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Shalnov [3]
4 years ago
11

(Picture Included) 20 points - can someone solve 11, 12, 13, and 15?

Mathematics
1 answer:
slavikrds [6]4 years ago
6 0

11. 3(5) + 2(4)

15 + 8 = 13


12.  x= -12

13. -30

15. x = 44


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Assume y varies directly as x. if y=8 when x=42; find y when x=126
Soloha48 [4]
Varies directly basically means a multiple of

y = kx

where "k" is the constant of variation. You must solve for this first using the given information.

8 = 42k
8/42 = k
0.19= k

Equation: y = 0.19x
when x = 126
y = 0.19(126)
y = 24


6 0
3 years ago
Identify the corresponding parts.
zheka24 [161]

Answer:

S,Z,F

Step-by-step explanation:

i just did it

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3 years ago
Steve has ​$25,000 to invest and wishes to earn an overall annual rate of return of 8​%. His financial advisor recommends that h
Alexeev081 [22]

Answer:

<em>Steve should place $6,250 in the 5-year CD and $18,750 in the corporate bond</em>

Step-by-step explanation:

<u>System of Equations</u>

We need to find how Steve will distribute his investments between two possible options: one of them will pay 5% per annum and the other will pay 9% per annum. We know Steve has $25,000 to invest and wants to have an overall annual rate of return of 8%.

Let's call x to the amount Steve will invest in the CD paying 5% per annum and y to the amount he will invest in a corporate bond paying 9% per annum.

The total investment is $25,000 which leads to the first equation

x+y=25,000

If x dollars are invested at 5%, then the interest return is 0.05x. Similarly, y dollars at 9% return 0.09y. The overall return is 8% on the total investment, thus

0.05x+0.09y=0.08(x+y)

Rearranging:

0.05x+0.09y=0.08x+0.08y

Simplifying

0.01y=0.03x

Multiplying by 100

y=3x

Substituting in the first equation

x+3x=25,000\\4x=25,000\\x=6,250

And therefore

y=25,000-6,250=18,750

Steve should place $6,250 in the 5-year CD and $18,750 in the corporate bond

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3 years ago
The amount of tax for each camera is $5.25 and the tax rate is 6% explain how the equation original cost times percent equals ta
lina2011 [118]

Answer:

The equation is adjusted by dividing the tax amount by the percent to find the original cost. Dividing by the percent is the inverse operation of multiplying by percent.

If this question is from edge 2021 it's 100% right.

4 0
3 years ago
Translate this sentence into an equation. 64 is the sum of 20 and Carlos's height. Use the variable c to represent Carlos's heig
vaieri [72.5K]
The answer is 64 = 20 + c
5 0
3 years ago
Read 2 more answers
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