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3 years ago

Hi! i don’t really understand this question. if someone could help me i’d appreciate it!

Mathematics

1 answer:

Shkiper50 [21]3 years ago

3 0

Answer:

Step-by-step explanation:

cute it into separate parts then add the areas together

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The sum of two numbers is 24. The difference is 15. What are the two numbers?

tatiyna

The numbers are "x" and "y",
we suggest this system of equations.
x+y=24
x-y=15
solve by reduction method.
x+y=24
x-y=15
-----------------
2x=39 ⇒x=39/2=19.5

x+y=24
-(x-y=15)
-------------------
2y=9 ⇒y=9/2=4.5

The numbers are 19.5 and 4.5

To check
19.5+4.5=24
19.5-4.5=15

3 0

4 years ago

What is the product?

sweet-ann [11.9K]

Answer:

Step-by-step explanation:

(2x-3)(4x+5)

=2x(4x+5)-3(4x+5)

=8x^2+10x-12x-15

=8x^2-2x-15

4 0

3 years ago

Read 2 more answers

Please answer asap!!

sesenic [268]

Answer:

-9

Step-by-step explanation:

-3 times -3 = -9.

7 0

3 years ago

Which of the following is a multiple of 5

adoni [48]

Answer:

5, 10, 15, 20, 25, 30,...

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

A bird flies 61/2 mi in 20 min.

schepotkina [342]

$\frac{61/2}{20} = \frac{x}{81/8}$
multiply the 2nd fraction by 8/8 to get rid of the 8 in the denominator:
$\frac{61/2}{20} = \frac{8x}{81}$
simplify the 1st fraction by multiplying by 2/2:
$\frac{61}{40} = \frac{8x}{81}$
now, you can cross-multiply:
$61*81=40*8x$
$4941=320x$
$x=\frac{4941}{320}$ or $15 \frac{141}{320}$

8 0

4 years ago