Answer:
2) -2/3
4) 17/5
Step-by-step explanation:
2)-4/3= 2g
-4=6g
g=-2/3
4) 9=5r - 8
-5r=-17
r=17/5
Answer:
g=-2/3, r=17/5, -15/14
Step-by-step explanation:
Multiply all terms by the same value to eliminate fraction denominators
2) -4/3=g/1/2
1/2(-4/3)= 1/2xg/1/2
Simplify
Multiply the numbers:
1/2(-4/3)=1/2xg/1/2
-2/3= 1/2xg/1/2
Cancel multiplied terms that are in the denominator
-2/3= 1/2xg/1/2 (cross out 1/2)
-2/3= g
Move the variable to the left
-2/3=g
g=-2/3
4)
Multiply the numbers
9/5=r-1x8.5
9/5=r-8/5
Add 8/5 to both sides of the equation
9/5=r-8/5
9/5+8/5=r-8/5+8/5
Add the numbers:
9/5+8/5=r-8/5+8/5
17/5=r
Move the variables to the left
17/5=r
r=17/5
6)
4/5z=-6/7
divide 4/5 5o each side
4/5zx5/4=-6/7x5/4
z=-30/28
(simplified= -15/14)
Your welcome ^^
If 4 out of 21 people prefer diet soda to regular soda, about how many regular sodas should be bought to serve 864 people, if each person
receives one soda?
~700 regular sodas to server 864 people
(the actual answer is 699.4285)
The number of regular sodas that should be bought will be 700 regular sodas.
If out of 21 people prefer diet soda to regular soda, then it means that 17 people prefer regular soda.
Since the number of people are 864 people, then the number of regular sodas that'll be bought will be:
= 17/21 × 864
= 699.42
= 700 Approximately
Therefore, the number of regular sodas that should be bought will be 700 regular sodas.
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SohCahToa PLEASE HELP!!!
I don’t understand this
Answer:
57.99 °
Step-by-step explanation:
\(tan( x ) = \frac{16}{10} \\ x = arctan( \frac{16}{10} ) \\ x = 57.99 \: degrees\)
Answer:
3) 57.99°
Step-by-step explanation:
16 is opposite of x° and 10 is adjacent to x°. Therefore, you use tangent because of SOHCAHTOA.
tan(x°)=opposite/adjacent
tan(x°)=16/10
tan⁻¹(tan(x°))=tan⁻¹(16/10)
x°=57.99461679°=58°
So the closest choice is 3) 57.99°
Options are 1,2,3,4
I need some help on this...
Step-by-step explanation:
Since ray GI bisects ∠FGH, we know that the ray is in the middle of the angle, since it is a bisector. That means that both angles have the same value. ∠FGI is equal to 51º. Since we know that both of the angles are the same value, that makes m∠IGH also equal to 51º. To find the angle of m∠FGH, we add both angles together to get our answer: 102º.
Answers:
m∠IGH = 51º
m∠FGH = 102º
In triangle ABC, m
hypotenuse: AB, BC, or CA?
Answer:
The hypotenuse is the side AB
Step-by-step explanation:
Right Triangles
Right triangles are identified because they have an internal angle of 90°. The longest side is the hypotenuse and the two smaller sides are called the legs.
The hypotenuse is always opposite to the right angle.
The image provided below shows a right triangle ABC, whose angle C is 90°. Thus, the hypotenuse is the side AB.
Fran and Jill made a new years resolution to ride bikes. Fran rode 40 miles last week
and plans to ride 55 miles per week. Jill rode 70 miles last week and plans to ride 45
miles per week. Predict the week in which Fran and Jill will have ridden the same
number of miles.
A.) 4 weeks
B.) 3 weeks
C.)They will never ride the same number
D.) 5 weeks
If Fran and Jill made a new years resolution to ride bikes. it will take 3 weeks for Fran and Jill to have ridden the same number of miles..
How to find the number of weeks?Let's assume that it takes "x" number of weeks for Fran and Jill to ride the same number of miles.
In the first week, Fran rides 40 miles, and Jill rides 70 miles.
In the "x"th week, Fran will have ridden a total of 40 + 55x miles.
In the "x"th week, Jill will have ridden a total of 70 + 45x miles.
For Fran and Jill to ride the same number of miles in "x" weeks, we need to solve the following equation:
40 + 55x = 70 + 45x
Simplifying this equation, we get:
10x = 30
x = 3
Therefore, it will take 3 weeks for Fran and Jill to have ridden the same number of miles.
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Enter your answer in the box. Round your final answer to the nearest degree. B 6cm, A 8cm, C
The measure of Angle C is approximately 26°.
A, B, C are vertices of a triangle, where AB = 8 cm, BC = 6 cm. To determine the measure of angle C, we need to use the cosine rule.
The cosine rule states that the square of one side of a triangle is equal to the sum of the squares of the other two sides minus twice the product of the other two sides and the cosine of the angle between them.
Mathematically, we can represent it as follows:a² = b² + c² - 2bc cos(A)where a is the side opposite to angle A, b is the side opposite to angle B, c is the side opposite to angle C.
In this case, we have AB = c = 8 cm, BC = a = 6 cm, and AC = b. We need to find the measure of angle C, which is represented as cos(C).
Using the cosine rule, we can write the equation as follows:$$\begin{aligned} b^2 &= c^2 + a^2 - 2ca\cos(C) \\ \Right arrow b^2 &= 8^2 + 6^2 - 2 \times 8 \times 6 \cos(C) \\ \Right arrow b^2 &= 64 + 36 - 96 \cos(C) \\ \Right arrow b^2 &= 100 - 96 \cos(C) \end{aligned}$$We know that b is a positive length. Hence, b² > 0 or 100 - 96 cos(C) > 0. Solving for cos(C),
we get: cos(C) < 100/96cos(C) < 1.0417Using a calculator, we can determine the inverse cosine of 1.0417 as:cos⁻¹(1.0417) = 0.4569 radians = 26.201° (rounded to the nearest degree)
Therefore, the measure of angle C is approximately 26°.
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Muka saved 476.60. He gave Kelvin 429.10 and bought T-Shirt for 432.05, how much money he has left over
Lindsey went to best buy and bought an MP3 Player. If the MP3 Player costs $78.99 and the sales tax was 6.5%, what was her total bill?
Answer:
$84.12
Step-by-step explanation:
78.99 x 0.065 = 5.13
78.99 + 5.13 = 84.12
Hello!! I need help calculating the coordinates where these lines overlap. I have the answers, but I don't understand how to get there. I'm hoping you can show me your work! :)
Here's the first two:
\(-\left[\frac{2\left(x-400\right)^{2}}{800}-\frac{3\left(y-340\right)^{2}}{900}\right]=1\)
\(\frac{.08\left(x-380\right)^{2}}{10^{2}}-\frac{22\left(y-300\right)^{2}}{500^{2}}=1\)
the coordinate answers for this one should be (415.85, 317.9)
The second two are:
\(y=.3\left(x-230\right)^{2}+30\)
\(\frac{11\left(x-220\right)^{2}}{60^{2}}+\frac{11\left(y-40\right)^{2}}{30^{2}}=1\)
which should have a coordinate answer of (222.044, 48.987)
Thanks so much for your hard work!!!
Answer:
A common fraction is a fraction whose denominator is the same with another fraction.
$$$\sqrt{x} \div\sqrt{y}$$ as a common fraction is \sqrt \frac{x}{y}}
The expression is given as:
$$$\sqrt{x} \div\sqrt{y}$$
Express as fraction
$$$\sqrt{x} \div\sqrt{y} = \frac{\sqrt x}{\sqrt y}$$
Rewrite as a common fraction
$$$\sqrt{x} \div\sqrt{y} = \sqrt \frac{x}{y}}$$
Hence, $$$\sqrt{x} \div\sqrt{y}$$ as a common fraction is \sqrt \frac{x}{y}}
Answer:
Ask your teacher. sorry, this is so hard
A scientist has two solutions what she has labeled solution a and solution b each contains salt she knows that solution a is 60% salt and solution b is 85% salt she wants to obtain 70 ounces of a mixture that is 80% salt how many ounces of each solution should she use
Solving a system of equations we can see that:
She needs to use 56 oz of the 85% solution.She needs to use 14 oz of the 60% solution.How many ounces of each solution should she use?We can use the variables:
x = mass of the 60% solution.
y = mass of the 85% solution.
We can write a system of equations.
x + y = 70
x*0.6 + y*0.85 = 70*0.8
We can isolate x on the first equation to get:
x = 70 - y
Replace that in the other one:
(70 - y)*0.6 + y*0.85 = 70*0.8
Now we can solve this for y.
y*0.25 = 70*0.8 - 70*0.6
y = 14/0.25 = 56
Then he needs to use 56 ounces of the 85% solution, and 14 ounces of the 60% solution.
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Please can anybody help me with this? A card is randomly selected from a standard 52-card deck. What is the probability of picking a club OR a face card? Answer needs to be in decimal form rounded to two decimal places.
Answer:
0.42
Step-by-step explanation:
To solve the problem, we need to add the probability of picking a club to the probability of picking a face card, and then subtract the probability of picking a club that is also a face card (because we would have counted it twice).
There are 13 clubs in a standard deck, so the probability of picking a club is 13/52 or 0.25.
There are 12 face cards (4 jacks, 4 queens, and 4 kings) in a standard deck, so the probability of picking a face card is 12/52 or 0.23.
However, there are 3 cards that are both clubs and face cards (the jack of clubs, queen of clubs, and king of clubs), so we need to subtract the probability of picking one of those cards. There are 3 of them out of 52 total cards, so the probability of picking a club that is also a face card is 3/52 or 0.06.
Therefore, the probability of picking a club OR a face card is:
0.25 + 0.23 - 0.06 = 0.42 (rounded to two decimal places).
So the answer is 0.42.
The ratio of 70 minutes to 2 hours is
Hey there!
70 minutes
= 1 hour 10 minutes
2 hours
= 60 minutes * 2 minutes
= 60 minutes + 60 minutes
= 120 minutes
70/120
= 70 ÷ 10 / 120 ÷ 10
= 7 / 12
Therefore, your answer is: 7:12 OR 7/12
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)
Please help me with this question
The values of tht missing part of the triangle are;
A= 20.9°
a = 13.06
c = 33.6
What is sine rule?The sine rule states that if a, b and c are the lengths of the sides of a triangle, and A, B and C are the angles in the triangle; with A opposite a, etc., then a/sinA=b/sinB=c/sinC.
To find side c
sinB/b = sinC/c
sin45.9/26.30 = sin113.2/c
csin 45.9 = 26.30 × sin113.2
0.718c = 23.90
c = 23.90/0.718
c = 33.6
Angle A = 180-(113.2+ 45.9)
angle A = 20.9°
sinA/a = sinB/b
sin20.9/a = 0.718/26.30
0.357 × 26.30 = 0.718a
a = 9.389/0.718
a = 13.06
Therefore A = 20.9°
a = 13.06
c = 33.6
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Gabrielle is 12 years younger than Mikhail. The sum of their ages is 76 . What is Mikhail's age?
Answer:
48 years old
Step-by-step explanation:
Let x = Mikhail's age
then x-15 = Gabrielle's age
x + x-15 = 81
2x-15 = 81
2x = 96
x = 48 years old
Answer:
44
Step-by-step explanation:
x+(x-12)=76
2x-12=76
2x=76+12
2x=88
x=88/2
x=44
I am an even 2-digit number between 40 and 90 that is divisible by 3 and 7, but not divisible by 10
Answer:
42
Step-by-step explanation:
3×14=42
7×6=42
42÷2=21
Please correct me if I'm wrong:)
An even 2-digit number between 40 and 90 that is divisible by 3 and 7, but not divisible by 10 is, 42
What is Division method?Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications. For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.
Given that;
An even 2-digit number between 40 and 90 that is divisible by 3 and 7, but not divisible by 10.
Now, Let 2 - digit even number between 40 and 90 are,
⇒ 42, 44, 46, 68, 50, 52, ... 88
Clearly, The number 42 is an even 2-digit number between 40 and 90 that is divisible by 3 and 7, but not divisible by 10.
Thus, An even 2-digit number between 40 and 90 that is divisible by 3 and 7, but not divisible by 10 is, 42.
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1
1 point
mZABD = 79
D
C
V
(5x + 4)
(8x - 3)
В B.
A
x= type your answer...
2
1 point
Answer:
x = 6
Step-by-step explanation:
∠ DBC + ∠ ABC = ∠ ABD , substitute values
5x - 4 + 8x - 3 = 79
13x + 1 = 79 ( subtract 1 from both sides )
13x = 78 ( divide both sides by 13 )
x = 6
Find the value of x so that the line passing through (-3,7) and(x,5) has a slope of -4
Answer:
x= -5/2 or -5.2
Step-by-step explanation:
you know the equation: y=mx+b, so we can substitute the -3 for x, the 7 for y and the -4 for m:
7=-4(-3)+b
now solve:
7=12+b
subtract 12 on both sides:
b=-5
now what you want to do is substitute it in and solve for x:
y=-4x-5
so:
5=-4x-5,
solve:
10=-4x
x=-5/2!!!!!!!!!!!!!!
hope this helped :)
A Hummer gets 300 miles on 20 gallons of gas, how many miles can it be driven on 50 gallons of gas?
Answer:
750 miles
Step-by-step explanation:
Step one:
Given data
we are told that the hummer gets to 300miles on 20 gallons of gas
Required
The distance that the Hummer can go on 50 gallons of gas
Step two:
if 20 gallons gets to 300miles
the 50 gallons will get to x miles
cross multiply we have
\(x= 50*300/20\\\\x=15000/20\\\\x=750 miles\)
Question in the pic, please explain your answer
The statement translated to an algebra equation will give the value of the unknown number w = 11/5
What is algebra?Algebra is the branch of mathematics that helps to represent problems or values in the form of mathematical expressions using letters to represent unknown values.
Let us represent the unknown number with the letter w so that the statement can be written as the equation:
5w - 8 = 3
add 8 to both sides
5w - 8 + 8 = 3 + 8
5w = 11
divide through by 5
5w/5 = 11/5
w = 11/5
Therefore, the statement translated to an algebra equation will give the value of the unknown number w = 11/5
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30 POINTS // An investment portfolio is shown below. Investment Amount Invested ROR Savings Account $8,400 3.6% Municipal Bond $3,200 1.8% Preferred Stock $5,625 13.6% Common Stock A $575 −1.2% Using technology, calculate the weighted dollar amount of the savings account. $225.67 $284.90 $302.40 $394.40
Answer:
$302.40
Step-by-step explanation:
Answer:
284.90 or 285
Step-by-step explanation:
you would multiply the savings account by the ROR.
savings: $8,400
ROR: 3.4%
8,400 x 3.4% = 285 (which is 284.90 rounded)
Hank and his partner are writing a 20 page history report. They complete 25% of the report in class and 50% of the remaining pages afterschool. How many pages do hank and his partner still have to write?
The number of pages that Hank and his partner still have to write is 7.5 pages.
How to calculate the value?Given that Hank and his partner are writing a 20 page history report and they complete 25% of the report in class, the pages remaining will be:
= 20 - (25% × 20)
= 20 - 5
= 15 pages.
Then they complete 50% of the remaining pages afterschool, the pages left will be:
= 15 - (50% × 15)
= 15 - 7.5
= 7.5
They've 7.5 pages left.
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The base of an isosceles triangle is 24 inches and one of the base angles is 53o. Find to the nearest inch the altitude drawn to the base. Hint: Draw the right triangle as it is described on the problem. 1. Describe your reasoning and the steps you will take into finding the answer to the problem. 2. Find the answer to the problem.
Answer:
16 Inches
Step-by-step explanation:
An Isosceles Triangle has two equal sides. A line drawn from the altitude to the base (where the base is the third unequal side) divides the base into two equal parts.
Therefore, the right triangle formed by this problem is a right triangle with a base of 12 inches. We are required to calculate the height, h of the right triangle.
(b)Using Trigonometric ratios
\(\tan 53^\circ =\dfrac{h}{12}\\ $Cross multiply\\h=12 \times \tan 53^\circ\\h=15.9 \approx 16$ Inches\)
Helpp please with all four questions
Answer:
Picture 1:
Area of cemicircle 2 π = 6.28 sq.m (approximately)
Total area of figure = 24+6.28= 30.28 sq.m (approximately)
Picture 2:
area of rectangle = 256 sq.m
Area of triangle = 32 sq.m
Total area of figure = 288 sq.m
Picture 3:
Area of top rectangle = 2 sq ft
Area of bottom rectangle = 15 sq ft
Total area of figure = 17 sq ft
Picture 4:
Area of rectangle = 28 sq ft
Area of triangle = 6 sq ft
Area of shaded region = 22 sq ft
Evaluate:
-7 - (-8) + (-3) + 6 - 2
A) -2
B) 0
C) 1
D) 2
Answer:
D) 2
Step-by-step explanation:
Estimate: 23.41 ÷ 3.1
Answer:
The answer is 8
The estimated answer is eight. Here‘s what I did. First, I rounded twenty three and forty-one hundredths to twenty-three. Then I rounded three and one-tenths to three.
I couldn’t quickly find an answer to twenty-three divided by three. So, I used compatible numbers, twenty-four divided by three… which equals eight.
A bird bath holds 4 liters of water. How
many milliliters of water does it hold?
Answer:
4,000
Step-by-step explanation:
If there is 4 liters and 1,000 milliliters is in each liter then the answer would be 4,000. As for this you just do 1,000 x 4 because there is 4 liters.
Answer:
4000 ml
Step-by-step explanation:
D. If the scale factor for the dilation of the figure is 0.9, then the dilation is an enlargement
Answer:
Option C.
Step-by-step explanation:
Suppose that we have a point (x, y)
If we do a dilation with a center in the origin of scale factor K, then the new coordinates of our point will be:
(k*x, k*y)
If k > 1, we have an elargement.
if 0 < k < 1, we have the opposite case.
Now, suppose that one random vertex of the preimage is A (a, b)
Then after we do the dilation, the new coordinate of this vertex will be:
A' = (k*a, k*b) (this is, the original coordinates multiplied by the scale factor)
And this will happen for all points actually, so particularly the corresponding coordinates of the vertices of the image are the vertices of the preimage multiplied by the scale factor.
Then the correct option is C
Kayla and her children went into a restaurant and she bought $63 worth of hotdogs
and tacos. Each hotdog costs $3.50 and each taco costs $4. She bought 3 more
hotdogs than tacos. Write a system of equations that could be used to determine the
number of hotdogs and the number of tacos that Kayla bought. Define the variables
that you use to write the whats the system of equation.
Answer:
x= hotdogs
y=tacos
Step-by-step explanation:
(3.50)x+ 3x + 4y= 63
A test was given to a group of students. The grades and gender are summarized below
A B C Total
Male 3 10 12 25
Female 14 2 13 29
Total 17 12 25 54
If one student is chosen at random from those who took the test,
Find the probability that the student got a 'A' GIVEN they are male.
The probability that the student got an 'A' given they are male is approximately 0.12 or 12%.
To find the probability that a student got an 'A' given they are male, we need to use Bayes' theorem:
P(A | Male) = P(Male | A) × P(A) / P(Male)
We can find the values of the terms in the formula using the information given in the table:
P(Male) = (25/54) = 0.46 (the proportion of all students who are male)
P(A) = (17/54) = 0.31 (the proportion of all students who got an 'A')
P(Male | A) = (3/17) = 0.18 (the proportion of all students who are male and got an 'A')
Therefore, plugging these values into the formula:
P(A | Male) = 0.18 × 0.31 / 0.46
P(A | Male) ≈ 0.12
So the probability that the student got an 'A' given they are male is approximately 0.12 or 12%.
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