2 years ago

If f(x)=-2x+7, what is f(1/2x+3) equal to?

Mathematics

1 answer:

Bumek [7]2 years ago

5 0

So just sub 1/2x+3 for all x’s in the equation and it is equal to -1x+10

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1. (a) Show that 487 is prime. (b) Find the prime factorization of 2922. Show all working.

Tresset [83]

Answer:

Step-by-step explanation:

487 is a prime, because 487 is only divided by 1 or by itself

5 0

2 years ago

A 15 ounce alloy containing 30% gold was mixed with an alloy containing 5% gold to get an alloy containing 20% gold. How many ou

Studentka2010 [4]

Answer:

4.5 % alloy

Step-by-step explanation:

Let x = amt of 30% alloy

The resulting total is to be 25 oz, therefore:

(25-x) = amt of 5% alloy:

A typical mixture equation:

.30x + .05(25-x) = .20(25)

.30x + 1.25 - .05x = 5 .30x - .05x = 5 - 1.25

.25x = 3.75

x = 3.75%2F.25

x = 15 oz of 30% alloy required

then

25-15 = 10 oz of 5% alloy:

Check solution

.30(15) + .05(10) = .20(25)

4.5 + .5 = 5

4 0

3 years ago

In a batch of 960 calculators, 8 were found to be defective. What is a probability that a calculator chosen at random will be de

DaniilM [7]

Out of 960 calculators, 8 were found be to defective

Probability:
$\frac{8}{960}$
0.00833...
As a Percent:
0.00833....× 100
0.833%
To the nearest tenth of percentage:
0.833% ≈ 0.8%

8 0

3 years ago

Read 2 more answers

It is not possible to divide 5 by 0 because there is no number you can___ by 0 and get 5 .

elixir [45]

Answer:

multiply

Step-by-step explanation:

5 0

2 years ago

What is the decimal for of -4 7/8?

asambeis [7]

-4 7/8 = -4.875 <====

3 0

3 years ago