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Mila [183]
3 years ago
13

-7a-10=20-3a please show work help

Mathematics
1 answer:
olga_2 [115]3 years ago
7 0
-7a-10=20-3a

Combine like terms:
-4a -10 = 20
-4a = 30

Solve for a:
a =  -\frac{30}{4} = -7.5

Your answer: a = -7.5
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Onah bicycled 12 miles in 4 hours. What is the unit rate
zmey [24]

Answer:

Miles per hour

Step-by-step explanation:

And if you want to know the speed it's 3 miles per hour.

6 0
2 years ago
the sphere at the right fits snugly inside a cude with 14in edges. what is the approximate volume of the space between the spher
ella [17]

Answer:Find the vol of the sphere:

radius of the sphere = 3 in

V = %284%2F3%29%2Api%2A3%5E3

V = 97.858

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216 - 97.858 = 118.142 cu/in

Step-by-step explanation:

6 0
2 years ago
Find the equation f(x) = a(x - h)2 + k for a parabola containing point (3, 6) and having (1, -2) as a vertex. What is the standa
nlexa [21]

f(x) = 2 x^{2} -4x

Step-by-step explanation:

Step 1 :

Given, f(x) = a(x - h)2 + k

Point on the parabola is (3, 6)

Vertex (h,k) = (1,-2)

Step 2:

Substituting the vertex in the equation we have,

f(x) = a(x-1)2 -2

Substituting the point (3,6) in this we have,

6 = a(3-1)2 - 2 => 6 = 4a -2

=>  4a = 8 => a = 2

Step 3 :

Substituting the value for a and the vertex in the given equation we have

f(x) = 2(x-1)2 -2 = 2(x2 - 2x + 1) -2 = 2x2 - 4x

=> f(x) = 2 x^{2} -4x  which is the standard form

8 0
3 years ago
I KNOW IT IT LONG BUT PLEASE HELP ME PLEASE
S_A_V [24]
See I have had bad days in school Bc of so much homework and writing but thissssss
3 0
3 years ago
Can I get some help on 2,4,20,40, and 50 please
scoundrel [369]

Answer:

2. power

4. tenth

20. hundred-thousandth

40. 5.063

50. 67/10

Step-by-step explanation:

20. If the underlined digit is the zero, the answer is "hundred-thousandth." It's hard to tell from the picture if zero is the underlined digit.

40. 5 and 63/1000 = 5 + 63/1000 = 5 + 0.063 = 5.063

50. 6.700 = 6700/1000 = 67/10

5 0
3 years ago
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