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kati45 [8]
3 years ago
14

PLEASE PLEASE HELP SOLVE THE EQUATION USING ELIMINATION 3x+8y=-5 -2x+2y=18

Mathematics
1 answer:
frosja888 [35]3 years ago
5 0

Answer:

Step-by-step explanation:

3x+8y=-5

-2x+2y=18

Ok, so you want to get either x or y to cancel out so lets multiply the first equation by 2 and the second equation by 3.

6x+16y=-10

-6x+6y=54

Now x can cancel out. The new equation is:

22y=44

y=2

Now you input 2 into one of the original problems.

-2x+2(2)=18

-2x+4=18

Now subtract 4 from both sides.

-2x=14

Divide

x=-7

Now check your answer.

-2(-7)+2(2)=18

14+4=18

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Ron gets $5 on the first day at work, the square of that amount on the second day, and three times the amount of the second day
Sedaia [141]

Answer:

$75

Step-by-step explanation:

he got 75

3 0
3 years ago
Simplify: 11y-110/50-5y
alexandr1967 [171]
<h2>Answer:</h2>\frac{11y-110}{50-5y}=-\frac{11}{5}

<h2>Explanations:</h2>

Given the following expression show below;

\frac{11y-110}{50-5y}

Factor out the GCF from both the numerator and denominator

\frac{11(y-10)}{5(10-y)}

This can also be expressed as;

\begin{gathered} \frac{11(-10+y)}{5(10-y)} \\ \frac{-11(10-y)}{5(10-y)} \end{gathered}

Cancel out the common expression

\frac{-11\cancel{(10-y)}}{5\cancel{(10-y)}}=-\frac{11}{5}

Hence the simplified form of the expression is -11/5

7 0
1 year ago
Translate this sentence into an equation.
kakasveta [241]

Answer:

21+j=55

Step-by-step explanation:

It says sum, which means to add(+). So you add 21 and j (21+j) and that equals 55 (=55). Then you add all the pieces together and you get 21+j=55

7 0
3 years ago
Can u help this helpless 9th grader ?
nexus9112 [7]

Answer:

y = 4x + 32

Step-by-step explanation:

Given: Temperature at sunrise = 32°F

y is the temperature after x hours of sunrise

Temperature change is 4°F/hour.

The equation of a line in slope intercept form is given by

y = mx +c

where m is the slope, which is the change in value of y to the value of x

and c is the value of y at x = 0

At sunrise, x =0 and y =32

∴ c = 32

Also we see that the change in temperature to that of time is 4/1 = 4

∴ m = 4

Substituting the values of m and c in the equation of line, we have

y = 4x +32


7 0
3 years ago
Read 2 more answers
284.115 simplified in to a number
Fudgin [204]

Answer:

284

Step-by-step explanation:

Really easy dude?

3 0
3 years ago
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