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4 years ago

81 + 2d > 90, d = 2 TRUE OR FALSE

Mathematics

1 answer:

telo118 [61]4 years ago

4 0

Answer:

False

Step-by-step explanation:

False because you plug in 2 for d and makes the equation 81 + 2x2 > 90 then it`s just simple math 2x2 is 4 making it 81 + 4 > 90 and the answer is 85 > 90 which is false

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All the fourth-graders in a certain elementary school took a standardized test. A total of 81% of the students were found to be

Dvinal [7]

Answer:

The probability that a student is proficient in mathematics, but not in reading is, 0.10.

The probability that a student is proficient in reading, but not in mathematics is, 0.17

Step-by-step explanation:

Let's define the events:

L: The student is proficient in reading

M: The student is proficient in math

The probabilities are given by:

$P (L) = 0.81\\P (M) = 0.74\\P (L\bigcap M) = 0.64$

$P (M\bigcap L^c) = P (M) - P (M\bigcap L) = 0.74 - 0.64 = 0.1\\P (M^c\bigcap L) = P (L) - P (M\bigcap L) = 0.81 - 0.64 = 0.17$

The probability that a student is proficient in mathematics, but not in reading is, 0.10.

The probability that a student is proficient in reading, but not in mathematics is, 0.17

5 0

4 years ago

An average person’s hair grows at a rate of 18 cm per year. How fast in inches per month does the average person’s hair grow? Sh

givi [52]

Answer:

1.5 inches per month

Step-by-step explanation:

18 / 12 = 1.5

3 0

4 years ago

Read 2 more answers

Owen bought 9 chicken wings for $15.30. What was the cost of the wings, in dollars per wing?

kykrilka [37]

Answer:

1.70

Step-by-step explanation:

15.30 ÷ 9 = 1.70

1.70 dollars per chicken wing

I hope this helps

7 0

3 years ago

Mr. Gardener invested $500,000. His annual interest was $40,000. What was the annual interest rate?

Archy [21]

Mr. Gardener's annual interest rate is 8%.

40,000/500,000 = 0.08

8 0

3 years ago

Henry Devine bought a new dishwasher for $320. He paid $20 down and made 10 monthly payments of $34. What actual yearly interest

masha68 [24]

Henry paid a total of $360 for the dishwasher: $20 + (10 x $34) = $20 + $340= $360

Therefore he paid $40 extra which we place over the original amount of the dishwasher: $\frac{40}{320} = \frac{4}{32} = \frac{1}{8}$

Dividing 1 by 8 we get .125 which, when changed to a percentage becomes 12.5%
Henry paid a yearly interest rate of 12.5%

3 0

3 years ago