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Sonbull [250]
3 years ago
15

-x- y=-4 -2x+y=-5 How do you it for solving eliminating

Mathematics
1 answer:
Ludmilka [50]3 years ago
7 0

Answer:

x = 3, y = 1

(3,1)

Step-by-step explanation:

Elimination is a method of solving systems where we add or subtract the two equations to "eliminate" one of the variables.

Take a look at our system. We have a -y and a +y. If we added those together, they would cancel!

-x- y=-4

-2x+y=-5   +

--------------

-3x + 0y = -9

It worked! No more y. Solve for x!

-3x = -9

<u>x = 3</u>

Plug x back in to get y.

-x - y = -4

-3 - y = -4

-y = -1

<u>y = 1</u>

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11111nata11111 [884]

Answer:

72 cupcakes

Step-by-step explanation:

Morgan can make 4 cupcakes with one cup of flour. She has 18 cups of flour and suppose she can make x cupcakes, then

1 cup of flour - 4 cupcakes

18 cups of flour - x cupcakes

Write a proportion:

\dfrac{1}{18}=\dfrac{4}{x}

Cross multiply:

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5 0
3 years ago
The LCM and the GCF of two numbers is 120 and 8 respectively. If the first number is 24, find the other number​
Ivanshal [37]

Answer: The other no. is 5

Step-by-step explanation: Let the other no. be x

x = LCM/First no.

x = 120/24 = 5

The other no. is 5

7 0
3 years ago
Mario fils out an information card. His ZIP code is 83628 His area code is 208. Which statement about the value of the 2 in 83.6
wlad13 [49]

Answer:

in the similar hundreds place except in 83.628 it is the the hundre'ths' place which is different

Step-by-step explanation:

6 0
3 years ago
1.) A triangle has two interior angle measures of 82º and 19º. Find the measure of
daser333 [38]

Answer:

79°

Step-by-step explanation:

A triangle has 180° in it so 180 - 82 =98- 19=79

4 0
3 years ago
Caroline has a movie card worth $75 that her grandfather gave to her for her birthday. After seeing her first movie, the card’s
faust18 [17]

Answer:

f(m) = 75-8m

Step-by-step explanation:

She began with $75.  After the first movie, she had $67 remaining; this means she spent

75-67 = $8

After the second movie, she had $59 remaining; she spent

67-59 = $8

After the third movie, she had $51 remaining; she spent

59-51 = $8

Each movie costs $8.  Letting m represent the number of movies, this gives us 8m.

Since she is spending money, we subtract this from the original amount, $75; this gives us

f(m) = 75-8m

3 0
3 years ago
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