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SCORPION-xisa [38]
2 years ago
12

Help please solve math equations for middle schoolers in 7th grade!

Mathematics
1 answer:
lubasha [3.4K]2 years ago
6 0
A.) 7x^3 + 8x^2 + 7x + 11
b.) 11x^2 + x + 1
c.) 5x^2 - x - 20
d.) 6x^3 + 6x^2 + 2x - 9
e.) 2x^2 + 9x +2
f.) 6x^3 + 7x + 1 - 3x^2
g.) -x • (5x - 9 + 2x^3)
h.) -5x^3 + 13x + 1

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What is the product of the polynomial (7x+7) (x+2)
kolbaska11 [484]

Answer: 7x^2+21x+14

Step-by-step explanation:

(7x+7)(x+2)

Multiply each term in the first parentheses by each term in the second parentheses (FOIL)

7x×x+7x×2+7x+7×2

↘ ↙

7x×x calculate product

7x^2+7x×2+7x+7×2

↘ ↙

7x×2 calculate product

7x^2+14x+7x+7×2

↘↙

7×2 multiply numbers

7x^2+14x+7x+14

↘ ↙

21x collect like terms

7x^2+21x+14 is your end result.

3 0
3 years ago
If you had a billion dollars and you waste half of your money how much would you Have plzz heart this
Ne4ueva [31]
You would have half a billion
4 0
2 years ago
Read 2 more answers
Continue the pattern 31, 5, 32, 10, 33, 15, blank blank blank
klemol [59]

Answer:

34, 20, 35, ...

Step-by-step explanation:

From what I see, it is alternating between two patterns: +5 starting at 5, and +1 starting at 31.

7 0
3 years ago
Read 2 more answers
Solve this equation with substitution method :-<br> x+5 = 3 (y+5)<br> x-5 = 7 (y-5)
Damm [24]
From the first equation,
x+5 = 3(y+5)
x = 3y + 15 - 5
Now substitue x in the second equation with (3y +15 - 5).
x-5 = 7(y-5)
(3y+15-5) - 5 = 7(y-5)
3y +5 = 7y - 35
-4y = - 40
y = 10

Since y is 10, and x is (3y +15 - 5),
x = 30 + 15 - 5 = 40
5 0
2 years ago
In this diagram which equation could you prove to be true in order to conclude that the lines are parallel
KiRa [710]
I would say that the correct answer is D. because y is always the numerator while x is the denominator for the equation y2 - y1/x2 - x1 which means if there is two y's or two x's on the same line you subtract the second one from the first one. If there is only one y and/or x and the other is 0 on the same line, it stays at y or x without subtracting y2 - y1 or x2 - x1. 

Since b is on the y coordinate and -a is on the x coordinate, you would make it b/a while -a is gonna be a positive since the lines are going up and to the right. Now, since c is the y coordinate and d is the x coordinate, make C the numerator and d the denominator since y is always the numerator and x is the denominator for these parallel line figures on the graph and the equation will be equaled to the fraction to the other fraction for parallel lines. 

So, your answer would be D. b/a = c/d 

Hope this helps, and is correct! 

<em>~ ShadowXReaper069</em>
3 0
3 years ago
Read 2 more answers
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