If the number of papers is 56, the ratio of the total height in millimeters of 2 mm thick paper to the total height in millimeters of 23 mm thick paper is 2:23.
What is the ratio?The ratio is the relative size of two comparable quantities, values, or numbers.
Ratios are computed as the quotients of one value (the numerator) and another (the denominator).
We can depict ratios as decimals, fractions, percentages, or in their standard forms (:).
The total height in millimeters of 2 mm thick paper = 112 mm (56 x 2)
The total height in millimeters of 23 mm thick papers = 1,288 mm (56 x 23)
Ratio = 0.0869 (112 ÷ 1,288) or 2/23 or 8.69%.
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You pay 6% sales tax on a $250 purchase. How much was the tax?
Answer:
15
Step-by-step explanation:
To find the tax multiply the cost of the item by 6%
250 * 6%
Change to decimal form
250 *.06
15
Answer:
15
Step-by-step explanation:
convert the percentage to a decimal
6/100 = 0.06
then times by the number you given
6% x 250
Yessenia simplified an expression as shown below:
Answer:
Step 1
Step-by-step explanation:
Yessenia should have distributed 3 to (x+4) as her first step.
her steps should have been as follows:
x+6+3(x+4)
x+6+3x+12
re write: x+3x+6+12
4x+18
The Z-score is based on the concept of the normal distribution, the fact that we can expect 95% of the values in the distribution to be between 2 standard deviations below the average and 2 standard deviations above the average. Say the average weight of a 4 year old girl is 15 kilograms and the standard deviation is 3 kilograms.
What is true of the following weights:
12 kilograms
a) maybe not healthy
b) definitely not healthy
c) in perfect health
d) We can say nothing based on this
Answer:
C.) In perfect health.
Step-by-step explanation:
Given an average weight of 15kg and a standard deviation of 3kg for children of 4 years. Since the weight is based on a normal Z - distribution of 95% which is mean ± 2(standard deviations)
Mean weight interval is :
15 - 2(3) ; 15 + 2(3)
(9 ; 21) ; this weight interval could be interpreted to mean the normal or perfect weight value.
Therefore, given that the child weighs 12kg
Since, 12 kg falls within in the interval, we can conclude that the child is in perfect health.
What is the length of x?
Answer:
25
Step-by-step explanation:
a2+b2=c2
3^2+4^2=c^2
9+16=25
25^2=625
Sqrt of 625 = 25
Answer:
x = 5
Step-by-step explanation:
Using Pythagoras' identity in the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
x² = 4² + 3² = 16 + 9 = 25 ( take the square root of both sides )
x = \(\sqrt{25}\) = 5
Given circle E with diameter CD and radius EA. AB is tangent to E at A. If AB=34 and EB=38, solve for EA. Round to the nearest tenth if necessary
The value of side EA is,
EA = 16.9
We have to given that;
Circle E with diameter CD and radius EA.
And, AB is tangent to E at A.
Here, AB = 34 and EB = 38
Hence, By using Pythagoras theorem we get;
AB² + AE² = EB²
34² + AE² = 38²
1156 + AE² = 1444
AE² = 1444 - 1156
AE² = 288
AE = √288
AE = 16.9
Thus, The value of side EA is,
EA = 16.9
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There is a line whose slope is 2 and whose slope is 2 and whose y- intercept is 8. What is its equation in slope-intercept form?
The temperature during a winter day was less than 8 degrees Fahrenheit. Digby wants to write an inequality for the temperature during the winter day. What constant should Digby use in the inequality?
Since we want the temperature to be less than 8 degrees Fahrenheit, 8 would be the constant that Digby should use in the inequality.
what is inequality ?
An inequality is a mathematical statement that compares two values or expressions using one of the inequality symbols: "<" (less than), ">" (greater than), "<=" (less than or equal to), ">=" (greater than or equal to), or "≠" (not equal to).
To write an inequality for the temperature during a winter day being less than 8 degrees Fahrenheit, we can use the inequality symbol "<" which means "less than."
So, the inequality would be:
Temperature < 8 degrees Fahrenheit
Therefore, Since we want the temperature to be less than 8 degrees Fahrenheit, 8 would be the constant that Digby should use in the inequality.
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reduce reduce 36% to its lowest term
Answer:
9/25
Step-by-step explanation:
36% = 36/100 = 18/50 = 9/25
Answer:
0.36 is the lowest term and what 36% becomes, simplified.
Step-by-step explanation:
Derek must choose a four digit PIN number. Each digit can be chosen from 0-9. How many different pins can Derek choose?
find the area of the circle which is circumscribed about the right triangle with legs 6 and 8
The area of the circle circumscribed about the right triangle with legs 6 and 8 is approximately 78.54 square units.
To find the area of the circle circumscribed about a right triangle, we can use the fact that the diameter of the circle is equal to the hypotenuse of the right triangle. In this case, the legs of the right triangle are given as 6 and 8.
Using the Pythagorean theorem, we can find the length of the hypotenuse:
\(c^2 = a^2 + b^2\)
where c is the length of the hypotenuse, and a and b are the lengths of the legs.
Substituting the values:
\(c^2 = 6^2 + 8^2\)
\(c^2 = 36 + 64\\ c^2 = 100\)
Taking the square root of both sides:
\(c = \sqrt{100} \\ c = 10\)
Therefore, the length of the hypotenuse is 10 units.
Since the diameter of the circumscribed circle is equal to the hypotenuse, the radius of the circle is half the length of the hypotenuse, which is 10/2 = 5 units.
Now we can calculate the area of the circle using the formula:
Area = π \(r^2\)
where r is the radius of the circle.
Area = π \(5^2\)
Area = π × 25
Area = 78.54 square units
Hence, the area of the circle circumscribed about the right triangle with legs 6 and 8 is approximately 78.54 square units.
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Use the diagram to solve. What is 135% of 280? Percent Total 100% 5% 5% 5% 5% 5% 5% 596 13596 245
Answer:
B. 378
Step-by-step explanation:
hope this helps
In the figure below, if the radius of circle o
is 10, what is the length of diagonal AC of
rectangle OABC?
Answer:
The length of AC is 10 units
Step-by-step explanation:
In the given circle O
∵ AOCB is a rectangle
∵ OB and AC are the diagonals of the rectangle AOCB
∵ Diagonals of the rectangle are equal in lengths
→ That means OB and AC are equal in lengths
∴ OB = AC
∵ O is the center of the circle
∵ B is a point on the circle
∴ OB is a radius of the circle O
∵ The radius of the circle is 10 units
∴ OB = 10 units
∵ OB = AC
∴ AC = 10 units
∴ The length of AC is 10 units
Solve the problem. (EASY! 10 Points)
Choose the correct option.
You estimate that the materials required for a certain job will cost $1200. Upon
completing the job, you find that the actual cost was only $1020. By what percentage is
the actual cost lower than the estimated cost?
●
factors such as lower material prices, more efficient use of resources, or unforeseen circumstances that reduced the overall cost of the job. the actual cost is lower than the estimated cost by approximately 15%.
What is the percentage is the actual cost?A 15% difference may seem significant, but it is not uncommon for actual costs to deviate from estimates, especially in complex projects where many variables can influence the final outcome.
The estimated cost is $1200, and the actual cost is $1020.
To find the percentage by which the actual cost is lower than the estimated cost, we need to calculate the difference between the two costs and express it as a percentage of the estimated cost:
Actual cost reduction = Estimated cost - Actual cost = \(1200 - $1020 = $180\)
Percentage reduction = (Actual cost reduction / Estimated cost) x 100% =
\(($180 / $1200) \times 100% \times 15%\)
Therefore, the actual cost is lower than the estimated cost by approximately 15%.
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Anne has an aquarium in the shape of a rectangular prism that measures 10 in. By 20 in. By 10 in. How many cubic inches of water can the aquarium hold?
Answer:
\(Volume = 2000\ in^3\)
Step-by-step explanation:
Given
Dimension: 10in by 20in by 10in
Required
Determine the capacity of the aquarium
This question implies that, we calculate the volume of the prism and this is calculated by multiplying the dimensions of the aquarium. i.e.
\(Volume = Length * Width * Height\)
Substitute values for the dimensions
\(Volume = 10 * 20 * 10\)
\(Volume = 2000\ in^3\)
Hence, the volume of the aquarium is 2000 cubic inches
A farmhouse shelters 10 animals. Some are pigs and some are chickens. Altogether there are 30 legs. How many of each animal are there?
Answer:
there are 5 pigs and 5 chickens
Step-by-step explanation:
Im not sure if this is the answer but 5 pigs each pig has 4 legs 5x4=20 and the 5 chickens have 2 legs 2x5+10 10+20+=30
Solve (x + 3)2 - 5 = 0 using the quadratic formula.
A) x= 3 + 15 , x= 3 - 15
OB) x= 3
C) x= -3
ODx= -3 + 15x= -3 - 15
Answer:
x=−3±√5
Decimal Form:
x=−0.76393202…,−5.23606797
So D would be your answer
Step-by-step explanation:
A concrete beam may fail either by shear (S) or flexure (F). Suppose that three failed beams are randomly selected and the type of failure is determined for each one. Let X = the number of beams among the three selected that failed by shear. List each outcome in the sample space for the original random experiment of selecting three failed beams and denoting the type of failure along with each outcome's associated value of x.
The probability of each outcome can be calculated using basic probability formulas, such as the multiplication rule and the addition rule is 1/2
Probability is the branch of mathematics that deals with the likelihood of events occurring. In this scenario, we are looking at the probability of a concrete beam failing by shear or flexure.
When three failed beams are randomly selected, the type of failure is determined for each one. We want to find the probability of each possible outcome, where X represents the number of beams among the three selected that failed by shear.
To list the outcomes in the sample space, we can use the following notation: S for shear failure and F for flexure failure. The possible outcomes are:
SSS, where all three beams failed by shear. In this case, X = 3.
SSF, where two beams failed by shear and one by flexure. In this case, X = 2.
SFS, where two beams failed by shear and one by flexure. In this case, X = 2.
FSS, where two beams failed by shear and one by flexure. In this case, X = 2.
SFF, where one beam failed by shear and two by flexure. In this case, X = 1.
FSF, where one beam failed by shear and two by flexure. In this case, X = 1.
FFS, where one beam failed by shear and two by flexure. In this case, X = 1.
FFF, where all three beams failed by flexure. In this case, X = 0.
Each outcome has a different value of X, which represents the number of beams that failed by shear.
Then the probability is calculated as,
=> 1/2
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dose anyone remember how to do this,please give a explanation
Answer:
the answer for 2 examples is in the picture
The average monthly income of three persons is rs. 3,600. If the income of the first is 1/5 of the combined income of the other two then his monthly income is
The monthly income of the first person is $600.
Given that, the average monthly income of three persons is RS 3,600.
The income of the first is 1/5 of the combined income of the other two.
Here, Let income of the first be A, let income of the second be B and let Income of the third be C.
A+B+C=3600 -----(i)
Income for the first person = 1/5(B+C) -----(ii)
Substitute equation (ii) in equation (i), we get
(B+C)/5 +B+C =3600
B+C+5B+5C=3600×5
6B+6C=18000
6(B+C)=18000
B+C=3000 ------(iii)
Substitute (iii) in equation (i), we get
A=$600
Therefore, the monthly income of the first person is $600.
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i got the right answer which is 13 but the correct answer but it’s supposed to be a negative. Why is it a negative and how can i do this problem differently?
Answer:
n = -13
Step-by-step explanation:
You were doing everything correct but one minor error
-13 - n = 0
you added 13 to both sides which is correct
-13 - n = 0
+13 +13
than you got, n = 13
but you forgot to bring diwn the negative sign with the n
-13 - n = 0
+13 +13
- n = 13 which is basically
-1n = 13
divided both sides by -1 to get n positive
-1n/-1 = 13/-1
Simplified, n = -13
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2.
Michelle searched through all 6 of her drawers and found ten
$5 bills. What is the total value of money does she have in $5
bills?
Answer:
$50
Step-by-step explanation:
Multiply 5 (the value of the bill) times 10 (the number of bills) and get $50. :)
the expression the quantity cosecant squared of theta minus 1 end quantity over cotangent of theta simplifies to which of the following?
Students were asked to simplify the expression using trigonometric identities:
A. student A is correct; student B was confused by the division
B. 3: cos²(θ)/(sin(θ)csc(θ)); 4: cos²(θ)
Trigonometric Identities are equality statements that hold true for all values of the variables in the equation and that use trigonometry functions.
There are several distinctive trigonometric identities that relate a triangle's side length and angle. Only the right-angle triangle is consistent with the trigonometric identities.
The six trigonometric ratios serve as the foundation for all trigonometric identities. Sine, cosine, tangent, cosecant, secant, and cotangent are some of their names.
Each student correctly made use of the trigonometric identities
cosec(θ) = 1/sin(θ)
1 -sin²(θ) = cos²(θ)
A.
Student A's work is correct.
Student B apparently got confused by the two denominators in Step 2, and incorrectly replaced them with their quotient instead of their product.
The transition from Step 2 can look like:
\(\frac{(\frac{1-sin^2\theta}{sin\theta} )}{cosec\theta} =\frac{1-sin^2\theta}{sin\theta} .\frac{1}{cosec\theta} =\frac{cos^2\theta}{(sin\theta)(cosec\theta)}\)
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Complete question:
Students were asked to simplify the expression the quantity cosecant theta minus sine theta end quantity over cosecant period Two students' work is given. (In image below)
Part A: Which student simplified the expression incorrectly? Explain the errors that were made or the formulas that were misused. (5 points)
Part B: Complete the student's solution correctly, beginning with the location of the error. (5 points)
HELP!!! NEED HELP! It is a very confusing lesson
What is the radius and diameter of the following circle?
Radius = cm
diameter= cm
The value of diameter and radius of circle is 7 cm and 3.5cm.
According to the statement
we have given that the a figure of circle and we have to find the radius and the diameter of the circle.
So, We know that the
The radius of a circle runs from its center to its edge, the diameter runs from edge to edge and cuts through the center.
Here from the figure it is clear that the
Diameter of circle = 7cm
and the radius of circle we have to find
So,
Radius of circle = Diameter /2
Substitute the values in it then
Radius of circle = 7cm /2
Radius of circle = 3.5 cm.
So, The value of diameter and radius of circle is 7 cm and 3.5cm.
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My age this year is multiple of 8. My age next year is a multiple of 7. How old am I?
8x + 1 = 7
y - x = 1
y = 1 + x
sub 1 + x in eqtn i
8x + 1 = 7 { 1 + x }
8x + 1 = 7 + 7x
8x - 7 = 7 - 1
x = 6
y - 6 = 1
y = 1 + 6
y = 7
So,
8x = 8 x 6 = 48
7y = 7 x 7 = 49
My present years is 48
Next year i will be 49
What is multiple?Multiple can be defined as a number that is the product of a given number and some other natural number. For example when we multiply 7 × 3=21 or 8×3 =24
Therefore my present age is 48 and next year will be 49
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A local dry-cleaning company bought new equipment and its estimated useful life is 4 years. Using the straight-line depreciation method, what is the rate of depreciation each year?
Answer:
$2,500 or 25%
Step-by-step explanation:
Let's use the same example:
Cost of Equipment = $10,000
Useful Life = 4 years
Depreciation Rate = (Annual Depreciation / Cost of Equipment) * 100
Annual Depreciation = Cost of Equipment / Useful Life
Annual Depreciation = $10,000 / 4 years
Annual Depreciation = $2,500
Depreciation Rate = ($2,500 / $10,000) * 100
Depreciation Rate = 0.25 * 100
Depreciation Rate = 25%
for the following exercises, identify the type of data that would be used to describe a response (quantitative discrete, quantitative continuous, or qualitative), and give an example of the data.
14. distance to the closest movie theater
16. number of competing computer spreadsheet software packages
Answer:
14: quantitative continuous
16: quantitative discrete
Step-by-step explanation:
Distance can be any non-negative real number, hence it is continuous.
The number of packages has to be a positive integer, hence is discrete.
Santiago's bill for lunch at a restaurant was $79.40. He left a 20% tip. What was the
amount of the tip?
Answer:
the tip was $15.88
Step-by-step explanation:
Answer:
79.40*.2 = $15.88
Step-by-step explanation:
Matthew makes brackets and necklaces he uses 34 beads for each bracket and 72 beads for each necklace he makes 2 more necklaces let b represent the brackets
The equation that models the information when Matthew makes brackets and necklaces will be 34b + 114n
How to illustrate the equation?It should be noted that from the information, we are told that Matthew makes brackets and necklaces he uses 34 beads for each bracket and 72 beads for each necklace he makes 2 more necklaces let b represent the brackets and n represent the necklace.
The equation that can be used to represent the situation will be:
= (34 × b) + (34 × 2 × n) + (72 - 34 × n)
= 34b + 68n + 38n
= 34b + 114n
Complete question:
Matthew makes brackets and necklaces he uses 34 beads for each bracket and 72 beads for each necklace he makes 2 more necklaces let b represent the brackets and n represent the necklace. Write the equation that represents the information.
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