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pychu [463]
3 years ago
12

What is the result of adding these two equations 8x-4y=-4 -3x+4y=5

Mathematics
1 answer:
Sergeeva-Olga [200]3 years ago
6 0

Answer:

8x-4y=-4

-3x+4y=5

+

-----------------(adding equation)

5x=9

is a required answer

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Serenity picked 75% of the apples of a tree in her backyard. If she picked 30 apples, how many apples were on the tree to begin
Stells [14]

Given:

Serenity picked 75% of the apples of a tree in her backyard.

She picked 30 apples.

To find:

The number of apples on the tree in the beginning.

Solution:

Let x be the number of apples on the tree in the beginning.

Serenity picked 75% of the apples of a tree in her backyard.

Number of apples picked = 75% of x

                                           = \dfrac{75}{100}x

                                           = \dfrac{3}{4}x

She picked 30 apples.

\dfrac{3}{4}x=30

Multiply both sides by 4.

3x=4\times 30

3x=120

Divide both sides by 3.

x=\dfrac{120}{3}

x=40

Therefore, the number of apples on the tree in the beginning is 40.

3 0
3 years ago
A survey asked two age groups which summer sport they most preferred. The results are shown in the table below.
muminat

Answer:

6.98%

Step-by-step explanation:

To find relative frequency we divide frequency with the total number participants in that age bracket

Total number of participants age 10-19=172.....................given in the table

The frequence for those who ski at age 10-19=12---------------given in table

Relative frequency= 12/172 = 0.0697

Expressed as a percentage= 0.06976×100 =6.98%

4 0
3 years ago
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Sara goes on a slingshot ride in an amusement park. She is strapped into a spherical ball that has a radius of 3·10^2 centimeter
kondaur [170]
To solve for the volume of a spherical ball, we use the formula,

                                               V = (4<span>πr^3)/3

The given radius of 3x10^2 centimeters converts to 3 meters. Solving for the volume,
 
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</span>Thus, Sara is trapped in a spherical ball with a volume of 36<span>π m^3.
</span><span>

</span>
8 0
3 years ago
Factor Completely<br><br> 2x²-4x+6
vagabundo [1.1K]


okay well usually what I would tell you would be to use the ABC method. you would multiply A (2) by C (6) to get twelve. so you need two numbers that multiply to twelve and add to -4 (the B value). but there are no numbers that fit this description so you have to use the GCF method instead

for this method you must find the GCF for all three numbers which in this case is 2.        2(x^2-2x+3) all these numbers are now prime so this is the factored form

7 0
3 years ago
Please help me I need it now
Arada [10]

Answer:

I'm pretty sure the answer is B

Step-by-step explanation:

sorry if I'm wrong

3 0
3 years ago
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