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ycow [4]
3 years ago
11

You estimate that there are 80 marbles in a jar. the actual amount is 76 marbles. find the percent error. round to the nearest t

enth of a percent if necessary.
Mathematics
2 answers:
Afina-wow [57]3 years ago
8 0
\frac{actual - estimated}{actual}
= \frac{76 - 80}{76}
= \frac{-4}{76}
= -0.0526
= -5.26%
≈ -5.3%
yKpoI14uk [10]3 years ago
7 0
76/80

Just divide 76 out of 80 and round it to the nearest hundredth Or at least that’s what I think
You might be interested in
on the same bus, 1/3 of the French speakers can also speak German. how many people can speak both German and French
Alenkinab [10]
It's easy if you just break it into pieces...

1/3 OF the 4/9 French OF people on the bus (27) also speak German.

Of= Multiply

1/3*4/9*27/1=4 speak French AND German




3 0
3 years ago
Simplify each radical
const2013 [10]

Answer:

AECG

Step-by-step explanation:

1

sqrt(49) = 7

sqrt(a^2) = a

sqrt(b^2) = b

For every two variables you can take one out from under the root sign and thorough the other one away.

Answer: E

2

sqrt(36) = 6

sqrt(a^2) = a  See comment for 1.

b must be left where it is. There is only 1 of them.

6asqrt(b)

Answer: A

3. sqrt(25) = 5

sqrt(b^2) = b

a must be left alone.  There's only 1 of them.

5b sqrt(a)

answer: C

4

sqrt(81 a b)

sqrt(81) = 9

The variables must be left alone. There's only1 of them

9 sqrt(ab)

Answer G

8 0
2 years ago
A map uses the scale of 3/4 of an inch to represent 3miles. If the
svp [43]

Answer: 6.25 inches

Step-by-step explanation: multiply 3/4 by 25 then divide the answer by 3

hope this helps and mark me brainliest if you can thank you

7 0
3 years ago
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).
ddd [48]

Answer:

f'(x) = 4x^2 - 3 for x \le -3

Step-by-step explanation:

See attachment for proper question

Given

f(x) = -\frac{1}{2}\sqrt{x + 3}

For

x \ge -3

Required

Determine the inverse function

f(x) = -\frac{1}{2}\sqrt{x + 3}

Replace f(x) with y

y = -\frac{1}{2}\sqrt{x + 3}

Swap the positions of x and y

x = -\frac{1}{2}\sqrt{y + 3}

Multiply both sides by -2

-2 * x =-2 *  -\frac{1}{2}\sqrt{y + 3}

-2x =\sqrt{y + 3}

Square both sides

(-2x)^2 =(\sqrt{y + 3})^2

4x^2 =y + 3

Make y the subject

y = 4x^2 - 3

The inverse has been solved. So, we need to replace y with f'(x)

f'(x) = 4x^2 - 3

Next, is to determine the interval

x \ge -3

Change inequality to \le

x \le -3

Hence, the inverse function is:

f'(x) = 4x^2 - 3 for x \le -3

7 0
3 years ago
Turn the sentence into an expression please
PilotLPTM [1.2K]

Answer:

6 * (n^2 + 4)

3 0
2 years ago
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