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Karolina [17]
3 years ago
9

How do i simplify this expression?3(a-7)=?​

Mathematics
1 answer:
kolbaska11 [484]3 years ago
3 0

Answer: 3a-21

Step-by-step explanation:

Apply distributive property

a=3-3*7

Multiply 3*7=21

Answer: 3a--21

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PLEASE HELP!! Find an equation for the graph, Write in form y=AsinBx or y=AcosBx.
Zepler [3.9K]

Answer:

4cos4x

Step-by-step explanation:

let's use cos

amplitude=4

period=pi/2

2pi/x=pi/2

x=4

no phase shift

y=4cos4x

pic from desmos

5 0
2 years ago
ASAP PLS! What is 2k^2+3k-13=k^2+15?
shepuryov [24]

2k^2+3k-13=k^2+15

subtract k^2 -15 from each side

k^2 +3k -28=0

(k+7)(k-4)=0

k=-7  k=4

Answer: k= -7,4

8 0
3 years ago
Find the output, kkk, when the input, ttt, is -7−7minus, 7.<br> k = 10t-19k=10t−19
Sati [7]

The output k at input t = -7 is -89

Step-by-step explanation:

In order to find the value of a expression on given number, we put the number in given expression in place of independent variable

So,

Given expression is:

k = 10t-19

It is given that the value of t has to be -7

so putting t=-7 in the expression

k = 10(-7)-19\\k = -70-19\\k = -89

Hence,

The output k at input t = -7 is -89

Keywords: Expressions, input, output

Learn more about expressions at:

  • brainly.com/question/9723881
  • brainly.com/question/9720317

#LearnwithBrainly

8 0
3 years ago
Read 2 more answers
Please help me ASAP. Find the area of the figure
ValentinkaMS [17]

Answer:

55.8

Step-by-step explanation:

all ya gotta do is multiply the numbers together

8 0
3 years ago
I will like to know how to solve this
Alexxandr [17]
This is a linear equation in x.

So you need to group like terms

1 + 4x =  - 5 + 7x
Let us group the x terms on the Right Hand Side of the equation and the constant terms on the Left Hand Side.

1 + 5 = 7x - 4x
We can now simplify

6 = 3x
Now let us divide both sides by 3.

\frac{6}{3}  =  \frac{3x}{3}

This implies that

2 = x
or

x = 2
Let us our answer

1 + 4(2) =  - 5  + 7(2)

1 + 8 =  - 5 + 14
9 = 9
Good we are right
5 0
3 years ago
Read 2 more answers
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