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liubo4ka [24]
3 years ago
15

What is the value of a if (2a + 3) - 3/4 (4a - 8) = 7

Mathematics
1 answer:
Margaret [11]3 years ago
3 0
It would be x=2 becuz that equation simplified is 2x+3-3x+6=7
than it would be -x+9=7 and than subtract 7 and 9 -x=-2 divide x=2
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What is the volume of a hemisphere with a radius of 2.3 m, rounded to the nearest tenth of a cubic meter?
ANTONII [103]

Answer:25.5m^3

Step-by-step explanation:

radius(r)=2.3m

π=3.14

volume of hemisphere=2/3 x π x r^3

Volume=2/3 x 3.14x(2.3)^3

Volume=2/3 x 3.14 x 2.3 x 2.3 x 2.3

volume=(2x3.14x2.3x2.3x2.3) ➗ 3

Volume=76.40876 ➗ 3

Volume=25.5

3 0
3 years ago
What is the value of a, b, and c in the quadratic equation -2x^2+4x-3=0
amm1812
A = -2
b = 4
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6 0
3 years ago
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a computer and printer a totoal cost $1132 the cost of the computer is three times the cost of the ptinter
zavuch27 [327]
Use a system of equations

C+P=1132
3P=C

Substitute C in first equation as
3P+P=1132
Simplify
4P=1132
Solve
P=1132/4
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NOW SOLVE FOR C SUBSTITUTING P VALUE IN FIRST EQUATION

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3 0
2 years ago
Which equation could represent a circle with a center located at (11,-5)
Anon25 [30]
The standard equation of a circle is:

(x-h)^2-(y-k)^2=r^2 where (h,k) is the center and r is the radius.

We need to make an equation of a circle, whose center is (11,-5) with any radius. Therefore, substitute the value.


(x-h)^2-(y-k)^2=r^2 \\ (11,-5)=(h,k) \\ (x-11)^2-(y-5)^2=64

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6 0
3 years ago
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KonstantinChe [14]

Answer:

The answer is 22!!!!!!!

3 0
2 years ago
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