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
Marrrta [24]
3 years ago
12

21 is 15% of what number?

Mathematics
1 answer:
Gnoma [55]3 years ago
7 0
You do it like this:
15/100 = 21/x and cross multiply like this:
15x = 2100 ((Divide by 15 on both sides)
x = 140 (This is your answer)
I hope this helps you! Have a great night!

You might be interested in
Anyone know this one ?
Vedmedyk [2.9K]

The answer is B i.e. one

4 0
3 years ago
A serving of rice is 1/3 of a cup. How many servings are there in a 2 1/3-cup bag of rice?
iogann1982 [59]

Answer:

7

Step-by-step explanation:

each cup is 1/3 so divide 2 1/3 by 1/3 to get 7 cups

hope this helps

6 0
3 years ago
Can someone please help me on 12
mixer [17]
Well first, you need to solve within the parentheses. You would get 23.8 - 14 - 8.6

Then you would subtract them in order, and your answer would be 1.2
6 0
3 years ago

zhuklara [117]

Step-by-step answer:

Given:

A triangle

Perimeter  = 60 cm

longest side = 4* shortest side (x)

Solution:

longest side = 4x

shortest side = x

third (intermediate side = 60 -x -4x = 60-5x

The triangle inequality specifies that the sum of the two shorter sides must be greater than the longest side to form a triangle.  Hence

x + y > 4x

x + 60-5x > 4x

60 - 4x > 4x

8x < 60

x < 60/8 = 7.5, or

x < 7.5

Therefore to form a triangle, x (shortest side) must be less than 7.5 cm.

Examine the options: both 7 and 5 are both less than 7.5 cm.

40, 30 and 25 all have a problem because the longest side (4 times longer) will exceed the perimeter of 60.

Now also examine cases where 4x is NOT the longest side, in which case we need

4x>=y

or

4x >= 60-5x

9x >=60

x >= 6.67

so x=5 will not qualify, because 4x will no longer be the longest side.

The only valid option is x=7 cm

The side lengths for x=7 and x=5 are, respectively,

(7, 25, 28)

5, 20, 35  (in which case, the longest side is no longer 4x=20, so eliminated)

7 0
3 years ago
marie and jessie fly from detroit to new york their flight leaves at 1:00 pm and they arrive at 5:00pm if they flew avout 600 mi
enot [183]
150 miles per hour (pretty slow for a plane so I hope that's correct)
3 0
3 years ago
Other questions:
  • What is the equation of this circle in standard form?
    7·2 answers
  • Answer these three question from what you see
    14·1 answer
  • What is the value of the expression below 27^1/3
    10·1 answer
  • Two circles have radii 16cm and 23cm. what is the difference between their circumference ?​
    9·2 answers
  • Corresponding angles of ΔABC and ΔDEF are congruent. Does this prove that the triangles are congruent? Justify.
    10·2 answers
  • Eric is 6ft 2 in. tall. His brother is 4ft 9 in.tall.How many inches taller is Eric than his brother?
    13·2 answers
  • Sam buys 20 boxes of oranges.
    10·1 answer
  • A linear function forms a line. true or false​
    6·1 answer
  • Follow the steps to finish solving the equation -3x +18 = 7x
    7·2 answers
  • If y = 3x + 1 is changed to y = 4x + 1, how would the graph of the new function compare with
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!