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3 years ago

14

What is 5 + 2(3x + 4)+ x?

2 answers:

Sholpan [36]3 years ago

4 0

Answer:

What is 5 + 2(3x + 4)+ x?

the answer is 7x + 13

Step-by-step explanation:

from the quwstion What is 5 + 2(3x + 4)+ x

we aproach the problem using BODMAS

we have;

5 + 6x + 8 + x

=7x + 13

earnstyle [38]3 years ago

3 0

The answer is: 13+7x

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In triangle ABC, a = 7, b = 3, and cos C=. The value of c is

mihalych1998 [28]

Answer: 7.615

Step-by-step explanation:

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4 years ago

These tables represent a quadratic function with a vertex at (0,3). What is the average rate of change for the interval from X =

Eva8 [605]

Answer:

-19

Step-by-step explanation:

The missing table is shown in the attachment.

Since the quadratic function has vertex at (0,3), its equation is of the form;

$y = a {x}^{2} + 3$

To find the value of 'a' we substitute any other point from the table say (1,2) to get:

$2 = a( {1)}^{2} + 3$

$a = 2 - 3 = - 1$

Hence the function is

$y = - {x}^{2} + 3$

Now

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$f(9) = - 81 + 3 = - 78$

The average rate of change from x=9 to x=10 is

$\frac{f(10) - f(9)}{10 - 9} = \frac{ - 97 - - 78}{1} = - 19$

7 0

4 years ago

How do I do this help idk what to do

Julli [10]

9: 0.8
10: 16.8
11: 0.6
12: 2.
13: 0.4

4 0

3 years ago

Can somebody please give me a step by step explanation. I have the answer I just don’t know how to show work!!!!!!! Please!!!

krek1111 [17]

Answer:

5391.76

Step-by-step explanation:

We have a rectangle and 2 semicircles

First find the area of the rectangle

A = l*w

A = 44*88= 3872

Then we know that 2 semicircles = 1 circle

The area of a circle is

A = pi r^2

The diameter is 44 so the radius is 22

A = pi * 22^2

A = pi484

A =1519.76

Add the areas together

1519.76+3872

5391.76

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4 years ago

Which of the following describes how to graph the line whose equation is y = x - 1?

jonny [76]

If we place 0 and 1 for the x then:
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this is the line:

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4 years ago