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jeyben [28]
3 years ago
5

Which value of a below solves the equation: 3a +1=-a +3? (1) -6 (2) 8 (3) -1 (4) 5

Mathematics
1 answer:
natka813 [3]3 years ago
6 0

Answer:

None, the answer should be a=1/2

Step-by-step explanation:

Lets solve the system by ourselves.

Lets sum 'a' variable to both sides of equality sign.

We have

4a+1=3

Now lets subtract 1 to both sides of equality sign

4a=2

we obtain a=1/2.

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Suppose that 62 percent of the graduates from your high school go on to four-year colleges, 15 percent go on to two-year college
inn [45]

Answer:

b) .474

Step-by-step explanation:

If 62% go to a four-year college, that means that those who don't represent 38% of the high-school graduates.

You pick up someone who is NOT going to a four-year college (so, he's among the 38%)... what's the chance he's in the 18% of the whole high-school graduates population that found a job?

To calculate that probability, we have to divide 18% by 38%.

P = 18% / 38% = 0.4736, so 0.474

Since we are sure he doesn't go to a four-year college, there's 47.4% of chances he finds a job.

3 0
3 years ago
7r-5r+8=9r+8-r translate to an equation, then solve
pshichka [43]

Answer:

r=0

Step-by-step explanation:

7r-5r+8=9r+8-r

This is already an equation

Combine like terms

2r+8 = 8r+8

Subtract 2r from each side

2r-2r +8 = 8r-2r +8

8 =6r+8

Subtract 8 from each side

8-8 = 6r+8-8

0 = 6r

Divide by 6

0/6 = 6r/6

0 =r

7 0
3 years ago
Jordan bought 9/16 of a pound of sunflower seeds and divided them evenly into 9 snack bags for his lunch. What is the weight of
nikitadnepr [17]
(9/16)*(1/9) = 1/16 . . . . . . 1st selection
5 0
3 years ago
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Corey is 66 inches tall. At noon, Corey casts a shadow 108 inches long. At the same time, a tree casts a shadow 216 inches long.
Usimov [2.4K]
<span>This is the term used to describe economic systems in which the basic economic questions are answered based on a socially, pre-established way.</span>
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Quick help please!
pashok25 [27]
Congruent triangles are all the same. Given that the faces of a triangular pyramid are congruent then all its faces are the same. It is also good to note that this pyramid has 4 faces. Given that the surface area of the pyramid is 372m^2, the area of one face will be:
area=(total area)/(number of faces)
=372/4
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4 0
3 years ago
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