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3 years ago

Plsss I wanna pass my math class

Mathematics

2 answers:

navik [9.2K]3 years ago

8 0

Answer:

Your answer should be the second one.

When you multiply everything in the parenthesis that's what your answer should come to.

grigory [225]3 years ago

4 0

Answer:

7y(-4x+5)

Explanation:

because 7y(-4x+5)=-28xy+35y

and the rest doesn't match

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VashaNatasha [74]

The answer is , c. 3.4 lol

6 0

3 years ago

Solve each system by the addition method.

bagirrra123 [75]

Answer:

(x, y) = (2, -1.5)

Step-by-step explanation:

x + 2y = -1

5x - 4y = 16

<=>

(2)x + (2)2y = (2)(-1)

5x - 4y = 16

<=>

2x + 4y = -2

5x - 4y = 16

<=>

7x = 14

<=>

x = 2

(*)x + 2y = -1

=> 2 + 2y = -1

=> 2y = -3

=> y = -1.5

=> (x, y) = (2, -1.5)

6 0

4 years ago

Use the quadratic formula to solve x2 + 2x - 120 = 0. Think about what other method could also be used to solve this equation. a

pshichka [43]

Answer:

x = 10 , -12

Step-by-step explanation:

Solution:-

- The given quadratic equation is to be solved using the quadratic formula. The general form of a quadratic equation is:

$ax^2 + bx + c =0$

Where, [ a , b and c are constants ]

- The quadratic formula is given as:

$x = \frac{-b+/-\sqrt{b^2 - 4*a*c} }{2a}$

- The given equation is:

$x^2 + 2x - 120 = 0$

Where, a = 1 , b = 2 , c = -120

- Solve using quadratic formula:

$x = \frac{-2+/-\sqrt{2^2 - 4*1*(-120)} }{2*1}\\\\x = \frac{-2+/-\sqrt{4 + 480} }{2}\\\\x = \frac{-2+/-(22) }{2}\\\\\\x = 10 , -12$

7 0

3 years ago

What is bigger 7/8 or 13/15?

erastovalidia [21]

The answer would be 13/15

8 0

3 years ago

What is the solution to 2.1m = 6.3?

Zanzabum

M=3 because you divide 2.1 into 6.3 and i goes in to it 3 times

8 0

4 years ago

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