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3 years ago

Can i get help I'm struggling right now

Mathematics

2 answers:

IgorLugansk [536]3 years ago

5 0

Answer:

Step-by-step explanation:

You do 7a+2a=9a because you would have to give an a to each number with using distributive property

andrezito [222]3 years ago

3 0

Answer:

7a+2a=9a

Step-by-step explanation:

You distribute the a to each of the numbers in the parenthesis. Which means that you multiply. You should be left with a 7a+2a. Then since 7+2=9, your answer is 9a. So answer 1 is correct because they do these exact steps.

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Need help please for school thank uuuuu

kramer

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3 years ago

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3 years ago

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What is the minimum y value on the graph of y = cosx + 5? -6 -4 4 6

djyliett [7]

On a cos(x) graph, the minimum y-value is always -1. Since you are adding 5 to -1, the minimum values is 4.

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4 years ago

A team of storm enthusiasts collected data to show the relationship between the time between seeing lightning and then hearing t

never [62]

Answer:

Proportionality constant = $\frac{1}{5}$

Step-by-step explanation:

From the graph attached,

Data set representing the relation between seeing lightning and the hearing thunder is,

{(15, 3), (25, 5), (35, 7), (45, 9)}

Since, Distance from lightening (d) ∝ Time between lightening and thunder (t)

d = kt

Here k = proportionality constant

k = $\frac{d}{t}$

From the data set one point is (15, 3).

k = $\frac{3}{15}$

k = $\frac{1}{5}$ miles per second

Therefore, proportionality constant is $\frac{1}{5}$ miles per second.

3 0

3 years ago

Given the following triangle, if c = square root of 7 and a = 1, find the measure of B.

Darya [45]

Answer:

68°

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you that the relation between the angle's adjacent side and the hypotenuse is ...

Cos = Adjacent/Hypotenuse

This means ...

cos(B) = a/c

B = arccos(1/√7) ≈ 68°

5 0

3 years ago