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Goryan [66]
3 years ago
12

The expression (x+3)(x+5) is equivalent to?

Mathematics
1 answer:
LiRa [457]3 years ago
8 0

Answer:

B. x^2 + 8x + 15

Step-by-step explanation:

Use FOIL

First

Outside

Inside

Last

F: x * x = x^2

O: x * 5 = 5x

I: 3 * x = 3x

L: 3 * 5 = 15

Combine like terms

5x + 3x = 8x

x^2 + 8x +15

B. x^2 + 8x + 15

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Given the two perallel line ,determine the measure of x a= x=125 b= x=135 c= x=45 d= x=55
dedylja [7]

Answer:a

Step-by-step explanation:

7 0
3 years ago
Can you use the SSS Postulate or the SAS Postulate to prove triangle FEZ is congruent to triangle FGZ?
love history [14]
SAS only. The 3rd side cannot be proven. 
8 0
3 years ago
1
irina [24]

Answer:

0.530 (the 0 is not required)

Step-by-step explanation:

this is because another combination would be .35 which is less than .53 so this what i think the answer is.

--hope this helped :))

7 0
3 years ago
Please help! Thanks in advance.
alukav5142 [94]
In this problem, we need to plug in the given x values for f(x)=0 and find a and b.

When we plug in 1, we get: 2 \times {1}^{4} - 5 \times {1}^{3} - 14 \times {1}^{2} + a \times 1 + b = 0

Simplify:
2 - 5 - 14 + a + b = 0
- 17 + a + b = 0
a + b = 17

We got our first statement about the values of the variables. If we find one more we can find those 2 variables.

We have another given root: 4.

Plug it in:
2 \times {4}^{4} - 5 \times {4}^{3} - 14 \times {4}^{2} + a \times 4 + b = 0
512 - 320 - 224 + 4a + b = 0
- 32 + 4a + b = 0
4a + b = 32

Now we have our second one. We can combine them:
a + b = 17 \\ 4a + b = 32

I use elimination method which is easier here.

Multiply the top equation by -1: - a - b = - 17 \\ 4a + b = 32

Add them up:
3a = 15

Simplify:
a = 5

Now we have a, we can plug in one of those equations to find b:
5 + b = 17
b = 17 - 5
b = 12

So, the answers are a=5 and b=12 .
6 0
3 years ago
When a die is rolled 20 times, 4 came up 5 times.
GenaCL600 [577]
The answer would be 1/6 assuming a fair trial

5 0
3 years ago
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