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
Dovator [93]
3 years ago
10

How could you use the product of 10x42=420 to find the product of 5x42?

Mathematics
1 answer:
Airida [17]3 years ago
3 0
In this case, it's clear that 5 is half of ten, therefore, you have to divide the first equation in half, giving you 5x42= 210. If it was something such as 20x24, you just work the answer from the multiple of ten. Hope this helpsn
You might be interested in
the perimeter of the rectangle is 86 inches. if the length is 3 inches longer that the width, find the width of a rectangle.
yawa3891 [41]
The length is 23in and the width is 20 inches
8 0
3 years ago
Read 2 more answers
The highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder 3.5-L automatic 5-speed using premium fuel is a normally distribu
Elodia [21]

Answer:

a) Standard error = 0.5

b) 99% Confidence interval:  (19.2125,21.7875)

Step-by-step explanation:

We are given the following in the question:

Population mean =  20.50 mpg

Sample standard deviation = 3.00 mpg

Sample size , n = 36

Standard Error =

=\displaystyle\frac{\sigma}{\sqrt{n}} = \frac{3}{\sqrt{36}} = 0.5

99% Confidence interval:

\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.01} = \pm 2.575

20.50 \pm 2.575(\displaystyle\frac{3}{\sqrt{36}})= 20.50 \pm 1.2875 = (19.2125,21.7875)

4 0
3 years ago
Asnwer aswer answer answer plz ASWER ANSWER ANSWER ANSWERR PLZ ANSWEER I NEED ANSWER PLZZZZZ!!!! i need help HELP!!!
Ksenya-84 [330]

Answer:

29,035.43 meters

Step-by-step explanation:

What we know:

- The elevation of the shore of the Dead Sea is -1,344.99 meters.

- The summit of Mt. Everest is 30,380.42 meters above the Dead Sea.

So, we just add the two values.

30,380.42 + (-1,344.99)

We can rewrite this as 30,380.42 - 1,344.99 since adding a negative is the same as subtracting that number.

And we get 29,035.43 meters as the elevation or height of Mt. Everest.

7 0
2 years ago
I don't know how to do this
ValentinkaMS [17]
I would say c hope this helps 
6 0
3 years ago
Read 2 more answers
A braclet is $60 and additional $10 dollars for each charm what would the equation be in y=mx+b form?? HELLLLPPP!!
disa [49]
Y= 10x+60 is the answer i think
6 0
3 years ago
Other questions:
  • Jason jumps from a plane at an altitude of 1000 m. His parachute opens after 10 seconds. The graph shows the relationship betwee
    14·2 answers
  • Given: x+2y=-6. Solve for y. y=x-6/2
    10·1 answer
  • Ron's factory is currently producing 30 chairs in a day. how many chairs will be produced if production is to be increased by 13
    15·2 answers
  • Contestants in a dance-a-thon rest for the same amount of time every hour. A couple rests for 27 minutes In 3 hours. How long di
    8·1 answer
  • What is the y-value of the vertex of the function f(x) = –(x – 3)(x + 11)?
    11·1 answer
  • The solution set of coordinates y 1/2x+5
    13·2 answers
  • I NEED HELP PLEASE HURRY
    8·2 answers
  • Which value of x is a solution to x2<br> = 16?
    11·1 answer
  • Did I do it rightly?
    5·1 answer
  • Write an expression that is equivalont to 4(5+2)-3h,​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!