3 years ago

Simplify each expression 1. -7(6v+4)+3v(v+3) 2. -3k(2k-3)+7(k-7)

Mathematics

2 answers:

Katyanochek1 [597]3 years ago

7 0

Answer:

1. 3v^2 - 33v -28

2. -6k^2 + 16k - 49

Step-by-step explanation:

1. (-7 x 6v) + (-7 x 4) + (3v x 1v) + (3v x 3)

-42v-28+3v^2+9v

3v^2 + 9v - 42v -28

3v^2 - 33v -28

2. (-3k x 2k) + (-3k x -3) + (7 x 1k) + (7 x -7)

-6k^2+9k+7k-49

-6k^2 + 16k -49

Olegator [25]3 years ago

3 0

1. -7(6v+4)+3v(v+3)
-42v-28+3v ²+9v
-33v-28+3v ²
=3v ²-33v-28

2. -3k(2k-3)+7(k-7)
-6k ²+9k+7k-49
= -6k ²+16k-49

You might be interested in

Write 17% as a decimal

netineya [11]

0.17

yuh this is correct lol

5 0

3 years ago

by selling a mobile set of rupees 4800 Ramesh gains 25% how much will have we gained by selling it at rupees 4080

Crank

Answer:

240

Step-by-step explanation:

Gain=25%

Gain=selling price - cost price

Gain = ((selling price - cost price )× 100)/ cost price

25c=(4800-c)100

25c=480000-100c

125c=480000

cost price = 3840

second statement

The selling price was 4080

Cost price 3840

therefore

Gain=selling price - cost price

Gain = 4080-3840

=240

5 0

3 years ago

(Pls help) I need help finding x!

Ray Of Light [21]

Answer:

x ≈ 46°

Step-by-step explanation:

Since the triangle is right use the sine ratio to solve for x

sinx = $\frac{opposite}{hypotenuse}$ = $\frac{10}{14}$ , hence

x = $sin^{-1}$ ( $\frac{10}{14}$ ) ≈ 46°

8 0

3 years ago

Find the value of x. <br> A. 2 <br> B. 3 <br> C. 4 <br> D. 5

masya89 [10]

The correct answer is three.

7 0

3 years ago

Question 2 Mr. Smith is buying two types of gift cards to give as prizes to employees at a company picnic. He will buy restauran

ella [17]

Answer: He can buy 5 restaurant gift cards and 7 movie gift cards

Step-by-step explanation:

7 0

3 years ago