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3 years ago

The sum of a number and 9 is -30

Mathematics

1 answer:

GrogVix [38]3 years ago

4 0

-39+9=-30

-39 is your answer.

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What is the interquartile range of 77 88 92 81 86 84 86 83 and how do you get it thx plz help

puteri [66]

To find the IQR you first need to write it in numerical order

77, 81, 83, 84, 86, 86, 88, 92

IQR is just Q3 - Q1

Q1 is the middle of the first have, since it has an even set of 4 numbers in the first half you need to take the average of the two middle ones.. which is 82

Q3 done the same process would be 87.

87 - 82 = 5

IQR = 5

6 0

3 years ago

Hugo lifted a total of 72 pounds in 9 attempts. Hugo lifted the same number of pounds in each attempt. how many pounds did he li

valkas [14]

8 attempts

72 divided by 9 equals answer

3 0

3 years ago

Read 2 more answers

1 2 3 4 5 6 7 8 9 10 Susan plans to use 120 feet of fencing to enclose a rectangular area for a garden. Which equation best mode

Troyanec [42]

Answer:

$Area = 60x - x^2$

Step-by-step explanation:

Given

$Perimeter = 120$

$Side\ 1 = x$

Required

The area of the garden

First, we calculate the length of the other side using:

$Perimeter = 2 *(Side\ 1 + Side\ 2)$

This gives:

$120 = 2 *(x + Side\ 2)$

Divide both sides by 2

$60 = x + Side\ 2$

Make Side 2 the subject

$Side\ 2 = 60 - x$

So, the area of the garden is:

$Area = Side\ 1 * Side\ 2$

$Area = x * (60 - x)$

Expand

$Area = 60x - x^2$

7 0

2 years ago

For what value of x is the square of the binomial x+1 one hundred and twenty greater than the square of the binomial x-3

My name is Ann [436]

Answer:

x = 16

Step-by-step explanation:

(x + 1)² = (x - 3)² + 120

x² + 2x + 1 = x² - 6x + 9 + 120

8x = 128

x = 16

3 0

1 year ago

Raymond purchased a package of ground beef at a cost of $1.98 per pound. If, for the same amount of money, Raymond could have pu

Firlakuza [10]

Answer:

So, the cost per pound of the steak is $3.3.

Step-by-step explanation:

We know that Raymond purchased a package of ground beef at a cost of $1.98 per pound. For the same amount of money, Raymond could have purchased a piece of steak that weighed 40 percent less than the package of ground beef.

We conclude that 40% is less than one pound, is equal with 0.6 pound.

We have the following proportion:

$0.6:1.98=1:x\\\\0.6x=1.98\\\\x=\frac{1.98}{0.6}\\\\x=3.3\\$

So, the cost per pound of the steak is $3.3.

4 0

3 years ago