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Tomtit [17]
2 years ago
11

Solve each system by substitution. 1) y= 2x - 16 y= -2

Mathematics
1 answer:
DochEvi [55]2 years ago
7 0

Answer:

x = 7

Step-by-step explanation:

Solve equation [2] for the variable  y

[2]    y = - 2

Plug this in for variable  y  in equation [1]

[1]    (-2) - 2x = -16

[1]     - 2x = -14

Solve equation [1] for the variable  x

[1]    2x = 14

[1]    x = 7

Solution:
y = -2
x = 7

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Javier works each weekend at an animal shelter. He earns $8 an hour. He is saving his earnings to go on a ski trip that costs $1
Harman [31]

Answer:

Step-by-step explanation:

She earns $8/hour

And she works weekend only

He is saving his earning to go for ski and it cost $190

For him to save $190, let know the hours he is going to work

He earns $8/hour and need $190,

Then he is going to work for

190/8=23.75hours

At least, he needs to work for 24hours and since the 24hours is in a day then, Becca his wrong, he doesn't need extra to work extra 6hours.

We are not told if he need to buy something or do something else we are only told he needs $190 for the trip

4 0
3 years ago
I dont know how to find x​
Verdich [7]
Simplify both sides:

x
—- = -9
4

now isolate the variable (x):

x= -9 • 4
x= -36
4 0
3 years ago
Simplify the expression, write in standard and exponential form.
timama [110]

Answer:

(5x {y}^{2} ) ^{7}  =  {5x}^{7 } \times  {x}^{7}   \times  {y}^{14}  =  {5x}^{14}    {y}^{14}

5 0
2 years ago
Read 2 more answers
A house on the market was valued at $245,000. After several years, the value increased by 9%. By how much did the house's value
aniked [119]

We are given that a house had a value of $245000 and its value was increased by 9%. To determine how much is this value increase in dollars we need to multiply the value of the house by 9/100. We get this:

245000\times\frac{9}{100}=22050

Therefore, the increase in dollars is $22050. Now, to determine the current value we need to add the increase to the previous value, we get:

245000+22050=267050

Therefore, the current value of the house is $267050.

6 0
9 months ago
What happens when you add and subtract integers
Furkat [3]
When u add it stays the same but for subtraction u change the sign.

Example: 2- (-5)=7
5 0
2 years ago
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