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
liraira [26]
3 years ago
15

the area of a desktop is represented by x^2 - 49. find the dimensions of the desktop in terms of x. show work please.​

Mathematics
1 answer:
Levart [38]3 years ago
4 0

Answer:

The dimensions of the desktop are (x+7) units by (x-7) units

Step-by-step explanation:

we know that

The difference of squares is equal to

a^2-b^2=(a+b)(a-b)

we have

x^2-49

Remember that

49=7^2

substitute

x^2-7^2

Applying difference of squares

x^2-7^2=(x+7)(x-7)

therefore

The dimensions of the desktop are (x+7) units by (x-7) units

You might be interested in
The ratio of Dobermans to terriers is 2:7. There are 774 dogs altogether.
kaheart [24]

Answer:

172-602 I think

Step-by-step explanation:

6 0
2 years ago
Can you tell me the ones I got wrong and which are the correct ones. Might need to zoom in. Will give brainly
Mama L [17]

Answer:

I think

Step-by-step explanation:

y might be 50 degrees

z might be 40 degrees

w might be 140 degrees

x might be 130 degrees

7 0
3 years ago
Find t12 term in an arithmetic progression having t3 = 10 and t10 = −4 .
Marat540 [252]

Answer:

t12= -8

Step-by-step explanation:

t3

a+2d=10 (1)

t10

a+9d=-4. (2)

From (1)

a=10-2d. (3)

Sub into (3) into equ (2)

a+9d=-4

10-2d+9d=-4

10+7d=-4

7d=-4-10

7d=-14

Divide both sides by 7

d=-14/7

d= -2

10=a+2d

10=a+2(-2)

10=a-4

10+4=a

14=a

a=14

t12=a+11d

= 14+11(-2)

=14-22

= -8

t12= -8

6 0
3 years ago
An art museum received a collection of 92 African American paintings. The museum can display 40 of the paintings on the first fl
Ierofanga [76]

Answer: About 43% of the paintings are displayed on the first floor.

Step-by-step explanation: For this problem we can use a percent equation to solve for p, the percent of paintings that will be displayed on the first floor.

Lets write the percent equation:

40/92 = p/100  (We basically are finding 40 out of 92 paintings is what percent of the total paintings.

40/92 x 100 = p/100 x 100 (We always multiply both sides by 100 when dealing with percent that are out of a whole, or 100.)

40 x 100 = 4000/92 = ABOUT 43. p/100 x 100 = p.

About 43 = p

So about 43% of the paintings are displayed on the first floor.

4 0
3 years ago
Which postulate can be used to prove that the triangles are congruent?
Bezzdna [24]

Answer:

D. not congruent

Step-by-step explanation:

Only two pairs of congruent sides are given to us, when we need either 3 pairs of congruent sides (SSS) or two pairs of congruent sides & 1 pair of congruent angles (SAS), or two pairs of congruent angles & one pair of congruent sides (ASA).

~

7 0
3 years ago
Other questions:
  • Select the correct answer from the drop-down menu.
    9·1 answer
  • 17% of what is 156?<br> I got 918. just checking my answer..
    10·1 answer
  • I wanna know the answer for this<br> Question
    6·1 answer
  • Sally agreed a compound interest of 5.5% for a fixed term. If she invested £800 to this agreement, then what was her total at th
    5·1 answer
  • Lines s, t, u, and v are cut by transversal r. Clockwise from top left, the angles formed by r and s are blank, 89 degrees, blan
    13·2 answers
  • A game consists of drawing two tiles from a jar containing 3 red and 4 green marbles. What is the probability that at least one
    15·1 answer
  • How many sides do 1 triangle, 4 octagons, 5 dodecagons, and 4 quadrilaterals have in all?
    5·1 answer
  • Dinosaurs have been extinct for about 6.5 X 10 years, while Neanderthals have been extinct for about 30 x 109 years. About how m
    10·1 answer
  • GIVING BRAINLIEST!!!
    6·1 answer
  • What 2 numbers multiply to make -30 and combine to make -7? ____and____<br> Help PLEASEE
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!