All categories

3 years ago

Is the work shown below correct? Explain your answer.

1 answer:

riadik2000 [5.3K]3 years ago

8 0

(11 + 21) - ( 3 - 100 )
= 32 + 97
= 129

or (11+21)-(3+100)
= 32 - 103
= - 71

I have no idea about your topic but hope it's right! Good luck

You might be interested in

Determine the probability of having 1 girl and 3 boys i a 4 child family assuming boys and girls are equally likely

Helga [31]

Answer:

$\frac{1}{4}$

Step-by-step explanation:

Im glad i could help out.

4 0

2 years ago

What is the answer to this equation 6x+3-6x=3

aev [14]

Answer:

0=0

Step-by-step explanation:

6x-6x=0

cancel the terms on both sides of the equation

0=0 the sum of two opposites equals zero

this statement is correct

5 0

3 years ago

What is the common ratio between successive terms in the sequence?

amid [387]

Answer:

Common Ratio=1/3

Step-by-step explanation:

4 0

3 years ago

1. Mark and Bill have a combined weight of 170

qwelly [4]

<h3>Equation : x + y = 170 and y = 2x - 40</h3><h3>The weight of Bill is 70 pounds and weight of mark is 100 pounds</h3>

<em><u>Solution:</u></em>

Let the weight of Bill be "x"

Let the weight of mark be "y"

Given that,

Mark and Bill have a combined weight of 170 pounds

Therefore,

x + y = 170 ------- eqn 1

Mark weighs 40 pounds less than twice Bill's weight

y = 2x - 40 ------- eqn 2

<em><u>Substitute eqn 2 in eqn 1</u></em>

x + 2x - 40 = 170

3x = 170 + 40

3x = 210

x = 70

<em><u>Substitute x = 70 in eqn 2</u></em>

y = 2(70) - 40

y = 140 - 40

y = 100

Thus weight of Bill is 70 pounds and weight of mark is 100 pounds

6 0

3 years ago

Mark buys a wooden board that is 7 1/2 feet long. The cost of the board is $0.50 per foot, including tax. What is the total cost

artcher [175]

Answer:

Total cost of Mark's board is $3.75.

Step-by-step explanation:

We are given the following in the question:

Length of wooden board =

$=7\dfrac{1}{2}\text{ foot}$

Unit cost of board = $0.50 per foot

Total cost of board =

$=\text{Length of board}\times \text{Unit cost of board}\\\\=7\dfrac{1}{2}\times 0.50\\\\=\dfrac{15}{2}\times \dfrac{1}{2}\\\\=\dfrac{15}{4} = 3.75\$$

Thus, total cost of Mark's board is $3.75.

7 0

3 years ago