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
arlik [135]
3 years ago
7

27. The square of a number is 8 more than 420 minus 347. What is thenumber?​

Mathematics
1 answer:
Stells [14]3 years ago
8 0

Answer:

x=9 or -9

Step-by-step explanation:

the equation is:x^2-8=420-347

420-347=73

if x=9 then 81-8=73

and then 73=73

so x=9

hope this helps!

please mark my answer as brainliest! thanks! :)

You might be interested in
Six rectangles each with a common base width of 2
Yuki888 [10]
91 IS THE AREAS OF THE SIX RECTANGLES
4 0
3 years ago
A set of three lines that has one point of intersection
ryzh [129]
This construction called a pencil of lines. That figure can have 3,4,5.... any number of  straights lines. The main rule is their common point. And it looks like spokes of a wheel. Here you can find a lot of vertical angles and rays.
6 0
3 years ago
Geometry hw!!! picture is above
AnnZ [28]
X=12 because 73-3x=61-2x so add 3x to both to make 73=61+X then subtract 61 from both to get 12=X
7 0
2 years ago
Zohar is using scissors to cut a rectangle with a length of 5x - 2 and a width of 3x + 1 out of a larger piece of paper. Which
kirza4 [7]

Answer:

2*(5x - 2) + 2*(3x+1) ; Perimeter = 62 centimeters

Step-by-step explanation:

2*(5x - 2) + 2*(3x+1) = 10x - 4 + 6x + 2

                                = 16x -2

If x = 4 , then Perimeter = 16*4 - 2 = 64 - 2 = 62 cm

4 0
3 years ago
Read 2 more answers
If a projectile is launched vertically upward from 800 ft above the ground with an initial velocity of 80 ft per second, its hei
tiny-mole [99]

Hello!

10 seconds to return to the ground.

7 seconds to reach 576 feet above the ground.

Find the amount of time taken to reach the ground by setting the equation equal to 0:

0 = -16t² + 80t + 800

Factor out -16 from the equation:

0 = -16(t² - 5t - 50)

Factor the terms inside of the parenthesis:

0 = -16(t - 10)(t + 5)

Find the zeros:

t - 10 = 0

t = 10

t + 5 = 0

t = -5

Time can only be positive in this instance, so the correct answer is 10 sec.

Find the time by substituting in 576 for the height:

576 = -16t² + 80t + 800

Subtract 800 from both sides:

-224 = -16t² + 80t

Rearrange:

0 = -16t² + 80t + 224

Simplify:

0 = -16(t² - 5t - 14)

0 = -16(t - 7)(t + 2)

t = 7 seconds.

8 0
3 years ago
Other questions:
  • I need to know the answer to part A and B
    10·1 answer
  • Help Please.<br><br> Solve the equation. <br> x^2 = -22x - 121
    8·2 answers
  • Which of the following is an equation of a line that is parallel to y = 4 x + 9 ? (Choose all correct equations.)
    8·1 answer
  • A patrolman spends 25% every day completing paperwork. The patrolman’s shift each day is 8 hours. How much of his time does he s
    11·1 answer
  • Find the value of x
    9·1 answer
  • Four roommates want to split the price of a computer. How much will each roommate pay? Write an equation and solve it by using t
    12·2 answers
  • PLZ HELP as soon as possible!!!
    5·1 answer
  • A building with a height of 74m casts a shadow that is 37m long. A person standing next to the building casts a shadow that is 0
    15·1 answer
  • Given the formula : Find the amount of money accumulated if you invested $25,000 at 4.3% interest for 8 years compounded monthly
    11·1 answer
  • If the ratio football players two basketball players at your school is 7:5 then how many basketball players are there if they ar
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!