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ioda
2 years ago
11

This morning, the temperature was 80 ⁰F. It dropped 5 degrees per hour. In how many (h) hours did the temperature drop to at mos

t 40 ⁰F? Using the inequality 80 - 5h ≤ 40, which solution makes sense?
a. h ≥ 8 (The temperature dropped for more than 8 hours.)

Selected:b. h ≤ 8 (The temperature dropped for 8 hours or less.)This answer is incorrect.

c. h ≥ 8 (The temperature dropped for 8 hours or more.)

d. h ≤ 8 (The temperature dropped for less than 8 hours.)
Mathematics
1 answer:
Annette [7]2 years ago
6 0

Answer: B or D

Step-by-step explanation:

5 times 8 (hours) is 40. Your input was correct, but you can try adding D too

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Marco needs to climb up to the roof of his house. He placed his ladder so that the bottom of
8090 [49]

Answer:

12.4 feet

Step-by-step explanation:

A ladder placed against the wall forms a right angle triangle

Hypotenuse ² = opposite ² + adjacent ²

Hypotenuse = 13 feet

Opposite = 4 feet

Adjacent = x

Hypotenuse ² = opposite ² + adjacent ²

13² = 4² + x²

169 = 16 + x²

169 - 16 = x²

153 = x²

Find the square root of both sides

√153 = √x²

12.369316876852 = x

x = 12.4 feet

Adjacent = x = 12.4 feet

6 0
2 years ago
If there is an 8% tax on 1.00 item what is the total amount of the transaction
rosijanka [135]
$1.08
you would multiply your cost (1.00) by 8% which is equivalent to .08 and then add to to the original cost. or to skip the middle step just multiply it by 1.08 since you are adding the 8% to 100% of the original cost
6 0
3 years ago
zach deposits $15,000 into his savings account. his savings account has an annual interest rate of 1.4%. how much money in inter
Orlov [11]
Do $15,000x.014x2
--
$15,000x.014=$210
$210x2=$420
3 0
3 years ago
Does somebody know the answer to this question I’m lost
Shkiper50 [21]

Answer:

81b + 4 - 14/3b

Step-by-step explanation:

divide by 3b, u can leave the fraction in there

7 0
2 years ago
Which inequality is true when
Mars2501 [29]

Answer:

D

Step-by-step explanation:

If we use the calculator will find out that x= √151/2 ≈ 6.1441

D. 6 < x < 7

x is less then 7 and greater than 6

Without the calculator you can think that 151 is almost 144 that is 12² so

we can approximate √151 to be a bit more then 12

√151/2 = a bit more then 12 /2 = 6 and a bit more

7 0
3 years ago
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