1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ELEN [110]
3 years ago
5

On Friday, the temperature changes -30 each hour. If the temperature changed for 7 hours, what is the total temperature change?

Mathematics
1 answer:
Marina86 [1]3 years ago
8 0

A -120 difference will be seen in the temperature within a 7 hour period

<u>Equation</u>

<em>-</em>30 x 7

<em>Multiplying two of different signs ( - + ,  + - ) will always be negative.</em>

<em>Multiplying two of the same sign ( - - , + + ) will always be positive.</em>

You might be interested in
A snowball has a radius of 7cm. What is the volume of the snowball?
BabaBlast [244]

Answer:

The volume is 1436.8in^2 .

Step-by-step explanation:

-To find the volume of a sphere, you need the formula:

V = \frac{4}{3} \pi r^3

-Use the radius for the formula:

V = \frac{4}{3} \pi 7^3

-Then, you solve:

V = \frac{4}{3} \pi 7^3

V = \frac{4}{3} × \pi × 7^3

V = \frac{4}{3} \pi × 343

V = \frac{1372}{3} \pi = 1436.755

-Round the answer to the nearest tenth:

V = 1436.8

So, therefore the volume is 1436.8in^2 .

7 0
3 years ago
This is my warmup can you please help me out with it ​
Makovka662 [10]

Answer:,

the answer is (4,2)

Step-by-step explanation:

is you look at the 2 equations and plug in the points where the lines intercets you would get the answer soo examples

4+2=6

the first one checks out

the second one

4+(2*2)=8

so the parinthises go first 2 times 2 = 4 plus 4 = 8

6 0
3 years ago
First rewrite 8/25 and 7/20 so that they have a common denominator
Pie

Answer:

  • 8/25 = 32/100
  • 7/20 = 35/100

Step-by-step explanation:

25 and 20 have a least common multiple of 100, so that is your least common denominator.

  8/25 = (8·4)/(25·4) = 32/100

  7/20 = (7·5)/(20·5) = 35/100

6 0
2 years ago
Angel and Jayden were at track practice. The track is 2/5 kilometers around.  Angel ran 1 lap in 2 minutes.  Jayden ran 3 laps
choli [55]

Answer:

6/25 km in 1 min; or 0.24 km/min

Step-by-step explanation:

The info about Angel is not necessary.

Jayden runs 3 laps in 5 mins

Each lap is 2/5 km, so Jayden runs 3 x (2/5 km) in 5 min = 6/5 km in 5 min.

Distance = rate x time

6/5 km = rate (5 min)

We want to isolate r (rate), so divide both sides by 5 min

6/5 km ÷ 5 min = r

6/5 km (1/5 min) = r

6/25 km/min = r  (notice how the units worked out correctly to km/min)

So, Jayden runs 6/25 km in 1 min.

7 0
2 years ago
Read 2 more answers
After substituting, what is the first operation performed when evaluating 5+(9x-3)+2 for x = 5?
Anarel [89]

Answer:

Multiplication

Step-by-step explanation:

Follow PEMDAS, so first you would sub in the 5 then work in the parentheses so you would multiply the 5

4 0
3 years ago
Read 2 more answers
Other questions:
  • What is RT, OB, and US equal PLEASE HELP !!!
    14·1 answer
  • Pediatric asthma survey, n = 50. suppose that asthma affects 1 in 20 children in a population. you take an srs of 50 children fr
    9·1 answer
  • Evaluate the expression.<br> 33 + 3(4 + 1/2)
    12·1 answer
  • Find the perimeter of the following shape, rounded to the nearest tenth:
    12·1 answer
  • Which sequence matches the recursive formula?
    9·2 answers
  • Quanto é três x ao quadrado menos sete x mais dois e igual a zero ?
    12·1 answer
  • Jennifer buys four tubs of coleslaw. She serves two-fifths of each tub onto one plate.
    10·1 answer
  • Consider the following statement. If n is divisible by 6, then n is divisible by 2 and n is divisible by 3.
    12·2 answers
  • PLEASE ANSWER THIS!!
    9·1 answer
  • Find an equation of the line that satisfies the given conditions.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!