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LenaWriter [7]
3 years ago
11

I don’t quite seem to understand can you guys explain ?

Mathematics
1 answer:
kotykmax [81]3 years ago
5 0

Answer:

The answer is D

Step-by-step explanation:

Simplify the first inequality subtract 5 from 20

5t≤ −15

then divide

t ≤ -3

Simplify second ineqality

4t ≥ 20

divide

t ≥ 5

final answer :

t ≤ −3 or t ≥ 5

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The nearest perfect square that is less than 22 is
Andrew [12]

Answer:

16

Step-by-step explanation:

The square numbers are

1² = 1

2² = 4

3² = 9

4² = 16 ← this is the closest perfect square

5² = 25 (not applicable, over 22)

5 0
3 years ago
Correct answers only please!
irina1246 [14]

Answer:

  C. 67 mph

Step-by-step explanation:

The speedometer reports speed based on the number of revolutions the tire makes in a given time period. If the motorcycle travels 28/25 times as far on each revolution, its speed is 28/25 times as great.

  (28/25)(60 mph) = 67.2 mph ≈ 67 mph

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The distance traveled is proportional to the circumference of the tire, which is proportional to the diameter. Hence, actual speed for a given speedometer reading is proportional to the diameter of the tire.

8 0
3 years ago
Read 2 more answers
9+3.5g=11−0.5g<br> g=????
Hoochie [10]
Substitution. g= 1/2
3 0
4 years ago
48/6= X/2.3<br> ..zzzzzzzzz
diamong [38]

Answer:

48x+13.8

Step-by-step explanation:

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8 0
3 years ago
Jerry planted a pine tree that was 5 feet tall and a maple tree that was 10 feet tall. The pine tree grew 3 feet taller per year
stich3 [128]

The initial length of the pine tree=5 feet.

Groth rate of pine tree =3 feet/year.

The initial length of the pine tree =10 feet.

Groth rate of the maple tree =2 feet/year.

After x years, the height of the pine tree= 5+3x feet and

after x years, the height of the maple tree= 10+2x feet.

The inequality for which, after x year, the pine tree is taller than the maple tree is

5+3x>10+2x

\Rightarrow x>5 .

The inequality for which, the pine tree is at least as tall as the maple tree is 5+3x\geq10+2x.

\Rightarrow x\geq 5 .

Again, after 3x years, the height of the pine tree= 5+3(3x)=5+9x feet and

after 2x years, the height of the maple tree= 10+2(2x)=10+4x feet.

The inequality for which, after 3x years, the pine tree is taller than the maple tree was after 2x years is

5+9x>10+4x

\Rightarrow 5x>5

\Rightarrow x>1.

The inequality for which, the pine tree is at least as tall as the maple tree is 5+9x\geq10+4x.

\Rightarrow 5x\geq5

\Rightarrow x\geq 1.

5 0
3 years ago
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