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
faust18 [17]
2 years ago
9

Catalina multiplied 842 and 3 and got 3,326. how can can she check to see if her answer is reasonable

Mathematics
1 answer:
denpristay [2]2 years ago
4 0
By rounding 842 to 800, she can multiply 800 by 3 to get 2,400.

then, multiply 40 by 3, you get 120 and add the two together to get 2,520

this shows her answer is not necessary reasonable
You might be interested in
Use the equation below to find v, if u= 12, a=9, and t=4.<br> v=u+at
Lina20 [59]

Answer:

v=48

Step-by-step explanation:

v=?\\\\u=12\\\\a=9\\\\t=4\\\\v=u+at\\\\v=(12)+(9)(4)\\\\v=12+36\\\\v=48

5 0
3 years ago
A car motercycle leaves at noon from the same location, heading in the same direction. The average speed of the car is 30mph slo
alina1380 [7]

Answer:

speed of motorcycle = 40 mph

speed of car = 50 mph

Step-by-step explanation:

Here is the complete question

A car and a motorcycle leave at noon from the same location, heading in the same direction. The average speed of the car is 30 mph slower than twice the speed of the motorcycle. In two hours, the car is 20 miles ahead of the motorcycle. Find the speed of both the car and the motorcycle, in miles per hour.

Speed = distance / time

This question would be solved using simultaneous equation

let m =  average speed of the motorcycle

c = average speed of the car

c = 2m - 30  equation 1

20 =(c - m) x 2 equation 2

insert equation 1 into equation 2 and divide through by 2

10 = (2m - 30) - m

solve for m

m = 40 mph

substitute for m in equation 1

2(40) - 20 = 50 mph

8 0
3 years ago
I am confused about 11.
babunello [35]
-90.1 is the answer.
7 0
3 years ago
You install 638 feet of fencing along the perimeter of a rectangular yard. The width of the yard is 152 feet. What is the length
vovikov84 [41]

The length is 486

Step-by-step explanation:

638 subtract 152

6 0
3 years ago
Jada purchases a sweater for $36. The store charges her 8% sales tax on the purchase. How much sales tax will the store charge o
dusya [7]

Answer:

Step-by-step explanation:

36/100=0.36 - 1%

8*0.36=2.88$

6 0
3 years ago
Other questions:
  • It takes Kaeden 6 min to type two-thirds of a page. At this rate, how long will it take him to type a 5-page report?
    10·1 answer
  • A single die is rolled. Find the probability of rolling an even number or a number less than 4
    15·2 answers
  • Find the derivative of f(x) = negative 3 divided by x at x = -4.
    11·2 answers
  • So far, Monica has read 5/6 of a book.She has read the same number of pages each day for 5 days What fraction of the book does M
    7·1 answer
  • Which is an equation of the line passing through ( -2,3) and perpendicular to the line 5x-y=12
    9·2 answers
  • What is the cube root of 27x^18?<br> A)3x^6<br> B)3x^9<br> C)9x^6<br> D)9x^9
    6·1 answer
  • My cousin is using my account to do this
    5·2 answers
  • What's six tenths divided by seven <br><br><br><br><br><br><br><br>​
    11·1 answer
  • Balance this equation:<br> HgO ---&gt; 2Hg + O2
    7·1 answer
  • a man bought a 4 kg apples at the rate of rs 50 per kg he sold 3 kg apples at the rate of rs 65 and 1 kg apples at rs 40 find hi
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!