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Rus_ich [418]
3 years ago
13

Help pls Use the substitution method to solve the system of equations. Choose the

Mathematics
1 answer:
AURORKA [14]3 years ago
6 0
If I’m using substitution the answer is A
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Cara has $25 to buy dry pet food and treats for the animal shelter. A pound of dog food cost $2 and treats are $1 apiece. If she
iris [78.8K]
So 2×9=18 so she spend $18 on the pounds of food so 25-18=7 so the nuber of treats she can buy 7 treats for the animal shelter
3 0
3 years ago
Suppose the average yearly salary of an individual whose final degree is a masters is $46 thousand less than twice that of an in
zepelin [54]

Answer:

  • <em><u>average yearly salary of an individual whose final degree is a masters:</u></em><u> $ 66 thousand</u>

<u></u>

  • average yearly salary of an individual whose final degree is a bachelors:<u> $ 56 thousand</u>

Explanation:

You can set a system of equation using the following steps:

1. Name the variables:

  • average yearly salary of an individual whose final degree is a masters: x

  • average yearly salary of an individual whose final degree is a bachelors: y

2. Set the equations that relate the variables:

  • the average yearly salary of an individual whose final degree is a masters is $46 thousand less than twice that of an individual whose final degree is a bachelors:

        equation (1): x = 2y - 46

  • combined, two people with each of these educational attainments earn $122 thousand:

         equation (2): x + y = 122

3. Solve the system:

  • x = 2y - 46 . . . equation (1)
  • x + y = 122 . . . equation (2)

Substitute equation (1) into equation (2)

  • 2y - 46 + y = 122

Solve for y:

  • 3y = 122 + 46
  • 3y = 168
  • y = 168 / 3
  • y = 56 (this means that the average yearly salary with a bachelors degree is $ 56 thousand).

Subsitute the value on y in equation 1, to find the value of x:

  • x = 2y - 46 = 2(56) - 46 = 112 - 46 = 66.

Thus, the average yearly salary of a person with a masters degree is $ 66 thousand.

4 0
3 years ago
Easy promise but I'm not too smart
Brrunno [24]
I can do them but do i solve for y?
4 0
2 years ago
Mei spent $66 buying fabric that costs $7.50 per yard. how many yards of fabric did mei buy?
Stella [2.4K]

Answer:

If mei spent $66 buying fabric that costs $7.50 per yard then they would have bought 8.8 yards of fabric. Take the amount spent and divide it by the price per yard. 66/7.50=8.8 yards

Step-by-step explanation:


3 0
3 years ago
Read 2 more answers
What is the area of this figure ?
PIT_PIT [208]
<span> Remember that what you must do for this case is to calculate the area of the parallelogram and add it to the area of the rectangle.
</span>  Palelogram area:
  Knowing the base and the height, the area of the parallelogram is calculated by its formula: 
  A1 = b * h
  We have then
  b = root ((- 4 - (- 10)) ^ 2+ (2-2) ^ 2) = 6
  h = root ((- 7 - (- 7)) ^ 2+ (3-2) ^ 2) = 1
  A1 = (6) * (1) = 6 units ^ 2
  Rectangle area
  A2 = L * W
   We have then:
  L = root ((1 - (- 2)) ^ 2 + (- 3 - (- 4)) ^ 2) = 3.16227766
  W = root ((- 4 - (- 2)) ^ 2+ (2 - (- 4)) ^ 2) = 6.32455532
  A2 = (3.16227766) * (6.32455532)
  A2 = 20 units ^ 2
  The total area is the sum of both ares:
  A = A1 + A2
  A = 6 + 20
  A = 26 units ^ 2
  Answer:
  the area of this figure
  A = 26 units ^ 2


5 0
3 years ago
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