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
KonstantinChe [14]
3 years ago
11

When 21 is subtracted from the square of a number, the result is 4 times the number.

Mathematics
1 answer:
bixtya [17]3 years ago
8 0

Answer:

7

Step-by-step explanation:

7^2 =49

49 -21 =28

28÷7 = 4

You might be interested in
What is x in the equation 4x - 12 equals -7x - 111
lukranit [14]
4x - 12 = -7x - 111
11x = -99
x = -9
5 0
3 years ago
Read 2 more answers
Help asap will give brainliest
ArbitrLikvidat [17]

<u>Answer:</u>

• Equation = 2(\frac{7}{4}w  + w) = 176

• length = 56 ft

• width = 32 ft

<u>Step-by-step explanation:</u>

The ratio of the length to width is 7:4.

∴ \frac{l}{w} = \frac{7}{4}

⇒ l = \frac{7}{4} w                 [Equation 1]

We know that the perimeter of the garden is 176 feet.

∴ 2(l + w) = 176

⇒ 2(\frac{7}{4}w  + w) = 176

⇒ \frac{7}{4} w + w = 88        [From Equation 1]

⇒ \frac{7 w + 4w}{4}  = 88

⇒ \frac{11w}{4} = 88

⇒ 11w = 352

⇒ w = \bf 32 \space\ ft

We know from Equation 1 that:

l = \frac{7}{4} w

∴ l = \frac{7}{4} (32)

⇒ l = \bf 56 \space\ ft

7 0
2 years ago
The managers of an airline analyzed a random sample of flights and found that 48 out of 50 were on time. The airline has 450 fli
Elena L [17]

Answer:

432 flights are expected to arrive at time.

Step-by-step explanation:

48/50= 0.96

0.96 x 450=  432

8 0
3 years ago
Need help with this question please!
nevsk [136]
I would say it is A because if you subtract <em>p,</em> the original price by $2.50, you would get <em>d, </em>the discounted price. Look at B u see that you're adding the discount which doesn't make sense. Looking at C, the discounted price of different prices can't always be the same. And finally, D, the discounted price is greater than the original. Also, if you subtract you would get different discounts.
6 0
3 years ago
ILL GIVE BRAINELST
murzikaleks [220]

Answer:

A = 12 ft

Step-by-step explanation:

Perimeter ( of SQUARE) B = 64

  then each side = 64/4 = 16

AREA of SQUARE C = 400

    side X side = 400

        then side = sqrt 400

Now use Pyhtagorean Theorem to find leg of right triangle that is

   side A  Side B  hypotenuse Side C

A^2 + 16^2 = (sqrt 400)^2

A^2 = 400 - 256

A^2 = 144       then A = 12  Ft

6 0
2 years ago
Other questions:
  • Is 3(x+x+y) equivalent to 3x+3(x+y)
    6·2 answers
  • Write the fraction 2/5 as an equivalent with the given denominator 25
    8·2 answers
  • The admission fee at an amusement park is $1.50 for children and $4.00 for adults. On a certain day, 304 people entered the park
    14·1 answer
  • M-3x=2x p what does x equal
    13·1 answer
  • What is the final amount if 893 is decreased by 2% followed by a further 7% decrease? Give your answer rounded to 2 DP.
    6·1 answer
  • The price of a scooter was ₹ 54,000 last year. It has increased by 20% this year. What is the price now? *
    10·1 answer
  • What is the slope of the line in the graph?
    7·1 answer
  • Help fast 100 points!!
    15·2 answers
  • In algebra, we often study relationships where a change to one variable causes change
    7·1 answer
  • Help me to answer this Math pls​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!