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Snowcat [4.5K]
3 years ago
8

Help me please been stuck for an hour

Mathematics
1 answer:
rewona [7]3 years ago
4 0

Answer:

29/28

Step-by-step explanation:

-  \frac{2}{7}  \times ( - 3 \frac{5}{8} ) \\  -  \frac{2}{7}  \times ( -  \frac{29}{8} ) \\

=  \frac{29}{28}

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Find the solution to the system of equations.
VARVARA [1.3K]

Answer:

(2,3)

Step-by-step explanation:

use the equal values method.

set y equal to itself.

y = -2x+7 but also 5x-7

-2x+7=5x-7   ............................. solve the equation

7x=14

x=2

Now substitute the x value into one of the equations given. for example i'll do -2x+7.

-2(2) +7 =y

-4+7=y

3=y

so thats your answer

x=2, y=3

(2,3)

6 0
4 years ago
Please help:))))))
Veronika [31]

Answer:

1. 6x^2 + 4x - 4y

2. x - 10y.

3. 6x^5

4.  36 a^6 b^8

5. x^2 - 81

6. 9x^2 - 42x + 49

7. 12x^2 +3x - 42


Step-by-step explanation:

1. 3x^2+4x+3x^2-4y

Add the like terms, we get

6x^2 + 4x - 4y


2. (5x-2y)-(4x+8y)

Now distribute the negative sign, we get

5x - 2y -4x -8y

Simplify the like terms, we get

x - 10y.


3. 3x^3(2x)^2

Multiply the numbers and simplify the variables

6x^(3 +2)

6x^5

4. (-6a^3b^4)^2

Now bring the power 2 inside the parenthesis.

-6^2 a^6 b^8

= 36a^6b^8


5. (x+9) (x-9)

x^2 + 9x -9x - 81

x^2 - 81


6. (3x-7)^2

(3x - 7)(3x - 7)

9x^2 - 21x -21x + 49

9x^2 - 42x + 49


7. (3x+6) (4x-7)

12x^2 + 24x -21x - 42

12x^2 +3x - 42

Thank you.

8 0
3 years ago
What does 13(9−6m)+14(12m−8) =
Nadya [2.5K]

m= 70/27 simplified m= 2 16/27

7 0
3 years ago
Read 2 more answers
What is (6-4)63 + 6 =
xxTIMURxx [149]

Answer:

132 is the answer

7 0
3 years ago
Read 2 more answers
Angle A is the complement of angle B.
love history [14]

Answer:

C) cos A=sin B

Step-by-step explanation:

A is complement of B: A+B=90⁰

Sin(A)=sin(90-B)=cos(B)

Cos(A)=cos(90-B)=sin(B)

So c)

5 0
4 years ago
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