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3 years ago

4

Write two subtraction equations to show how to find 15-7?

2 answers:

blondinia [14]3 years ago

7 0

Well just do 15-7 subtract 7 and you get 8

larisa [96]3 years ago

3 0

Answer:

The required two subtraction equation is (10 - 5) + (5 - 2)

Step-by-step explanation:

Consider the provided information,

We need to write two subtraction equations to show how to find 15-7

First consider the number 15

The number 15 can be written as:

15 = 10 + 5

The number 7 can be written as:

7 = 5 + 2

Now substitute the respective values in original expression.

(10 + 5) - (5 + 2)

Open the parentheses

10 + 5 - 5 - 2

Now rearrange them as shown below:

10 - 5 + 5 - 2

Close in parentheses.

(10 - 5) + (5 - 2)

Thus, the required two subtraction equation is (10 - 5) + (5 - 2)

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A reporter collects a random sample of 50 runners from all the runners who finished the Cherry Blossom Ten Mile Run in 2009 and

goldenfox [79]

Answer:

Option D

Step-by-step explanation:

A reporter collects a random sample of 50 runners from all the runners who finished the Cherry Blossom Ten Mile Run in 2009 and constructs a 99% confidence interval for the true mean finish time to be (86.05, 99.38) minutes.

Assuming the reporter performed the calculations correctly, which of the following statements are appropriate interpretations of this confidence interval?

We can expect that 99% of confidence intervals created using the same method the reporter used will contain the true mean run time for runners of this race.

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3 years ago

Which is the better buy, 36 cans for $3.32, or 9 cans for $0.91 ?

valentina_108 [34]

Answer:

36 cans for $3.32

Step-by-step explanation:

36 cans = $3.32

1 can =$ 0.092

9 cans = $0.91

1 can = $0.01

0.09 and 0.1 the cheaper is 0.09 dollars so 36 cans for $3.32 is better

6 0

4 years ago

I don’t get this Please help

ValentinkaMS [17]

Answer:

The second one! -5.99%

Step-by-step explanation:

3 0

3 years ago

!!!!!! URGENT PLS HELP ME ANSWER !!!!

laila [671]

Answer:

1) A = 547.1136, C = 82.896

2) A = 678.5226, C = 92.316

3) A = 844.5344, C = 102.992

4) A = 1554.49625, C = 139.73

5) A = 1561.4906, C = 140.044

6) A = 994.8776, C = 111.784

Step-by-step explanation:

1)

$A = \Pi (\frac{D}{2})^2 = 3.14 * (\frac{26.4}{2})^2 = 3.14 * 13.2^2 = 547.1136$

$C = \Pi D = 3.14 * 26.4 = 82.896$

2)

$A = \Pi r^2 = 3.14*(14.7)^2 = 678.5226$

$C = 2\Pi r = 14.7*2 * 3.14 = 92.316$

3)

$A = \Pi (\frac{D}{2})^2 = 3.14 * (\frac{32.8}{2})^2 = 3.14 * 16.4^2 = 844.5344$

$C = \Pi D = 3.14 * 32.8 = 102.992$

4)

$A = \Pi (\frac{D}{2})^2 = 3.14 * (\frac{44.5}{2})^2 = 3.14 * 22.25^2 = 1554.49625$

$C = \Pi D = 44.5*3.14 = 139.73$

5)

$A = \Pi r^2 = 3.14*22.3^2 = 1561.4906$

$C = 2\Pi r = 2 * 3.14 * 22.3 = 140.044$

6)

$A = \Pi r^2 = 3.14 * 17.8^2 = 994.8776$

$C = 2\Pi r = 2 * 3.14 * 17.8 = 111.784$

8 0

3 years ago

Solve the inequality 3(2x+7)>-3+5x.

lilavasa [31]

Answer:

Check pdf

Step-by-step explanation:

7 0

3 years ago