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3 years ago

What is 3(m + 4) -12=-15

Mathematics

1 answer:

Crazy boy [7]3 years ago

4 0

Answer:

m equals -5

Step-by-step explanation:

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Is 487 closer to 480 or to 490

jek_recluse [69]

Answer:

490

Step-by-step explanation:

because the 7 (last digit) is not less than 5, it rounds up to 490

6 0

3 years ago

Read 2 more answers

The equation x^2/121 + y^2/1. what points are the vertices of the eclipse

Alla [95]

Answer:

$(-11,0)$ and $(11,0)$ .

Step-by-step explanation:

The given ellipse has the equation:

$\frac{x^2}{121}+\frac{y^2}{1}=1$

This can be rewritten as

$\frac{x^2}{11^2}+\frac{y^2}{1^2}=1$

We compare this to the general equation of the ellipse:

$\frac{x^2}{a^2}+\frac{y^2}{b^2}=1$

We have $a=11$ and $b=1$

The vertices of this ellipse are at $(-a,0)$ and $(+a,0)$ .

Therefore the vertices of this ellipse are at $(-11,0)$ and $(11,0)$ .

The correct choice is A.

3 0

3 years ago

Select any equations that have the same solution set as:

aliya0001 [1]

Answer: 6+4x=26, 4x=20

Step-by-step explanation: 6+4x=20 is the initial equation but completely multiplied by two, so you can know without solving that it is equivalent.

If you solve the equation, 2x+3=13 (subtract 3 from both sides)

2x=10 (divide both sides by 2)

x equals 5.

if you plug in 5 as x to 4x=20, you get 20=20, which is a true statement, so this choice is also correct. You could also solve to prove x equals 5 in this equation as well. Divide 20 by 4 and you get x=5.

8 0

2 years ago

Helppp please!!!!!!!!!!!!!

GrogVix [38]

Answer:

423.9

Step-by-step explanation:

Area 1 = 3.14 (16²) = 803.84

Area 2 = 3.14 (11²) = 379.94

803.84 - 379.94 = 423.9

4 0

3 years ago

Read 2 more answers

A chemist pumps hydrogen gas (H2) from a tank

son4ous [18]

Answer:

if it is a multiple choice question

the answer is 1.47 mol H2

Step-by-step explanation:

4 0

4 years ago