All categories

3 years ago

The temperature dropped 18 degrees from 6:00 P.M. to midnight. If the temperature at midnight was 2°F, what

Mathematics

1 answer:

vazorg [7]3 years ago

6 0

Answer:

x - 18°F = 2°F

x = 20°F

Step-by-step explanation:

First, write the equation with the information you know. It dropped 18°F from 6 to midnight, and by midnight the temperature was 2°F

Your equation should look like this: x - 18°F = 2°F

Move the constant to the right hand side and change it's sign:

x = 2°F + 18°F

Add the numbers to get x = 20°F

Hope this helped!

You might be interested in

Suppose we want to choose 5 objects,without replacement from 16 distinct objects

lesya692 [45]

Answer:

4368 ways

Step-by-step explanation:

We want to choose 5 objects,without replacement from 16 distinct objects.

We can use combination in this case. The formula for the combination is given by :

$_{n}C_r=\dfrac{n!}{r!(n-r)!}$

We have, n = 16 and r = 5

So,

$_{16}C_5=\dfrac{16!}{5!(16-5)!}\\\\_{16}C_5=\dfrac{16!}{5!11!}\\\\=4368$

So, there are 4368 ways in which we want to choose 5 objects,without replacement from 16 distinct objects.

4 0

3 years ago

In ∆PQR, PQ = 39 cm and PN is an altitude. Find PR if QN = 36 cm and RN = 8 cm.

OLEGan [10]

Use the Pythagorean theorem two times:

$NQ^2+NP^2=QP^2\\\\36^2+h^2=39^2\\\\1296+h^2=1521\qquad\text{subtract 1521 from both sides}\\\\h^2=225\to h=\sqrt{225}\\\\\boxed{h=15\ cm}$

second time:

$PR^2=RN^2+NP^2\\\\x^2=8^2+15^2\\\\x^2=64+225\\\\x^2=289\to x=\sqrt{289}\\\\\boxed{x=17\ cm}$

<h3>Answer: PR = 17 cm.</h3>

8 0

3 years ago

Read 2 more answers

Solve for f.<br> -f + 2 + 4f = 8 - 3f

IrinaK [193]

-f +2+4f = 8-3f

3f+2 = 8-3f

6f = 6

f = 1

8 0

3 years ago

Read 2 more answers

2. Both the populations of the Candy Kingdom and the Fire Kingdom are in decline; their populations

VMariaS [17]

Answer:2. Both the populations of the Candy Kingdom and the Fire Kingdom are in decline; their populations

since 2010 are given by the functions below:

Cit) 1000 - 500

F(t) = 2500 - 1000

Will their populations ever be equal? If so, when will that happen and what will that population be?

Otherwise, briefly explain why their populations will never be equal.

Step-by-step explanation:

4 0

3 years ago

Please help me first answer gets brainliest

Scrat [10]

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers