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Levart [38]
2 years ago
12

Simplify the expression by combining like terms. 4x2 – 3y2 + 3z – 5z - 5y2

Mathematics
1 answer:
bixtya [17]2 years ago
3 0

Answer:

Step-by-step explanation:

4x^2 - 3y^2 + 3z - 5z - 5y^2

4x^2 - 8y^2 - 2z

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Stephen is 2 years older than Sushil. krutika is 4 years younger than Sushil. If the total of their ages is 61, how old is the e
german
Shushils age = 19.6
Stephens age 21.6
Krutikas age = 15.6

6 0
3 years ago
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-3x+2-5x-7=4x+2 what is the first step solve this<br> equation?
Triss [41]

Answer: x = -0.58

Step-by-step explanation:

-3x+2-5x-7=4x+2

First step, collect like terms

-3x -5x-4x = 2-2+7

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x = 7/-12

x = -0.58

5 0
3 years ago
Rewrite the expression 13d - (-9d - 4) without parentheses
dimaraw [331]
13d-(-9d-4)
Transfer minus sign to all numbers in parenthesis. = 13d +9d +4 =

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4 0
3 years ago
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A retired woman has $280,000 to invest. She has chosen one relatively safe investment fund that has an annual yield of 9% and an
ASHA 777 [7]

Answer:

9% fund: $ 210,000

13% fund: $70,000

Step-by-step explanation:

As she wants to have a $28,000 annual return for her $280,000 investment, she is expecting a return rate of 10%:

r=\dfrac{R}{C}=\dfrac{28,000}{280,000}=0.10

If we call x the proportion of the capital in the 9% fund, then (1-x) is the proportion of the capital in the 13% fund,and the return of the combination has to be the expected return of 10%:

0.09x+0.13(1-x)=0.10\\\\0.09x+0.13-0.13x=0.10\\\\-0.04x=0.10-0.13=-0.03\\\\x=\dfrac{0.03}{0.04}=0.75

Then, we know that 75% of the capital should be invested in the 9% fund and 25% in the 13% fund.

This correspond to a capital of:

9% fund: 0.75*$280,000 = $ 210,000

13% fund: 0.25*$280,000 = $70,000

6 0
3 years ago
Find the values of x and y.
kupik [55]

Answer:

x=6, y=75

Step-by-step explanation:

Since the diameter of the circle is a perpendicular bisector to the chord, x and 6 must be equal and therefore x=6. It also bisects the arc, meaning that y=75. Hope this helps!

4 0
3 years ago
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