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4 years ago

At noon temperature is 12 degrees f. It drops 2 degrees every hour. At what time is the temperature -4 degrees?

1 answer:

meriva4 years ago

6 0

If it drops 2 degrees every hour and the time is 12:00 it would take 6 hours to get the temperature to 0 degrees and if it wants the temperature to get to -4 you need 2 more hours so it would take 8 hours and be 8:00 by the time it got to -4

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KengaRu [80]

10 * (-2)^3 *(-3)^2
10 * -8 * 9 =
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7 0

3 years ago

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There are some people in a cinema.

Elan Coil [88]

Answer:

$Adults = 510$

Step-by-step explanation:

Given

$Children = \frac{3}{5}$

$Girls:Boys = 2 : 7$

$Girls = 170$

Required

Determine the number of adults

First, we need to calculate the number of children

$Girls:Boys = 2 : 7$

Given that: $Girls = 170$

Substitute 170 for Girls in $Girls:Boys = 2 : 7$

$170 : Boys = 2 : 7$

Convert to fraction

$\frac{170}{Boys} = \frac{2}{7}$

Cross Multiply

$Boys * 2 = 170 * 7$

Divide both sides by 2

$Boys = \frac{170 * 7}{2}$

$Boys = \frac{1190}{2}$

$Boys = 595$

So, the number of children are:

$Children = Boys + Girls$

$Children = 595 + 170$

$Children = 765$

Next, we calculate the number of people in the cinema.

$Children = \frac{3}{5} * People$

Substitute 765 for Children

$765 = \frac{3}{5} * People$

Make People the subject.

$People = \frac{765 * 5}{3}$

$People = \frac{3825}{3}$

$People = 1275$

If 3/5 are children, then 2/5 are adults.

So:

$Adults = \frac{2}{5} * 1275$

$Adults = \frac{2* 1275}{5}$

$Adults = \frac{2550}{5}$

$Adults = 510$

7 0

3 years ago

What’s the square root of pie

TEA [102]

To 2 decimal places, the square root of pi is 1.77

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3 years ago

D’Andra has a dentist appointment in 5 weeks. There are 7 days in a week. How many days are in 5 weeks?

Lisa [10]

Answer:

A. 35

Step-by-step explanation:

Each week has 7 days, and we have 5 weeks.

Week 1 has 7 days.

Week 2 has 7 days.

Week 3 has 7 days.

Week 4 has 7 days.

Week 5 has 7 days.

We can add all these together to get the total number of days: 7 + 7 + 7 + 7 + 7 = 7 * 5 = 35.

Thus, the answer is A.

Hope this helps!

8 0

3 years ago

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The function v(t) 1350(1.017)t represents the value v(t), in dollars, of a comic book t years after its purchase. the yearly rat

Vikentia [17]

Answer:

The yearly rate of appreciation of the comic book is r=0.017 or r=1.7%

Step-by-step explanation:

we have

$v(t)=1,350(1.017)^{x}$

This is a exponential function of the form

$f(x)=a(b)^{x}$

where

a is the initial value

b is the base

In this problem

a=$1,350

b=1.017

Remember that

b=1+r

1+r=1.017

r=1.017-1=0.017

therefore

The yearly rate of appreciation of the comic book is r=0.017 or r=1.7%

6 0

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