2 years ago

Fourth grade level. Use mental math to find 7x53

Mathematics

2 answers:

vazorg [7]2 years ago

5 0

The answer is 371 hours

Stolb23 [73]2 years ago

3 0

Answer:

371

Step-by-step explanation:

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Solve D 41=12d-7 zhcduhdudebiscbihbihb

Daniel [21]

Answer:

Step-by-step explanation:

12d - 7 = 41

12d = 48

d = 4

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2 years ago

John's Mathematics exam mark this year is increased by 5% to 84. Find his Mathematics exam mark

Svet_ta [14]

Answer:

80%

Step-by-step explanation:

Let's call the past exam mark m,

m*105%=84

m*105/100=84

m=84/(105/100)

m=80

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2 years ago

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A rocket is traveling at 283 miles per minute. How far will the rocket travel in 15 minutes?

Eddi Din [679]

Answer:

4,245 miles

Step-by-step explanation:

Hello there,

the reason the answer is 4245 is because its says per minute therefore each minute of the rocket is going 283 miles and when it ask how miles did it travel in 15 minutes u just multiply 283 and 15 which gets you the answer 4245 miles

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2 years ago

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Marcos charges $6 an hour to work in his neighborhoods gardens. Complete the graph to show proportional relationship of the amou

NISA [10]

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120

Step-by-step explanation:

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2 years ago

You are riding a roller coaster when a shoe falls off your foot. The function y=300−16t2 represents the height y (in feet) of th

Juli2301 [7.4K]

Answer:

Time to land on 11ft is 4.25 seconds

Step-by-step explanation:

Given

$y = 300 - 16t^2$

Required

Solve for t when height is 11ft

This implies that $y = 11$

So: substitute 11 for y in $y = 300 - 16t^2$

$11 = 300 - 16t^2$

Collect Like Terms

$16t^2 = 300 - 11$

$16t^2 = 289$

Express both sides as squares

$4^2 * t^2 = 17^2$

$(4t)^2 = 17^2$

Take square roots of both sides (ignore negative)

$4t = 17$

Solve for t

$t = \frac{17}{4}$

$t = 4.25$

Hence, time to land on 11ft is 4.25 seconds

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2 years ago