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2 years ago

Please help will mark brainliest:)

Mathematics

1 answer:

Temka [501]2 years ago

5 0

It’s .020202 but you can put .02

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What is 28- 12.5% decrease???

OLEGan [10]

Ok so I assume
28 and decreased by 12.5%

percent means partst out of 100 so
12.5%=12.5/100=0.125
first find 12.5% of 28 then subtract
0.125 times 28=3.5
decrease
28-3.5=24.5

answer is 24.5

3 0

3 years ago

The function C(x)=−20x+1681 represents the cost to produce x items. What is the least number of items that can be produced so th

Reptile [31]

Answer:

<em>The least number of items to produce is 41</em>

Step-by-step explanation:

<u>Average Cost</u>

Given C(x) as the cost function to produce x items. The average cost is:

$\displaystyle \bar C(X)=\frac{C(x)}{x}$

The cost function is:

$C(x) = -20x+1681$

And the average cost function is:

$\displaystyle \bar C(X)=\frac{-20x+1681}{x}$

We are required to find the least number of items that can be produced so the average cost is less or equal to $21.

We set the inequality:

$\displaystyle \frac{-20x+1681}{x}\le 21$

Multiplying by x:

$-20x+1681 \le 21x$

Note we multiplied by x and did not flip the inequality sign because its value cannot be negative.

Adding 20x:

$1681 \le 21x+20x$

$1681 \le 41x$

Swapping sides and changing the sign:

$41x \ge 1681$

Dividing by 41:

$x\ge 41$

The least number of items to produce is 41

8 0

2 years ago

Miranda has earned scores of 20, 22, 18, and 24 on her last four math quizzes. What score will she need to earn on the fifth qui

BigorU [14]

Answer:

Step-by-step explanation:

20 + 22 + 18 + 24 + 16 = 100

100/5= 2O

hopes this helps sorry for the late answer I just want others to get the correct answer.

4 0

2 years ago

21) Rearrange the formula c2 = a2 + b2 for b.

Anvisha [2.4K]

C2 + a2 +2 = b
Would be the new formula

8 0

3 years ago

What is the domain of (49,infinity) in inequality form?

valentinak56 [21]

$(a,b)=\{x|a\ \textless \ x\ \textless \ b\}$

In our case:

$(49,\infty) \Rightarrow 49\ \textless \ x$

3 0

2 years ago