HURRY UP PLEASE !!
5 x 2 - 21 = 39 ; Solve and what are the x-intercepts of this quadratic equation ?
Answers
Answer:
The x-interecepts are 5.6 and -1.4, approximately.Step-by-step explanation:
The given equation is
\(5x^{2} -21x=39\)
Where \(a=5\), \(b=-21\) and \(c=39\), let's use the quadratic formula
\(x_{1,2}=\frac{-b(+-)\sqrt{b^{2}-4ac } }{2a} =\frac{-(-21) (+-)\sqrt{(-21)^{2} -4(5)(-39)} }{2(5)}\\ x_{1,2}=\frac{21(+-)\sqrt{441+780} }{10}=\frac{21(+-35)}{10}\\x_{1}=\frac{21+35}{10}=\frac{56}{10} \approx 5.6\\ x_{2}=\frac{21-35}{10}=\frac{-14}{10} \approx -1.4\)
Therefore, the x-interecepts are 5.6 and -1.4, approximately.
Related Questions
Write the set of integers in order from least to greatest. 23, 14, -14, -5, 6, -2
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Answer:
-14,-5,-2,6,14,23
Let me know if this helped :)
⚠️SIMPLE QUESTION!⚠️ Write two ratios that are equivalent to 2:6.
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Answer:
4:12 6:18 :) I hope this is ok (I haven't done ratios in a while lol)
Please help, I don't have much to give but I'm really struggling to understand this.
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I still dont understand slope can someone help?
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\(m = slope\\(x1, y1) = coordinates of first point in the line\\(x2, y2) = coordinates of second point in the line\)
Answer:
I don’t know the answer but I can try to help.
Step-by-step explanation:
The slope is the measurement of the steepness of a line, so all you would have to do is find the steepness of the line on that graph.
I hoped this helped :)
On the graph here, the values of y show the amount of Jenny’s cell phone bills based on the values of x, the number of minutes she uses the phone. If Jenny’s bill was $30 last month, how many minutes did she use her cell phone?
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60 minutes
..........
Find the total volume of all the tanks combined
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Answer:
1.375 *10⁷
Step-by-step explanation:
1.35 * 10⁷ gallons = 13500000 gallons
Volume of new tank = 250,000 gallons
Total volume including new tank = 13500000 + 250000
= 13750000
= 1.375 *10⁷
Answer:
C) 1.375 × 10^7
Step-by-step explanation:
1.35 × 10^7 + 250,000 = 1.375 × 10^7
My third question, I could use some help with this. I dont understand why my answer isnt correct. <3
Answers
Answer and Step-by-step explanation:
First, lets write down the volume of an equilateral triangular prism.
The volume of a triangular prism is as follows:
\(V = \frac{1}{2} * b * h * l\)
Where:
b = base length (edge)
h = height
l = length.
\(V = \frac{1}{2} * 4*10*2\sqrt{3} = 40\sqrt{3} = 69.2820\)
#teamtrees #PAW (Plant And Water)
1.Is 4/5 equivalent to 32/45?
2.Is 7/8 equivalent to 28/32?
3.Is 1/10 equivalent to 30/100?
4.Is 6/8 equivalent to 24/32?
5.Is 5/8 equivalent to 30/70?
6.Is 2/3 equivalent to 24/100?
7.Is 2/10 equivalent to 30/60?
8.Is 1/5 equivalent to 20/100?
9.Is 5/6 equivalent to 20/30?
10.Is 3/4 equivalent to 45/70?
Answers
When comparing fractions, you can multiply or divide to find equivalent fractions.
Number 1: If I were to multiply 5 to 45, I would have to do the same to the numerator of the fraction. 45/5 = 9. So we know now that 5 times 9 equals 45. Lets do that to the numerator also. 4 times 9 equals 36 so 4/5 times nine is 32/45.
So yes, this would be equivalent.
Number 2: 7/8 times 4 equals 28/32
Yes, this would be equivalent.
Number 3: 10 times 10 is 100, 1 times ten is NOT 30.
No, this would not be equivalent.
Number 4: 8 times 4 equals 32, 6 times 4 equals 24.
Yes, this would be equivalent.
Number 5: 30/5 equals 6. 70/8 is NOT 6.
No, this would not be equivalent.
Number 6: 24/2 equals 12. 100/3 is not 12.
No, this would not be equivalent.
Number 7: 30/2 is 15. 60/10 is NOT 15.
No, this would not be equivalent.
Number 8: 20/1 equals 20. 100/5 is also 20.
Yes, this would be equivalent.
Number 9: 20/5 equals 4. 30/6 is not 4.
No, this would not be equivalent.
Number 10: 45/3 is 15, 70/4 is NOT 15.
No, this would not be equivalent.
Read more about equivalent fractions at:
https://brainly.com/question/18040047
Answer:
1.Is 4/5 equivalent to 32/45? - No
2.Is 7/8 equivalent to 28/32? - Yes
3.Is 1/10 equivalent to 30/100? - No
4.Is 6/8 equivalent to 24/32? - Yes
5.Is 5/8 equivalent to 30/70? - No
6.Is 2/3 equivalent to 24/100? - No
7.Is 2/10 equivalent to 30/60? - No
8.Is 1/5 equivalent to 20/100? - Yes
9.Is 5/6 equivalent to 20/30?
10.Is 3/4 equivalent to 45/70?
Step-by-step explanation:
Solve the problems. Write the complete proof in your paper homework and for online (only) respond to questions or statements (if any) that are parts of your proof or related to it.
Prove:
BC ∥ AD
Answers
Answer:
e
Step-by-step explanation:
e
Help I will give brainliest
Answers
Answer:
Step-by-step explanation:
C
explanation: it has a 3/10 chance to spin on it because there is 10 total sides and 3 sides you want it to land on
Round to the nearest ten, then estimate the product. 82 x 78 = ___
5,600
6,300
6,400
7,200 i just want to make sure i picked the right one, i want to get a 100% on my test
Answers
Answer:
The answer is 6,400 I hope you get a good grade
What is the product of a number and 15 plus 12, written as an algebraic expression?
Answers
Answer:
15x + 12
Step-by-step explanation:
Answer: hope this helps ♡
15x+12
how many different combinations can 5 dies add up to 24 in a table of outcome
Answers
Answer: 16,777,215
Step-by-step explanation: The number of combinations possible with 24 numbers is 16,777,215.
The number of combinations possible with 24 numbers is 16,777,215.
The telephone company offers two billing plans for local calls. Plan 1 charges $29 per month for unlimited calls and Plan 2 charges $19 per month plus $0.05 per call.
a. Use an inequality to find the number of monthly calls for which Plan 1 is more economical than Plan 2.
b. Explain the meaning of the answer to part a.
Answers
Answer:
Step-by-step explanation:
wouldn't you do 29 x 19=551+0.05=551.05
Answer:
The number of monthly calls for which Plan 1 is more economical than Plan 2 is 200 calls If more than 200 calls are made, the plan 1 charge will be more than plan 2. Let the number of charges per month be x If plan 2 charges $16 per month plus $0.04 per call, this is expressed as 0.04x + 16 Price that pan 1 charges = $24 If Plan 1 is more economical than Plan 2, this is expressed as:0.04x + 16 > 24 Subtract 16 from both sides:0.04x + 16 - 16 > 24 - 16 0.04x > 8 x = 6/0.04 x = 200 This shows that if more than 200 calls are made, the plan 1 charge will be more than plan 2.
Problem 1: Dwayne took his car to have the timing belt replaced. If the belt costs $150 and the mechanic charges $85 per hour for his labor, write an equation that relates Dwayne's total cost(t) to the number of hours (h) the mechanic works.
1. What is the beginning value or b or y-intercept?
2. What is the rate per hour or slope or m?
3. Put the two values in the equation y=mx+b
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2. m = 85
3. y = 85x + 150
Which one is a Linear Equation?
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Answer:
A = xy=15
Step-by-step explanation:
Roots at 1.333 and the y-axis intercepts at (0|4)
y=mx+b
1) what is the equation of a parabola with the given vertex and focus
vertex (1,6) focus (1,8)
2) A radio station has a broadcast area in the shape of a circle with the equation x^2+y^2=1296
find the intercepts of the graph.
state the radius in miles .
what is the area of the region in which ten broadcast from the station can be picked up?
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Answer:
Step-by-step explanation:
10
Identify the graph that represents the solution set to Inequality. Place the unused choices at the bottom.
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The inequalities (x≥-13)\ ,(x ≤25) ,(x < 85) ,(x > -65) ,( x > 180) in the graph.
What is inequality?The relation between two expressions that are not equal, employing a sign such as ≠ ‘not equal to’, > ‘greater than’, or < ‘less than’.
Here we have the different graphs which shows the inequality and the some inequaliies are not shown in the graph.
The inequality not shown in the graph are:-
(x≥-13)
(x ≤25)
(x < 85)
(x > -65) ,
( x > 180)
To know more about inequality follow
https://brainly.com/question/24372553
#SPJ1
12. Claire jogs no more than 20 miles per week. Which inequality represents the number of miles she jogs each week?
A. x > 20
B. x < 20
C. x ≥ 20
D. x ≤ 20
Answers
Explanation:
Reasoning :
6 ft 2 in. = _____ ft
Answers
Answer:
6.2 ft
Step-by-step explanation:
Answer:Do a quick conversion: 1 feet = 30.48 centimetres using the online calculator for metric conversions. Check the chart for more details.
Step-by-step explanation:
The diameter of a hat is 6.8 inches. What is the distance around the hat using π = 3.14? Round to the hundredths place.
2.17 inches
10.68 inches
21.35 inches
36.29 inches
Answers
d = 6.8 in
π (in this problem) = 3.14
Keep the formula in mind: C = 2πr
We have d, but no r. However, we know that r = 1/2d, or the radius is half the diameter.
Then again, it’s 2πr, or 2rπ, ORRRRR dπ.
So 6.8(3.14) = 21.352.
The choices only go in 2 decimal places so round.
Your answer is the 3rd choice: 21.35 in.
The required distance around the hat is approximately 21.35 inches. Option C is correct.
What is the circumference of the circle?To find the circumference of a circle, we use the formula C = πd, where C is the circumference, π is the mathematical constant pi (approximately equal to 3.14), and d is the diameter of the circle.
Here,
The distance around a circle is given by the formula circumference = π × diameter.
Substituting the given values, we get:
circumference = 3.14 × 6.8
circumference = 21.352
Rounding to the nearest hundredth, we get:
circumference ≈ 21.35 inches
Therefore, the distance around the hat is approximately 21.35 inches.
Learn more about circumference here:
https://brainly.com/question/28757341
#SPJ2
Based on the line plot shown below, which amount of cheese was ordered once?
A line plot titled
A.
1
pound
B.
1
1/4
pounds
C.
1/2
pound
D.
1
1/2
pounds
Answers
Answer:
Please provide an image of the line plot so your question can be answered.
Option (D) 1 1/2 pounds
I got this question once in a quiz.
Help me find the values of x
1. 2x+1=9
2. 4x+3=19
3. 3x-2=7
Answers
2.)x = 4
3.)x= 3
____________________________________________________
If there's addition, use subtraction to find the value.If there's subtraction, use addition to find the value.x(y) means to multiply x with y____________________________________________________
1. In the first problem, we need to subtract 1 from 9 since there is an addition:
9 – 1 = 8
Next, divide 8 by 2, and we get:
8 ÷ 2 = 4
This means that x = 4
Finally, check the answer by:
2(4) + 1 = 9
2. In the second problem, we need to subtract 3 from 19 since there is an addition:
19 – 3 = 16
Next, divide 16 by 4, and we get:
16 ÷ 4 = 4
This means that x = 4
Finally, check the answer by:
4(4) + 3 = 19
3. In the third problem, we need to add 2 with 7 since there is subtraction:
2 + 7 = 9
Next, divide 9 by 3, and we get:
9 ÷ 3 = 3
This means that x = 3
Finally, check the answer by:
3(3) – 2 = 7
Hope this helps :)
Which number is equivalent to 0.51 repeating
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What fraction is equal to 24/36?
Answers
Answer: 2/3
Step-by-step explanation:
The GCD of 24 and 36 is 12.
So divide each number by 12
12/2=2
36/2=3
2/3
Answer:
2 / 3
Step-by-step explanation:
You can simplify 24/36 to 2/3. That would make 2/3 equal to 24/36!
If you have any question please ask me! :)
Find the equation of a line in the slope-intercept form given the following information.
Answers
Answer:
Step-by-step explanation:
7x2=y
y=14
C = y int
M = slope
Sub values…
y=7x-2
1. What is the distance between the points (4,-7) and (-5,-7)?
A. 1 unit B. 3 units C. 7 units D. 9 units.
2. Fill in the blanks. Write the coordinates of two points that are the given distance from these points and horizontal/vertical:
2. 5 units from (-1,-2) ( ,-2 and ( ,-2)
3. 8 units from (2,4) (2, ) and (2, )
4. 3 units from (-7,-5) (-7, ) and (-7, )
5. 6 units from (4,-1) (4, ) and (4, )
6. 10 units from (-1,9) ( ,9) and ( ,9)
7. 7 units from (-3,2) ( ,2) and ( ,2)
Answers
Answer:D. 9 units 2. (-6,-
Step-by-step explanation:What is the distance between the points (4,-7) and (-5,-7)? A. 1 unit B. 3 units C. 7 units D. 9 units. 2. Fill in the blanks. Write the coordinates of two points that are the given distance from these points and horizontal/vertical: 2. 5 units from (-1,-2) ( ,-2 and ( ,-2) 3. 8 units from (2,4) (2, ) and (2, ) 4. 3 units from (-7,-5) (-7, ) and (-7, ) 5. 6 units from (4,-1) (4, ) and (4, ) 6. 10 units from (-1,9) ( ,9) and ( ,9) 7. 7 units from (-3,2) ( ,2) and ( ,2)
Answer:
1. D
Step-by-step explanation:
You can add the X coordinates together and you will get the length (sorry I can't answer the others ones I don't have enough time rn)
HELP LIKE RIGHT NOW PLEASE
The temperature in a greenhouse should be 67 degrees or higher. One morning, the heater stopped working. The temperature dropped 3 degrees before someone fixed the heater. The temperature was still at least 67 degrees when the heater started working again. How can you best describe the temperature in the greenhouse before the heater stopped working?
Answers
Answer:
Step-by-step explanation:
the best way to describe the temperature in the greenhouse before the heater stopped working is that it was " was atleast 73 degrees "
Explain the cosine rule and sine rule while also saying how to use it and provide examples (keep it in simple terms)
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Answer:
Sure, I'll explain the cosine rule and sine rule in simple terms:
The cosine rule (also known as the law of cosines) is used to find the length of a side or the measure of an angle in a triangle given the lengths of the other sides and the angle between those sides. It states that c^2 = a^2 + b^2 - 2ab cos(C), where c is the length of the side opposite angle C, and a and b are the lengths of the other two sides.
Here's an example of how to use the cosine
Suppose we have a triangle with sides a=6, b=8, and an angle between them c=45 degrees. We want to find the length of the remaining side of the triangle, side a.
Using the cosine rule:
a^2 = b^2 + c^2 - 2bc * cosA
where A is the angle opposite side a, we can plug in our values and solve for a:
a^2 = 8^2 + 6^2 - 2(8)(6) * cos(45)
a^2 = 64 + 36 - 96 * 0.707
a^2 = 10.56
a = sqrt(10.56)
a = 3.25 (rounded to two decimal places)
Therefore, the length of side a is approximately 3.25 units.
Answer:
Step-by-step explanation:
Pls, help! A standard number cube with the numbers 1 through 6 is rolled. Find the probability of rolling a number less than 3. Find the probability of not rolling a number less than 3.
1/3; 2/3
1/2; 1/2
5/6; 1/2
1/6; 5/6
Brainlist for positive attitude and correct answer :D
Answers
Answer: The correct answer is:
Probability of rolling a number less than 3: 2/6 or 1/3
Step-by-step explanation:
Explanation: Out of the six possible outcomes (numbers 1, 2, 3, 4, 5, 6), there are two outcomes that meet the condition of rolling a number less than 3, which are 1 and 2. Therefore, the probability of rolling a number less than 3 is 2 out of 6, which simplifies to 1/3.
Probability of not rolling a number less than 3: 4/6 or 2/3.
Explanation: To find the probability of not rolling a number less than 3, we consider the outcomes that are not favorable (i.e., rolling a 3, 4, 5, or 6). There are four such outcomes, so the probability of not rolling a number less than 3 is 4 out of 6, which simplifies to 2/3. :D