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
ASHA 777 [7]
2 years ago
8

A rectangle has an area of 21x + 81 square units. If the width is 3 units, what is the length of the rectangle

Mathematics
1 answer:
rosijanka [135]2 years ago
6 0
If x=3 then the answer is 144
You might be interested in
Rewrite as a power <br> 1 7/9
Morgarella [4.7K]

Answer:

1\frac{7}{9} =\frac{16}{9} =[\frac{4}{3}] ^{2}

Step-by-step explanation:

6 0
3 years ago
What is the slope between (-4,0) and (0,2)
djverab [1.8K]

Answer:

The Slope is 1/2

Step-by-step explanation:

Hope this helps

5 0
3 years ago
Read 2 more answers
When two variables have an inverse relationship, the slope is?
Temka [501]
When two variables have an inverse relationship, the slope is negatively correlated.
6 0
3 years ago
A parabolic arch has a height of 25 feet and a span of 40 feet. How high is the arch 8 feet from each side of the center?
Llana [10]

Answer:

The correct option is;

21 ft

Step-by-step explanation:

The equation of the parabolic arc is as follows;

y = a(x - h)² + k

Where the height is 25 ft and the span is 40 ft, the coordinates of the vertex (h, k) is then (20, 25)

We therefore have;

y = a(x - 20)² + 25

Whereby the parabola starts from the origin (0, 0), we have;

0 = a(0 - 20)² + 25

0 = 20²a + 25 → 0 = 400·a + 25

∴a = -25/400 = -1/16

The equation of the parabola is therefore;

y = (-\frac{1}{16})(x-20)^2 + 25

To find the height 8 ft from the center, where the center is at x = 20 we have 8 ft from center = x = 20 - 8 = 12 or x = 20 + 8 = 28

Therefore, plugging the value of x = 12 or 28 in the equation for the parabola gives;

y = (-\frac{1}{16})(12-20)^2 + 25 = (-\frac{1}{16})(-8)^2 + 25 = 21 \ ft.

4 0
3 years ago
The orbit of a comet in a video game can be defined by the equation (x - 56)^2/150 + (y - 28)^2/256 = 1. Which of the following
ss7ja [257]

Answer:

C & E

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • A theater can seat 957 people. The number of rows is 4 less than the number of seats in each row. How many rows of seats are the
    8·1 answer
  • Christine went shopping and bought each of her ten nephews a gift, either a video costing $14.95 or a cd costing $16.88. she spe
    11·1 answer
  • The ratio of boys to girls at the beach cleanup was 7:8. If there were 42 boys, how many girls were there?
    6·1 answer
  • 100 dL = _________L
    13·2 answers
  • Help me please this is my last question
    10·1 answer
  • Question 4 of 10
    13·2 answers
  • A landscape designer has to construct a rectangular flower bed with a perimeter of 100 feet and the maximum possible area. What
    6·1 answer
  • A scale model of a bus is 12 inches long<br> . How many inches long is the bus it represents
    11·1 answer
  • You go to your locker to get some supplies. You grab 3 pens and 6 markers, then you find 2 more markers on the bottom of your lo
    7·2 answers
  • If (x^2 - y^2 = 10 and (x + y) =2 find x and y?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!