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alexandr1967 [171]
3 years ago
14

C. What is the relationship between a + b and b + a?

Mathematics
1 answer:
Law Incorporation [45]3 years ago
5 0

Answer:they would be fact families

Step-by-step explanation:

I think

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Which of the following is a solution of x^2+8x= -32
juin [17]

Answer:

X1=-4+4i

X2=-4-4i

Step-by-step explanation:

X^2+8x+32=0

Δ=b^2-4ac=8^2-4(32)=-64<0

X1=(-b-i√Δ) /2a=(-8-8i)/2=-4-4i

X2=(-b+i√Δ) /2a=(-8+8i)/2=-4+4i

3 0
3 years ago
If PR = 4x – 2 and RS = 3x – 5, which expression represents PS?
seropon [69]

Answer:

7x-7

Step-by-step explanation:

We have been given that PR=4x-2 and RS=3x-5. We are asked to find the expression that represents length of PS.

We know that PS=PR+RS.

Upon substituting our given values in above equation, we will get:

PS=4x-2+(3x-5)

PS=4x-2+3x-5

PS=4x+3x-2-5

PS=7x-7

Therefore, the expression 7x-7 represents length of PS.

3 0
4 years ago
Many practical applications require calculations of area. Some of these calculations are straightforward, but others are more di
lorasvet [3.4K]

Answer:

L*W

Step-by-step explanation:

As we Know tha area of a rectangle is Leght*witdth so in this case will be L*W but lets prove it by calculating the integral:

Area= L*W= \int\limits^w_0 F{x} \, dx =\int\limits^w_0 L*w({x}) \, dx

So as the integral of a constant is the constant multiplied by the integration variable x.

The integral becomes: L*W(x) where W(x) in this case is W= L*W

Good luck!

4 0
3 years ago
How do you help children with their homework?
marishachu [46]

Answer:

Figure out how their teacher, teaches them and try to mimic that learning style. So the child's learns with one way and not multiple.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
−k−(−8k+7) what is the answer, I want an explanation please
lord [1]

Answer:

Step-by-step explanation:

-k - ( -8k + 7)

negative sign is outside the parenthesis. so it should be multiplied with -8k and 7

-k - (-8k + 7) = -k - 8k * (-1) + 7*(-1)

                    = -1k + 8k - 7

Now -k and 8k are like terms. So, combine them.

                    = 7k - 7

4 0
3 years ago
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