Mathematics Middle School

what is the value of y when: -5=y-7over 9

Answers

Answer 1

Answer:

y=-38

Step-by-step explanation:

Undo the things that are being done to the variable.

1: Multiply both sides by nine to undo division.

-45=y-7

2: Add 7 to both side to undo the subtraction.

-38=y

Thats your answer!

Answer 2

Answer:

the answer should be -38 which is option c.

Step-by-step explanation: To get the answer first of all try a number that could be -7 -7 which would be -14 dividing by 9 making the results to be -1.55 or -1.56. So using the same steps trying to find the other answers what is the value of y and if you want use the process of elimination choosing an answer to eliminate and a reason why to eliminate it making it to option c which is the correct answer so sorry if i answer late and please give brainliest to the other people that answer first.

Related Questions

Mike -(a boy) -and Kate -(a girl) -are -siblings. Mike- has -as -many -brothers -as -sisters. Kate -has -twice -as -many -brothers -as -sisters. How- many -girls,- counting- the- children- only -are -in -the -family? - Please answer!!
I will mark brainliest

Answers

Mike has 3 brothers and 3 sisters

Kate has 4 brothers and 2 sisters

all the girls in the family are 3

hope it helps...!!!!

Gas Tank- 11 in , 1.25 ft, 1.75 ft
The gas tank is 20% full. Use the current price of gas in your community to find the cost to fill the tank (1 gal = 231 in^3
Current price = 3.79

Answers

Answer:

$45.48

Step-by-step explanation:

Given that:

Gas tank are 11 inches, 1.25 feet and 1.75 feet.

The gas tank is 20% full. Use the current price of gas in your community to find the cost to fill the tank (1 gal = 231 in³)

Current price = 3.79

Solution:

Formula: Volume = LWH

While,

L = Length

W = Width

H = Height

Since we, know that

Gas tank are 11 inches, 1.25 feet and 1.75 feet.

We have to convert either to inches or feet.

Note that: 1 feet = 12 inches

I will convert feet to inches

Thus,

1.25 × 12 = 15

1.75 × 12 = 21

Since 11 is already in inches we don't have to change that.

Now from the formula: LWH

Therefore, we have:

V = 11 × 15 × 21

V = 3465

Now, from the given the gas tank is 20% full

Finding 20%:

3465 × 20 % = 693

Now subtract to find the other 80%

3465 - 693 = 2772

Since 1 gal = 231 in ³

2772/ 231 = 12

Now, 12 mulitply by the current price of gas given:

12 × 3.79 = 45.48

Hence, the cost to fill the tank is $45.48

Kavinsky

Answer:

$45.48

Step-by-step explanation:

Convert to inches

1.25 × 12 = 15

1.75 × 12 = 21

Since 11 is already in inches we don't have to change that.

Now from the formula: LWH

Therefore, we have:

V = 11 × 15 × 21

V = 3465

Now, from the given the gas tank is 20% full

Finding 20%:

3465 × 20 % = 693

Now subtract to find the other 80%

3465 - 693 = 2772

Since 1 gal = 231 in ³

2772/ 231 = 12

Now, 12 mulitply by the current price of gas given:

12 × 3.79 = 45.48

Hence, the cost to fill the tank is $45.48

What is a fraction?? don’t copy from googl
pls give a good explanation

Answers

Answer:A fraction represents a part of a whole

Step-by-step explanation:

eg: 3/5 by 5/5

Answer ↓

please view explanation

Calculations ↓

The definition of a fraction is a part of a whole .

If a whole is divided into equal parts, these equal parts are called fractions.

Fractions are written like this :

[tex]\boxed{\\\begin{minipage}{4cm}fractions\\$\displaystyle\frac{x\xrightarrow{numerator}}{y\xrightarrow{denominator}} \\ \end{minipage}}[/tex]

Where

y = the number of total parts

x = the number of parts taken

Now, it doesn't necessarily have to be a pizza or a cake.

Suppose your companion Danette has 32 pencils. Out of them, 8 pencils are red.

What fraction of the pencils is red?

Total number of pencils = 32 (denominator)

Number of red pencils = 8 (numerator)

So the fraction of red pencils is :

[tex]\boxed{\\\begin{minipage}{4cm}Danette's\:pencils \\ $\displaystyle\frac{8}{32} \\ \end{minipage}}[/tex]

If the numerator and denominator are divisible by the same number, then we can reduce the fraction :

[tex]\boxed{\\\begin{minipage}{4cm}Danette's\:pencils \\ $\displaystyle\frac{1}{4} $\\ \end{minipage}}[/tex]

Questions about fractions? If any, comment ~

hope helpful ~

The length of a garden is 51 1/3 feet. One section of fencing is 3 feet
long. For each piece of fencing, 4 stakes are used to secure it in place. The stakes are equally spaced along the fencing process, with one stake at each end. How far apart are the stakes on one piece of fencing? (There are 14 sections of fencing)

Answers

Answer:

5280/2.5π

≈5280/2.5*3.14

≈5280/7.85

≈672.6, ≈673

I think you multiply pi by 2.5 is about 7.5 so the circumference is about 7.5

And next i think you divide 7.5 by 5280 and so you get 39,600

∠ADC and ∠CDJ are complementary angles. What is the m∠ADC?

*Hint, first find the value of x, then find the measure of the angle.

Line A K and line M J intersect at a right angle at point D. Line L C also passes through point D, forming angle A D C and angle J D C. Angle A D C measures four x degrees, and angle J D C measures three x minus eight degrees.

Question 6 options:

90°

56°

14°

34°

Answers

∠CDJ = 34°.

Step-by-step explanation:

In this question AK and MJ intersect at 90°.

∠ADC = 4x° and ∠JDC = (3x - 8)°

We have to find the measurement of ∠CDJ.

Since ∠MDA = ∠KDJ = ∠ADJ = ∠MDK = 90°

Therefore ∠ADJ = ∠ADC + ∠JDC = 90°

4x + 3x - 8 = 90

7x - 8 = 90

7x = 98

x = 98/7 = 14

Therefore m∠CDJ = 3x - 8 = 3×14 - 8 = 42 - 8 = 34°

Answer is m∠CDJ = 34°

Exploring permutations (PLEASE HELP)

Answers

Answer:

3 ways for number 1

Step-by-step explanation:

JUST TRUST ME!

2x2=4 math equals toon 1+3

Help pls. I don't know what to do :(

Answers

Answer:

2.8

Explanation:

[tex]r=\sqrt{\frac{v}{\pi h} } = \sqrt{\frac{213}{\pi (8.6)} } = 2.8078[/tex]

A baker has 10 pies. He will cut all the pies into pieces that are each 1/4 of the whole pie. How many pieces of pie will there be?

A. 1/40
B. 2 1/2
C. 14
D. 40

Answers

Answer:

Step-by-step explanation:

10 * 1/4 of a pie = 40

D. 40 because 10 pie time 4 slices each the total slices will be 40

PLS HELP IM TIMED
Shelby wants to buy 10 yards of fabric that costs $2.49 per yard. How much money will Shelby need to purchase all the fabric? $2.49 $4.01 $12.49 $24.90

Answers

Answer:

$24.90

Step-by-step explanation:

2.49 * 10

Answer:

she would need 10 * 2.49 = $24.9

Step-by-step explanation:

Math help, please. I need help.

Answers

Answer:

I also need help with that

Step-by-step explanation:

sorry

Help me, please! I'll give a brainlist point! :)

Answers

Answer:

105

Step-by-step explanation:

Area of a trapezoid is given by the formula:

A = (a+b)÷2×h

(where h is the vertical height, and a and b are the parallel lines)

Substituting values given gives us:

A = (6+15)÷2×10

A = 21÷2×10

A = 10.5×10

A = 105

Units will be m² as this is area.

Answer: Answer:Median: 10.5Lower quartile: 4Upper quartile: 16Explanation:Median:First, write the observations in ascending order or descending order.The formula to calculate the median is mean of (n/2) and (n/2+1)th observations, for even number of observationsn = 12 (even)Median = Mean of (6)th and (7)th observations = 10 + 11 divided by 2 = 21/2 = 10.5Therefore the median is 10.5.After writing in ascending or descending order the first and last terms justify the lower and upper limits respectively.They are:Lower quartile: 4Upper quartile: 16Question 2.the lengths of 10 pencils, in centimeters:18, 15, 4, 9, 14, 17, 16, 6, 8, 10Type below:_________________Answer:Median: 12Lower quartile: 4Upper quartile: 18Explanation:Median:First, write the observations in ascending order or descending order.The formula to calculate the median is mean of (n/2) and (n/2+1)th observations, for even number of observationsn = 10 (even)Median = Mean of (5)th and (6)th observations = 10 + 14 divided by 2 = 24/2 = 12Therefore the median is 12.After writing in ascending or descending order the first and last terms justify the lower and upper limits respectively.They are:Lower quartile: 4Upper quartile: 18Question 3.Make a box plot to display the data set in Exercise 2.Type below:_________________Answer:The above box plot represents the lower and upper quartiles, the median.Explanation:Box plot is drawn using the number line and the rectangle which is drawn above it.The ends of the rectangles say about the lower and upper limits and the middle line indicates the median.Question 4.The numbers of students on several teams are 9, 4, 5, 10, 11, 9, 8, and 6. Make a box plot for the data.Type below:_________________Answer: Explanation:Box plot is drawn using the number line and the rectangle which is drawn above it.The ends of the rectangles say about the lower and upper limits and the middle line indicates the median.Therefore the lower and upper quartiles are 4 and 11 respectively.Median:First, write the observations in ascending order or descending order.The formula to calculate the median is mean of (n/2) and (n/2+1)th observations, for even number of observationsn = 8 (even)Median = Mean of (4)th and (5)th observations = 8 + 9 divided by 2 = 17/2 = 8.5Therefore the median is 8.5.

Step-by-step explanation:

Median=11
Lower quartile=4
Upper quartile=16

If the volume of the prism is 480 cubic inches, what is the base length?
A) 10 inches
B) 20 inches
C) 22 inches
D) 24 inches

Answers

D)6 times 4 is 24 so the answer will be D)24 inches

What's the sum of Expression 2 and Expression 3 from above?

options:

3.8

5.3

7.3

17.3

Answers

I really don't know man.......................

Expression 2 value:
2.3

Expression 3 value:
3

2.3 + 3 = 5.3

Answer: 5.3

What is the interquartile range of this data set?

Answers

Answer:

Step-by-step explanation:

To find the interquartile range you would first have to find the median. If you list the number in least to greatest order you will find that the median is 30.5. After you find the median you will spilt the data set up. So on one side it will be 20, 25, 30 and 30, the other side you be 31, 40, 41, and 49. Next, you would find the median of the first set that I listed which is 27.5. You would do the same for the second set and find the median which is 40.5. You would then subtract the first sets median from the second sets median which is 40.5-27.5 and that is 13.

here is the problem if anyone knows the answer pls help thanks!

Answers

Answer:

Step-by-step explanation:

Just take any points and find the gradient it will be 2/3

Please give brainliest

Answer:first one probably I think probably

Step-by-step explanation:

The lines p and q intersect at point O.

What is the value of x?

Lines p and q intersect at point O. Acute vertical angles measure two x plus thirteen degrees, and three x minus three degrees.

Question 3 options:

10

3

-13

16

Answers

-13 is the answer my friend

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