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pav-90 [236]
3 years ago
7

2x minus y equals 6, x plus y equals negative 3

Mathematics
1 answer:
kap26 [50]3 years ago
8 0

Answer:

y=-4, x=1

Step-by-step explanation:

2x-y=6                  x+y=-3

2(-3-y)-y=6            x=-3-y

-6-2y-y=6              x=-3+4

-3y=12                    x=1

y=-4

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I’ll mark brainlest! pls help! :/
alexandr1967 [171]

Answer:

9\sqrt{2}

Step-by-step explanation:

d = \sqrt{(5-(-4)^2+(5-(-4)^2 \\

d = \sqrt{(9)^2+(9)^2

d = 9\sqrt{2}

6 0
3 years ago
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Two buses leave a corner at the same time. One bus goes uptown at a constant rate of 25 mph, the other downtown at a rate of 15
vlada-n [284]

The rate of separation = 25 + 15 = 40 mph


speed = distance / time

40 = 30 / t


t = 30/40 hour = 45 minutes


Its C.

5 0
3 years ago
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A water balloon has a diameter of 6 inches. How many cubic inches of water does it contain when it is 3/4 full
Travka [436]
Below are the choices that can be found from other sources:

A) 36 pi 
<span>B) 6 pi </span>
<span>C) 27 pi </span>
<span>D) 216 pi </span>
<span>E) 48 pi
</span>
A sphere's volume is (4/3)*pi*r^3. 
<span>The diameter of the balloon is 6 inches. The diameter is twice the radius. The radius is 3 inches. </span>

<span>(4/3)*pi*3^3 = 36 * pi </span>

<span>But the balloon is only 3/4 full. So </span>

<span>36 * (3/4) * pi = 27 * pi. </span>

<span>The balloon has 27 pi cubic inches of water.</span>
7 0
3 years ago
If the area of a triangle is 28in2 and the height is 8 inches, determine the length of the base.
klemol [59]

area of triangle formula = ½ × B × H

28in2 = ½ × B × (8)

28in2 = 4 × B

28 ÷ 4 = B

Therefore, length of base = 7 inches

i hope my solution helps :))

6 0
3 years ago
What is 823,563 rounded to the nearest ten thousand? (1 poin<br> 820.000<br> 325.000<br> 330.000
valentina_108 [34]

Answer: 820,000

823,563 rounded to the nearest ten thousand is 820,000

3 0
3 years ago
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