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MA_775_DIABLO [31]
3 years ago
9

Please help me!! This is math 7th grade

Mathematics
1 answer:
Musya8 [376]3 years ago
6 0

Answer:

14) false

15) false

Step-by-step explanation:

14) 120% of a positive whole number is always greater than the number. If the number is 1, 120% of it would give us 1.2 which is greater than 1. However if the number is a negative whole number, 120% of it would give us a smaller number. Let's try -1. 120% of -1 would give us -1.2, which is smaller than -1. Hence the statement is false.

15) 0.5% of a number is 0.5/100 of the number so we should multiply the number by 5/1000. 5/100 is only 5% of the number. Hence the statement is also false.

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Multiply the polynomial 3x2+4x+4)(2x-4)​
Lorico [155]

Answer:

\large \boxed{6x^{3} - 4x^{2} - 8x -16}

Step-by-step explanation:

(3x² + 4x + 4)(2x - 4)

The easiest method is probably to use long multiplication.

3x²  + 4x   + 4

<u>2x   -  4             </u>

6x³ +  8x² +  8x

<u>       - 12x² - 16x - 16</u>

6x³ -  4x² -   8x -16

\text{The product of the polynomials is $\large \boxed{\mathbf{6x^{3} - 4x^{2} - 8x -16}}$}

8 0
3 years ago
Read 2 more answers
8. The product of a number and 4 is less than or equal to 36.
olya-2409 [2.1K]
For instance take 9; 9x4= 36
So it will be equal
7 0
2 years ago
If correct then I’ll mark brainlist
Leto [7]

Answer:

(-11, -12)

Step-by-step explanation:

we need one variable to x out

on the note of x, lets cancel out the xs

6x+3y=-102

3x+y=-45 < same as 6x+2y-90

6x+3y=-102

-

6x+2y=-90

y=-12

substitute y in

3x-12=-45

3x=-33

x=-11

(-11, -12)

Please give brainliest :)

5 0
2 years ago
Describe the operation used to solve the equation 5/6 x - 2= -2/3 x + 1
yuradex [85]

Answer:

I love algebra anyways  

the ans is in the picture with the steps  

(hope it helps can i plz have brainlist :D hehe)

Step-by-step explanation:

3 0
2 years ago
X + y = 5<br> y = 3x + 1<br><br><br> How do I find the solution from these two equations by graphing
Mandarinka [93]

Answer:

x=1, y=4

Step-by-step explanation:

x+y=5 - (1)

y=3x + 1 (2)

Sub (2) into (1)

x + (3x +1)=5

4x=5-1

x=4 ÷4

=1

Sub x=1 into (2)

y=3(1)+1

= 4

5 0
3 years ago
Read 2 more answers
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