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
Oliga [24]
4 years ago
13

What are 2 ways of solving this proportion? 4/5 = 28/x

Mathematics
1 answer:
max2010maxim [7]4 years ago
6 0

The first way is to cross multiply

4/5 = 28/x

4x = 5*28

4x = 140

4x/4 = 140/4

x = 35 which is the answer

=============================================

The second method is to note the denominators 4 and 28, and to ask yourself "what times 4 gets me 28?". The answer being 7, so 7*4 = 28. If you multiply top and bottom of the fraction 4/5 by 7, then you end up with 7*4 = 28 up top and 7*5 = 35 down below. This is another way of seeing how 4/5 = 28/35

Either way, the answer is x = 35

You might be interested in
Four less than the quotient of ten and a number, increased by eight;
tensa zangetsu [6.8K]

Answer:

i don't know but i think its 42

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The average speed of a car driving down freeway is 70mph with a standard deviation of 5mph. Thid speed is normally distributed.
ikadub [295]

Answer:

0.081,0.2621,0.645,0.919

Step-by-step explanation:

Let X be the average speed of a car driving down freeway

Given that X is normal with mean as 70mph with a standard deviation of 5mph.

To convert to Z score we do

Z =\frac{x-70}{5}

a)  the probability that a randomly selected car is driving more than 77mph

=P(X>77)\\=P(Z>1.4)\\=0.081

b) probability that a randomly selected car is driving between 65 and 69 mph

= P(-1

c) the probability that a randonly selected car is driving between 67 and 77mph

=P(-0.6

d) the probability that a randomly selected car is driving less than 77mph

=P(Z

5 0
3 years ago
Please help name brainliest
kvasek [131]

Answer:

20 days

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
The best estimate of 45 percent of 76
yulyashka [42]
76 / 100 = 0.76 , 0.76 x 45 = 34.2
5 0
3 years ago
Read 2 more answers
7+6 (mod 5) =<br><br>2+1 (mod 5) =<br><br>20 (mod 11) =<br><br>35 (mod 11) =<br><br>20 (mod 11) =​
ValentinkaMS [17]

Answers:

  • 3
  • 3
  • 9
  • 2
  • 9

======================================

Explanation:

7+6 = 13. Divide this over 5 to get 13/5 = 2 remainder 3. The quotient 2 is something we don't care about. <u>We only worry about the remainder</u>. Therefore 7+6 = 3 (mod 5)

-------------

2+1 = 3 (mod 5) for similar reasoning as above. 3/5 = 0 remainder 3.

-------------

20 = 9 (mod 11) since 20/11 = 1 remainder 9. Imagine you had 20 cookies and 11 friends. Each friend would get 1 whole cookie (quotient) and there could be 9 left over (remainder).

-------------

35/11 = 3 remainder 2

Or you could use repeated subtraction like so to find the remainder

35-11 = 24

24-11 = 13

13-11 = 2

The last result (2) is smaller than 11, so we stop here and this is the remainder.

Therefore, 35 = 2 (mod 11)

--------------

Here's another way to think of it. Consider you have $35 in your pocket. Let's say a store is selling trinkets for $11 each. We can pose these key questions:

  • What is the most number of trinkets you can buy?
  • If you buy that max amount, how much will you have left over?

The answer to the first question is 3 trinkets because 3*11 = 33 dollars is under the budget of $35. The amount left over is 35-33 = 2 dollars which is the remainder. It's not larger than 11, so we cannot buy any more trinkets at this point.

5 0
3 years ago
Other questions:
  • Find the mean of 8, 7, 9 graphically.<br> What is the sum of the numbers?
    6·1 answer
  • For what value of x do the functions f(x)=−52x+4 and g(x)=−12x−4 have the same output?
    8·1 answer
  • Help please!! I'll give BRAINLIEST if correct!!
    10·1 answer
  • according to the Food and Drug Administration, the recommended daily intake of iron is 18 mg. This is 4 less than twice the reco
    7·1 answer
  • 1. The Brooklyn Nets basketball team played 82 regular-season games last
    10·1 answer
  • Multiple the following <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B18%7D%7B15%7D%20%20%5Ctimes%20%20%5Cfrac%7B25%7D%7B12%
    14·1 answer
  • What is the equation of the line parallel to 8x−16y=−14 and passing through (3,0)?
    9·1 answer
  • In this triangle what is the measure of the exterior angle 52?
    13·2 answers
  • 12.- En una fábrica 15 obreras cubren un pedido de faldas en nueve dias de
    10·1 answer
  • According to this diagram, what is tan 62°?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!