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3 years ago

Please Help me with these!

Mathematics

1 answer:

aleksandrvk [35]3 years ago

4 0

Answer:

30% and $30

Step-by-step explanation:

Well 240-168 is 72

72 is 30 percent of 240 because

240* x/100 = 72

24000x=7200

x=.3

.3 is percentage is 30%

We can check by doing

240*.3= 72

there is a 30% decrease

Next question

If the total price of something is 31.20 with a 4% tax we do

x * .04 + x = 31.20

because 4% added to the price of that object is 3.20

1.04x = 31.20

x= 30

we can check by doing

30*.04+ 30= 31.2

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Write each produce using exponents. DO NOT SOLVE. use ^ to signify the exponent. eg, 13 ⋅ 13 = 13^2

Gnom [1K]

Answer:

Step-by-step explanation:

5^6

6 0

3 years ago

Read 2 more answers

The manufacturer of computers spends $500 to make each computer and sells them for 800. The manufacturer also has fixed costs ea

ryzh [129]

Answer:

C(x) = 5700 + 500x

Step-by-step explanation:

Total cost = fixed cost + variable cost

Fixed cost are cost that do not change in the process of production such as machineries, furnitures & fittings.

Variable cost are cost that changes with production such as cost of raw material, cost of labor.

From the question:

Fixed cost= $5,700

Cost per unit of computer = $500

If x number of computers are produced in a month

Variable cost = 500x

Total cost = fixed cost + variable cost

C(x) = 5700 + 500x

Where,

C(x) = total cost

5700= fixed cost

500x= variable cost

3 0

4 years ago

Read 2 more answers

1. There are apples, bananas, and pears in a basket. The probability of randomly picking an apple is to

Tamiku [17]

Help me I will help you

7 0

4 years ago

Here goes another question: 4/5%9/10 and please if you can with procces

love history [14]

When you divide a fraction by another fraction, it is the same thing as multiplying that fraction by its reciprocal.

The reciprocal is the 'flipped' version of a fraction where the numerator becomes the denominator and the denominator becomes the numerator.

for example, the reciprocal of 9/10 is 10/9

Knowing this information 4/5÷9/10 is the same as 4/5×10/9

Now we can solve...

$\frac{4}{5} * \frac{10}{9} = \frac{40}{45} = \frac{8}{9}$

Answer= 8/9

7 0

4 years ago

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A researcher would like to estimate p, the proportion of U.S. adults who support recognizing civil unions between gay or lesbian

SOVA2 [1]

Answer:

(b) 4,445

Step-by-step explanation:

If the researcher would like to be 95% sure that the obtained sample proportion would be within 1.5% of p (the proportion in the entire population of U.S. adults), what sample size should be used?

Given a=0.05, |Z(0.025)|=1.96 (check standard normal table)

So n=(Z/E)^2*p*(1-p)

=(1.96/0.015)^2*0.5*0.5

=4268.444

Take n=4269

Answer:(b) 4,445

3 0

3 years ago