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4 years ago

How many solutions will the following system of equations have? y= -4.2 + 2 y=-4x – 6

Mathematics

1 answer:

Katena32 [7]4 years ago

3 0

Answer: one solution

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Can some please help me I will mark u brilliant

brilliants [131]

Question 2: -4/3

Question 3: -7/20

6 0

3 years ago

How much would 3 yd of lumber cost if each foot costs $3.75

Shtirlitz [24]

Answer:

$33.75

Step-by-step explanation:

3 ft are in a yd so 9 ft are in 3 yd. Then you multiply 9 by 3.75 which brings you to the answer $33.75.

5 0

3 years ago

Help will mark Brainliest!!

Marta_Voda [28]

Answer:

1/20

Step-by-step explanation:

1/4 = 0.25

0.25 / 5 = 0.05

0.05 as a fraction = 5/100

simplified

5 / 5 = 1

100 / 5 = 20

1/20

5 0

3 years ago

Would you classify 165 as a perfect square, perfect cube, both, or neither

svlad2 [7]

Answer:

neither

Step-by-step explanation:

because the square root is not whole number and neither is the cube root of 165. so it is neither

5 0

4 years ago

Read 2 more answers

I need help with my geometry homework! Thank you! I will mark brainliest!!!!

Firlakuza [10]

Answer:

The first choice is the one you want

Step-by-step explanation:

Use geometric means to solve for a first. The formula is

$8^2=15a$ and 64 = 15a and a = 64/15

That one was quite easy. Finding b is a bit more difficult.

The formula for finding b is

$\frac{a}{b}=\frac{b}{15+a}$

Solving for b:

$b^2=a(15+a)$

Filling in we have

$b^2=15(\frac{64}{15})+(\frac{64}{15})^2$ and

$b^2=64+\frac{4096}{225}$ and

$b^2=\frac{18496}{225}$ so b = 136/15

3 0

4 years ago