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3 years ago

If the expression 5+2x was evaluated for x=4 it’s value would be

Mathematics

2 answers:

marissa [1.9K]3 years ago

7 0

The answer to the question is going to be X=13.

iris [78.8K]3 years ago

5 0

Answer: 13

Step-by-step explanation:

5+2x

When x=4

5+2(4)

5+8

= 13

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A salesperson earns $350.25 per week plus 12% of her weekly sales. Which of the following describes the sales necessary for the

Lynna [10]

Let X describes the sales

350.25+0.12x=800.5
Now solve for x
0.12x=800.5-350.25
0.12x=450.25
X=450.25÷0.12
X=3,752.08

the sales necessary for the salesperson to earn at least $800.50 in one week is 3,752.08

5 0

2 years ago

What's the area of the composite figure below ?

JulsSmile [24]

Answer:

31.13

Step-by-step explanation:

If you look carefully, you will find a semicircle and a triangle.

The total area is =

$\frac{\pi r^{2}}{2} + \frac{1}{2} \times base \times height\\$

r = 4 - 0 = 4
base = |-4-0 | = 4
height = 14 - 9 = 5

So if we put the values:

$\frac{\pi \times 4^{2}}{2} + \frac{1}{2} \times 4 \times 3\\= 31.13$

3 0

2 years ago

Please answer quickly!

Damm [24]

Answer:

2.57 or 2.5703939893007399

Hope this helped have a good one! :)

6 0

2 years ago

Evaluate the function.<br> f(x) = -2x2 + 7<br> Find f(-5)

Alla [95]

-2(-5)^2 + 7
-2 • 5^2 + 7
-2 • 25 + 7
-50 + 7
-43

6 0

2 years ago

How do you solve this

love history [14]

Answer:

x=-2

Step-by-step explanation:

$\frac{1}{6{x}^{2} } = \frac{1}{2x} + \frac{7}{6 {x}^{2} } \\ \frac{7}{6 {x}^{2} } - \frac{1}{6{x}^{2} } + \frac{1}{2 {x} } = 0 \: \: \: \: \: ( - \frac{1}{6 {x}^{2} } \: throughout) \\ \frac{6}{6 {x}^{2} } + \frac{1}{2x} = 0 \: \: \: \: \: (simplify)\\ \frac{1}{ {x}^{2} } + \frac{1}{2x} = 0 \\ \frac{2 {x}^{2} }{ {x}^{2} } + \frac{2 {x}^{2} }{2x} = 0 \: \: \: \: \: ( \times 2 {x}^{2} \: throughout) \\ 2 + x = 0 \: \: \: \: \: (simplify)\\ x = - 2$

4 0

2 years ago