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4 years ago

Simplify to create an equivalent expression:7(5+2c)+3c

Mathematics

2 answers:

Harrizon [31]4 years ago

6 0

Use distributive property on the first half of the equation:

35+14c+3c

Then just add the like terms

35+17c

Arte-miy333 [17]4 years ago

3 0

7x7c+3c that’s all I know hope it helps

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What is the surface area of the prism shown A 1.5 square meters 05 m 1' 12 m B 1.8 square meters \ f I 3 C 2.16 square meters 1.

kakasveta [241]

1.3 x 0.4 x 2 = 1.04
0.5 x 0.4 = 0.2
( $\frac{1}{2}$ (0.5 x 1.2)) x 2 = 0.6

1.04 + 0.2 + 0.6 = 1.84m²

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3 years ago

Read 2 more answers

A city has designed a survey to collect information about residents’ opinions about city services. Which of the following descri

Maslowich

Bias refers to scenarios which might affect the ability of a statistical experiment to generalize, hence affecting the validity of research. Non-response bias occurs when majority of subjects fail to respond during a survey. Hence, a likely scenario is ; surveys were mailed to 500 people, and 200 of the surveys were completed and returned.

Non - response bias has to do with a situation whereby a large percentage of the selected samples from a population do not respond or fail to participate in the experiment or survey.

If 200 surveys were returned, then 300 of the sample participants did not respond. Which means 60% of the sample are non-responsive.

Therefore, a scenario where surveys were mailed to 500 people, and 200 of the surveys were completed and returned exemplifies a non - response bias.

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3 years ago

Two cars leave at the same time from points A and B, the distance between them is 280 km. If the cars meet each other, they’ll m

kykrilka [37]

Set up the following equations:

$2x + 2y = 280$

$14x - 14y = 280$

x represents car A's speed, and y represents car B's speed.

We'll use elimination to solve this system of equations. Multiply the first equation by 7:

$(2x + 2y = 280) * 7 = 14x + 14y = 1960$

$14x - 14y = 280$

Combine both equations:

$28x = 2240$

Divide both sides by 28 to get x by itself:

$x = 80$

The speed of car A is 80 mph.

Since we now know the value of one of the variables, we can plug it into the first equation:

$2(80) + 2y = 280$

$160 + 2y = 280$

Subtract 160 from both sides.

$2y = 120$

Divide both sides by 2 to get y by itself:

$y = 60$

The speed of car B is 60 mph.

7 0

4 years ago

Evaluate f(4) for the function f(x)=3x-5 A.12 B.7 C.9 D.17

suter [353]

the answer is b.7

Step-by-step explanation:

because you have to plug in the f(4) to the equation like this

f(4)=3(4)-5

and then multiple 3x4 which is 12 then subtract 12 and 5 and you get 7.

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3 years ago

Can someone help me with this problem

IRISSAK [1]

If your looking for the value of "x" it is 4.

Hope this helped!

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2 years ago