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Related Questions
Two brothers went shopping at a back to school sale where all shirts and shorts were the same price. The younger brother spent $145 on 7 new shirts and 7 pairs of shorts. The older brother purchased 6 new shirts and and 7 pairs of shorts and paid a total of $125 How much did one shirt cost?
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(−7.4 )+ L = 9.11
What is L ?
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L = 16.51
Get variable onto one side of equation and simplify:
(−7.4 )+ L = 9.11
L = 9.11 + 7.4
L = 16.51
Answer:
L=16.51
Step-by-step explanation:
-7.4 +L=9.11 remove unnecessary ( )
L=9.11 +7.4 move constant (7.4) to the right change sign
L=16.51 add the numbers
For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 37 beats per minute, the mean of the listed pulse rates is x=71.0 beats per minute, and their standard deviation is s=18.2 beats per minute. a. What is the difference between the pulse rate of 37 beats per minute and the mean pulse rate of the females? b. How many standard deviations is that [the difference found in part (a)]? c. Convert the pulse rate of 37 beats per minutes to a z score. d. If we consider pulse rates that convert to z scores between −2 and 2 to be neither significantly low nor significantly high, is the pulse rate of 37 beats per minute significant?
Answers
Answer:
See below.
Step-by-step explanation:
(a) Difference = 71 - 37 = 34 beats/minute.
(b) Number of standard deviations = 34 /18.2 = 1.868.
(c) z score = (x - m )/ s where m = mean and s = standard deviation
= (37 - 71) / 18.2 = -1.868.
(d) This z score lies between -2 and 2 so a pulse rate of 37 is not significant.
The mean of 20 observations is 12.5. By error, one observation was noted as (-15) instead of 15. Then the correct mean is ___?
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Answer:
The correct mean is -12.5.
Step by step explanation:
If one of the 20 observations is a negative number, then the mean would be negative. This is because, when a negative number is in contact with (meaning added, subtracted, multiplied by) a positive number, the whole answer is negative, because it's opposite signs.
Hope this helps! :D
PLS HELP ME!!!!!! !!!!!!!!!!!!!”
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its D
Solution:
[tex] \sqrt{60 } = \sqrt{4 \times 15} = \sqrt{4 } \times \sqrt{15} = 2 \sqrt{15 \: } \: ans[/tex]match the expression to it simplified form
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Answer:
I'd love to help but it seems you have not added an attachment or maybe the rest of the question..
Step-by-step explanation:
A performing arts theater offers a group rate om season passes of $70 total for the first two passes plus $25 for each additional pass. what is the cost of 8 season passes at the group rate?
Answers
Answer:
$220.00
Step-by-step explanation:
$70 dollars for 2
$25x6
$70+$150=$220.00
what u what to get for Christmas?
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Answer:
Robux and a Ps5
best estimate for 6,193 ÷ 48 using compatible numbers.
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Answer:
1)100
2)120
3)130
Step-by-step explanation:
I think these three are correct but I am not sure so sorry guyz.
Help! Find the value of x.
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Answer:
30 degrees
Step-by-step explanation:
the sum of a triangles angles needs to be 180 and since its an equilateral, all angles are the same so if each angle is 60 degrees do
60 / 2 = x
x = 30
Answer:
9
Step-by-step explanation:
You add all of the side numbers together. Think this way, area you add because area starts with an A. Hope it helps.
Which linear equation represents a non-proportional relationship?
A)
y = 1.5%
B)
y = x + 3
ya
D)
y=-3x
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Answer:
Is there an option C?
in this previous problom,ken predicted a drop in temperture would lead to adding a negitive integer
Answers
Answer:
WOAH COOL
Step-by-step explanation:
How are opposite angles of a quadrilateral related? (Select all that apply.)
A. Equal
B. Supplementary
C. Unknown
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Answer:
B. Supplementary
Step-by-step explanation:
Daniel needs to bake cookies for a bake sale. Each cookie will cost dollars. Brandon makes 12 chocolate chip cookies and 18 sugar cookies. Create an expression that represents Taylor's total cost of the cupcakes.
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Answer:
An expression that represents Taylor's total cost of the cupcakes is written as:
y = 30x
Step-by-step explanation:
We are told in the question:
Brandon makes 12 chocolate chip cookies and 18 sugar cookies.
Let us represent the total cost of cookies as y
The price of each cookies as x
Therefore,an expression that represents Taylor's total cost of the cupcakes is written as:
y = 12x + 18x
y = 30x
what’s the mean (average) for the data 12 4 16 20
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Answer:
13
Step-by-step explanation:
Add all of the numbers, and divide by the amount of numbers. In this instance, all four added together numbers is 52, and divided by 4 is 13. Hope this helps!
Answer:
The answer is 13.
Step-by-step explanation: In order to find the average in a set of numbers, you must add all numbers and divide them by the numbers of numbers which you have added.
For example for your problem, I added 12 + 4 +16 +20 and I got 52. Then count the numbers which u have added. There are 4 numbers I have added. Then divide that number by the total. So it would be 52/4 and once you divide, you have your answer!
Hope this helps!
The three sides of a triangle are in different colors – blue, green and red. The ratio of the length of the blue side to the length of the green side to the length of the red side is 3 : 4 : 5. The perimeter of the triangle is 240 cm. a) Fill in the blank: ___ units = 240 cm b) Fill in the blank: 1 unit = ___ cm c) What is the length of the red side of the triangle?
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Answer:
The perimeter is the distance around the triangle. Given the ratio, the perimeter using the ratio is;
= 3 + 4 + 5
= 12 units
a. 12 units = 240 cm
The perimeter in centimetres is 240cm and in ratio is 12 units so they are equivalent.
b. 1 unit = 20 cm
If 12 units are to 240 cm, 1 unit is;
= 240/12
= 20 cm
c. Length of red side;
Red side has length of 5 units. 1 unit is 20 cm.
Length in cm is;
= 5 * 20
= 100 cm
Simplify, if x = 2 and y = -1: 3(y + 2)^2 + 3x
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Answer:
9
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightStep-by-step explanation:
Step 1: Define
3(y + 2)² + 3x
x = 2
y = -1
Step 2: Evaluate
Substitute: 3(-1 + 2)² + 3(2)Add: 3(1)² + 3(2)Exponents: 3(1) + 3(2)Multiply: 3 + 6Add: 9If 66 oranges cost $15, how many oranges can be purchased for $5?
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Answer:
22 oranges
Step-by-step explanation:
$15 --- 66 oranges
$5 --- [tex]\frac{5}{15}[/tex] × 66 oranges = 22 oranges
What is the solution set of the compound inequality
x + 1 < -2x + 11 < 3 x + 5?
Answer choices:
6/5 < x < 10/3
-1/3 < x < 2
No solution
-2 < x < 10/3
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Answer:6/5<x<.10/3
Step-by-step explanation:
Which type of reaction is C12H22O11 → 12C + 11H2O? synthesis decomposition oxidation combustion
Answers
Answer:
The correct answer would be B) Decomposition
Step-by-step explanation:
Edge Cumulative Exam 2022
The type of reaction is Decomposition reaction.
What is Decomposition reaction?A decomposition reaction occurs when one reactant breaks down into two or more products. This can be represented by the general equation:
AB → A + B.
Examples of decomposition reactions include the breakdown of hydrogen peroxide to water and oxygen, and the breakdown of water to hydrogen and oxygen.
Given reaction:
[tex]C_{12}H_{22}O_{11}[/tex] → 12C + 11[tex]H_{2}O[/tex]
(Sucrose)
Here [tex]C_{12}H_{22}O_{11}[/tex] has been decomposed or break into C and 11[tex]H_{2}O[/tex]molecule.
Hence, the given reaction is decomposition reaction.
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68, 302 divided by 1,000 equals what?
Answers
Answer:
68.302
Step-by-step explanation:
Answer: 68.302
Step-by-step explanation:
Do long division it helps best
Solve the following equation for D. Be sure to take into account whether a letter is capitalized or not. fD - 7 = q^2
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Answer:
[tex]\displaystyle D=\frac{q^2+7}{f}[/tex]
Step-by-step explanation:
Equation Solving
We are given the equation:
[tex]fD - 7 = q^2[/tex]
It's required to solve the equation for D. All letters must preserve their capitalization.
We must isolate the letter D by removing from the left side all the terms and coefficients that surround it.
Adding 7:
[tex]fD = q^2+7[/tex]
Dividing by f:
[tex]\mathbf{\displaystyle D=\frac{q^2+7}{f}}[/tex]
Explain what the differences between an arithmetic and geometric sequence are? IN FULL SENTENCES. *
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Answer:
An arithmetic sequence has a constant difference between each term. ... A geometric sequence has a constant ratio (multiplier) between each term. An example is: 2,4,8,16,32,… So to find the next term in the sequence we would multiply the previous term by 2.
Step-by-step explanation:
pls make me brainliest
What percent of 65 is 13?
Answers
Answer:
Convert the fraction to a decimal, then multiply by
100 .20%
Step-by-step explanation:
∠A and \angle B∠B are supplementary angles. If m\angle A=(7x+10)^{\circ}∠A=(7x+10) ∘ and m\angle B=(7x-26)^{\circ}∠B=(7x−26) ∘ , then find the measure of \angle A∠A.
Answers
Answer:
108 degrees
Step-by-step explanation:
Since angles A and B are supplementary, they both add up to 180. Angle A = 7x+10, and angle B = 7x-26. You can set up the equation A + B = 180, and then plug in angles A and B, which gives you 7x+10 + 7x-26 = 180. Then you just need to isolate x:
Combine like terms: 14x - 16 = 180
Add 16 to both sides: 14x = 196
Divide both sides by 14: x = 14
Now that you know x, you can plug it into the expression for angle A (7x+10):
A = 7(14) + 10 = 98+10 = 108
The equation 6x = 3y -12 is linear
True or False
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Answer:
True :D .....................
If a line has a slope of -3/8, what is the slope of any line perpendicular to that line?
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Answer:
The slope of they line is 8/3 = 4
Step-by-step explanation:
When two lines are perpendicular, the product of the slope of the lines is -1
Thus, we have that;
-3/8 * m = -1
3m/8 = 1
3m = 8
m = 8/3
The table below shows that the number of miles driven by Taylor is directly proportional to the number of gallons she used.
Gallons Used /Miles Driven
42 1125.6
48 1286.4
50 1340
What is the constant of proportionality between the number of miles driven and the number of gallons used?
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Answer:
24.3
Step-by-step explanation:
[tex]\frac{Gallons}{Miles} =\frac{Gallons}{Miles}[/tex]
[tex]\frac{g}{884.52} =\frac{22113}{910}[/tex]
910g = 25 x 884.52
[tex]\frac{910g}{910} =\frac{22113}{910}[/tex]
g = 24.3
This is the correct answer. Hoped this helped!
The constant of proportionality is 26.8
Calculating the number of miles driven per gallon of fuel used:
1125.6/42 = 26.8
1286.4/48 = 26.8
1340/50 = 26.8
we get 26.8 miles traveled in one gallon fuel.
if we represent gallons of fuel by x and miles traveled by y, the equation thus formed will be:
y = 26.8x
hence the constant of proportionality is 26.8
Learn more about constant of proportionality:
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4. State what additional information is required in order to know that the triangles are congruent by the SSS Triangle Congruence Postulate
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The additional information required to prove the SSS Triangle Congruence Postulate is BC = KC
How to state the additional information required?The congruence postulate is given as:
SSS Triangle Congruence Postulate
The above means that the three sides of the triangles are congruent.
From the figure, the following side lengths are said to be congruent
AK and AB
AC and AC
For the congruence postulate of the triangle to be SSS Triangle Congruence Postulate, then the third corresponding sides must be congruent
This is represented as:
BC = KC
Hence, the additional information required to prove the SSS Triangle Congruence Postulate is BC = KC
Read more about Congruence Postulate at
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The LCM of 4, 9, and 10 is _______.
36
180
40
90
Answers
Answer:
180
Step-by-step explanation:
Multiples of 4:
4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144, 148, 152, 156, 160, 164, 168, 172, 176, 180, 184, 188
Multiples of 9:
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108, 117, 126, 135, 144, 153, 162, 171, 180, 189, 198
Multiples of 10:
10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200
Stay safe and Merry Christmas! :)
Answer:
the answer is 180
Step-by-step explanation: