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2 years ago

PLEASE HELP... What do you do when none of the variables cancel out while solving systems by elimination?

Mathematics

1 answer:

Vitek1552 [10]2 years ago

3 0

Answer:

multiply one or both of the equations until a variable can cancel out

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State the difference between Map, Globe, and Plan

kati45 [8]

Answer:

The globe represents the whole earth, whereas a map may represent the whole earth or just a part of it. A globe can be used to get a broad-level picture of the world while maps provide more specific information about different places.

Step-by-step explanation:

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2 years ago

Find the value for x

harkovskaia [24]

Answer:

x=45

Step-by-step explanation:

add (3x-9)+30+24=180

subtract 30 and 24 from both sides

(3x-9) = 126

+9 on both sides

3x=135

divide by 3 on both sides

x=45

7 0

2 years ago

Directions: Use a proportion to solve the problem.

spin [16.1K]

So, since she weights 6 times more on earth, say for every lb on the moon is 6lbs on earth then.

now, if 1lb on the moon is 6lbs on earth, how much is 90 earth lbs on the moon?

$\bf \begin{array}{ccll}
moon&earth\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
1&6\\
m&90
\end{array}\implies \cfrac{1}{m}=\cfrac{6}{90}\implies \cfrac{1\cdot 90}{6}=m$

5 0

3 years ago

What is the value of p so that the expression 4(5 + n) is equivalent to 4(n + p) ?

Gennadij [26K]

Answer:

Step-by-step explanation:

4(5+n)=4(n+p)

20+4n=4n+4p

4p=20

p=20/4

p=5

8 0

2 years ago

Read 2 more answers

Find the height of the triangle.

wel

Answer:

Step-by-step explanation:

BCD is a right triangle. The Pythagorean Theorem applies; a^2 + b^2 = c^2, with c being the hypotenuse. a^2 + 9 = 25, so a^2 = 16, so a = 4

3 0

2 years ago