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vredina [299]
4 years ago
11

The sum of two numbers a is 57. The difference between the two numbers is 15. What are the two numbers?

Mathematics
1 answer:
allochka39001 [22]4 years ago
7 0
Okay let's set this up as an equation
x + y = 57
y - x = 15

Let's solve this by substitution.
Change y - x = 15 to y = 15 + x.

x + (15 + x) = 57
x + 15 + x = 57
2x + 15 = 57
2x = 42
x = 21

Okay so the first number is 21, let's plug that into the first equation.


x + y = 57
21 + y = 57
y = 57 - 21
y = 36
the two numbers are 21 & 36 :)
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Please answer this correctly
Elina [12.6K]

Answer:

5

Step-by-step explanation:

There are two ways you can solve this. First is to just count all the numbers in the list given that are within the range 15-19. This is an inclusive range meaning the numbers 15 and 19 are a part of it. The second method is to count how many numbers are in the list given and count all the numbers that have already been put on the table. There are 19 total numbers, and 14 have already been counted. If you subtract you are left with 5 numbers that are within the range. So the answer is 5.

5 0
3 years ago
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What is the area of the figure?<br> 7 in.<br> 8 in.<br> 7 in.<br> 8 in.<br> ,<br> 4 in.<br> 16 in.
Alex17521 [72]

Answer:

Step-by-step explanation:

50

5 0
3 years ago
Help it due ASAP....
VikaD [51]
The answer is b because those are angles on the opposite side of the transversal
7 0
3 years ago
What is the sum of an infinite geometric series if a1 = 144 and r = 1⁄4?
Brilliant_brown [7]

Answer:

D

Step-by-step explanation:

The sum to infinity of a geometric sequence is

sum to infinity = \frac{a_{1} }{1-r}

here a_{1} = 144 and r = \frac{1}{4}, hence

sum = \frac{144}{1-\frac{1}{4} }

      = \frac{144}{\frac{3}{4} }

      = \frac{144(4)}{3} = 192 → D

7 0
3 years ago
F(4) =
Alex787 [66]

Function f(4) = -10 and if g(x) = 2 , x = 0.

To find f(4), we will observe the graph of f(x).

According to the graph of f(x),

when x = 4, y is -10 which means when x is 4 value of f(4) is -10.

To find the value of x when g(x) is 2, we will observe the graph of g(x).

According to the graph of g(x),

when y = 2, x is 0 which means that when x is 0, the value of g(x) is 2.

Hence, f(4) is -10 and x = 0 when g(x) = 2.

To learn more about Function here:

brainly.com/question/14418346

#SPJ1

7 0
1 year ago
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