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
Sonbull [250]
2 years ago
7

NEED HELP FAST WILL GIVE BRAINIEST

Mathematics
2 answers:
vladimir1956 [14]2 years ago
5 0

Answer:

x^2 + 8x - 65 = 0.

Step-by-step explanation:

In order to solve the side of the enlarged area of 81 square inches, we use the equation in solving the area of a square. Area = side^2.

the increase in side will be x, so (4+x)^2 = 81, x^2 + 4x + 4x + 16 = 81

x^2 + 8x + 16 - 81 = 0

x^2 + 8x - 65 = 0.

  Hoped this helped mark Brainliest!

almond37 [142]2 years ago
4 0

to solve the side of the area of 81 square inches

use the equation in solving the area of a square. Area = side^2.

the increase in side will be x, so (4+x)^2 = 81, x^2 + 4x + 4x + 16 = 81

x^2 + 8x + 16 - 81 = 0

x^2 + 8x - 65 = 0.

You might be interested in
I need help please.
Norma-Jean [14]

Answer:

No

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
4a+6b=10<br> 2a-4b=12<br><br> what does 12a =?
Usimov [2.4K]
If you have at least as many equations as your have unknown variables, the 'system' is solvable (unless the equations are copies of eachother).

In this case, isolate one letter and plug it in the other. I'm going for the 2a in the bottom one (it doesn't matter)

2a - 4b = 12 => (divide by two and move the b's to the other side)

a = 6 + 2b. (plug this one into the top equation)

4(6+2b) + 6b = 10 => 24+8b+6b = 10 => 24 + 14b = 10 => 14b = -14 => b=-1

a = 6 + -2 = 4.

So a=4 and b=-1. 


4 0
3 years ago
PLZ HELP! Need this ASAP! Thx so much :)
saul85 [17]

they are giving you the answer AB=AC, so what that means is that the angles are congruent to each other so if angle AC=15 and angle DC=5 all the angles will be the same.

5 0
3 years ago
Alonzo deposits 300 into an account that pays simple interest at a rate of 4% per year . How much interest will he be paid in th
uranmaximum [27]

Answer:

1200 was is interested in the first 4years

5 0
2 years ago
Please help me :( A standard six-sided die is rolled. What is the probability that it is not a 4?
zmey [24]

Answer:

The answer is 5/6, or .833, 3 repeated.

Step-by-step explanation:

The 4 is only one side of the die, or 1/6 if the surface of the die. So the other part that is left is the other 5/6 of the surface.

6 0
2 years ago
Read 2 more answers
Other questions:
  • a bag contains eleven counters. five are white. a counter is taken out the bag and is not replaced. a second counter is taken ou
    11·1 answer
  • |-5| – 45 ÷ 3 <br> Explain how to solve
    14·1 answer
  • Mama had several notebooks. If she give 13 notebooks to each of her children, she will have 8 left. If she give 15 notebooks to
    12·2 answers
  • Calculate the mass of sodium azide (2NaN3) required to decompose and produce 1.20 moles of nitrogen.
    5·1 answer
  • Lily is buying candy for party favors. She needs 1.5 pounds of chocolates, 0.75 pounds of mints, and 15 lollipops. What is the t
    10·1 answer
  • I need help ASAP please!!!!!!
    11·2 answers
  • Molly bought 12.5 yards of fabric for 4.50 dollars a yard to make dog beds.she uses2.5 yards of fabric for each dog bed.she sell
    12·1 answer
  • Plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
    14·1 answer
  • NEED ASAP MATH!! 7TH GRADE
    13·1 answer
  • Yash can buy three pencils and have 49c change, or he can buy five pencils and
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!