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likoan [24]
2 years ago
8

What is Bethany's score on the test if she got 23 out of 30 right? (Round to the nearest whole number.)

Mathematics
2 answers:
mel-nik [20]2 years ago
6 0

Answer:

77%

Step-by-step explanation:

30 was 100%

23 is  x%

x=23*100/30 = 76.666.. rounded to 77%

matrenka [14]2 years ago
3 0

Answer:

77%

Step-by-step explanation:

23 divided by 30 is 0.766666, which percent-wise is rounded to 77% :)

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A survey was conducted from a random sample of 8225 Americans, and one variable that was recorded for each participant was their
solniwko [45]

Answer:

d. skewed right

Step-by-step explanation:

The shape of the given distribution is rightly skewed. For a symmetric distribution mean and median are equal and if mean is greater than median then the distribution is rightly skewed and if mean is less than median then the distribution is skewed left.

In the given distribution mean is greater than median and so the given distribution is skewed right.

8 0
3 years ago
What is the image of (-1,0) after a reflection over the line y = -x?
umka2103 [35]

Answer:

(1,0)

Step-by-step explanation:

reflection is flipping

flipping over Y would make -, to + or + to -

in this case -1,0 becomes 1,0

7 0
3 years ago
7(2 + 3) − 4 · 2 2 <br><br> the second two is up in the air fyi
AfilCa [17]

Answer:

19

Step-by-step explanation:

7(<u>2 + 3</u>) − 4 · 2² ← like that right so

<u>parenthesis first add the numbers up↓</u>

7(5) - <u>4</u> · 2²

write number in exponential form↓

<u>7(5)</u> - 2²· 2²

multiply↓

35 - <u>2² · 2²</u>

calculate the product↓

35 - <u>2⁴</u>

evaluate the power↓

35-16

then subtract↓

19

7 0
2 years ago
The gas tank on a car holds 15.5 gallons. If the car goes 387.5 miles on a single tank, how many miles per gallon does the car g
Ostrovityanka [42]

Answer:

25 miles per gallon

Step-by-step explanation:

if you divide the number of miles(387.5) by the number of gallons (15.5) you should get 25miles per gallon

5 0
3 years ago
An alrcraft factory manufactures airplane engines. The unit cost C (the cost in dollars to make each airplane engine) depends on
rewona [7]

C(x) should be ;

C(x)=0.9x² - 306x +36,001

Answer:

$9991

Step-by-step explanation:

Given :

C(x)=0.9x^2 - 306x +36,001

To obtain minimum cost :

Cost is minimum when, C'(x) = 0

C'(x) = 2(0.9x) - 306 = 0

C'(x) = 1.8x - 306 = 0

1.8x - 306 = 0

1.8x = 306

x = 306 / 1.8

x = 170

Hence, put x = 170 in C(x)=0.9x²- 306x +36,001 to obtain the

C(170) = 0.9(170^2) - 306(170) + 36001

C(170) = 26010 - 52020 + 36001

= 9991

Minimum unit cost = 9991

5 0
3 years ago
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