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Lena [83]
3 years ago
10

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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Veronika [31]

Answer: $2,393.42

Step-by-step explanation:

I suppose that the salary is yearly.

So in one year, 365 days, the net pay would be $62,400.

Now, "by-weekly" refers to two weeks or 14 days.

If she gets paid $62,400 in 365 days.

Then in 14 she gets paid.

N = (14/365)*$62,400 = $2,393.42

3 0
3 years ago
Review Word Problems ?
melomori [17]
1.) 2=50%

2.) 25% of 30,000= 7500
4 0
3 years ago
2 divided by 3460 explanation please
LUCKY_DIMON [66]
<span>2/3460              Original Mathematical Expression.

1/1730                Divide numerator and denominator by 2.

This equals . . .

</span><span>0.00057803468

(I just plugged 1/1730 into calculator)

Final Answer: 1/1730 or </span><span>0.00057803468</span>
3 0
3 years ago
show that thw roots of the equation (x-a)(x_b)=k^2 are always real if a,b and k are real. Please I really need help with this
VLD [36.1K]

Answer:

see explanation

Step-by-step explanation:

Check the value of the discriminant

Δ = b² - 4ac

• If b² - 4ac > 0 then roots are real

• If b² - 4ac = 0 roots are real and equal

• If b² - 4ac < 0 then roots are not real

given (x - a)(x - b) = k² ( expand factors )

x² - bx - ax - k² = 0 ( in standard form )

x² + x(- a - b) - k² = 0

with a = 1, b = (- a - b), c = -k²

b² - 4ac = (- a - b)² + 4k²

For a, b, k ∈ R then (- a - b)² ≥ 0 and 4k² ≥ 0

Hence roots of the equation are always real for a, b, k ∈ R


           

8 0
3 years ago
Sam’s business manufactures 5 times as many widgets as Mary does every hour but Sam needs to stop for a few minutes every hour a
natita [175]
Answer:
A) S=5M-3

Explanation:
6 0
3 years ago
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