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]
3 years ago
7

NEED HELP FAST WILL GIVE BRAINIEST

Mathematics
2 answers:
vladimir1956 [14]3 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]3 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
Eileen brought 8 roses for $45.50.Which is the best way to estimate the cost of one rose?
masya89 [10]

Answer:

50 divided by 8 is the best estimation. gives you 6.25


7 0
3 years ago
SOMEONE PLSLPLSSLSLS HELP ITS JUST 3 QUESTIONS BRO PLEASE ITS SO CONFUSING ILL BRAINLIST.
Vinil7 [7]

Step-by-step explanation:

a) Perimeter is equal to 2w + 2L

2(3x + 4) + 2(x + 3)

6x + 8 + 2x + 6

8x + 14

b) Put 5 in x's place

8×5 + 14

40 + 14

54

c) Area = (3x + 4) * (x + 3)

Put 4 in x's place

(3×4 + 4) * (4 + 3)

12 + 4 * 7

16 * 7

112

5 0
2 years ago
The area of a pentagon increased by 27 is the same as four times the area of the pentagon, minus 15. what is the area of the pen
Basile [38]
Set up an algebraic equation. This is what it looks like based on what the question tells you:

Let a = area of pentagon
a+27 = 4a-15
3a-15 = 27
3a = 42
a = 14
6 0
3 years ago
Jane is having difficulty deciding whether to put her savings in the Mystic Bank or in the Four Rivers Bank. Mystic offers a 12%
storchak [24]

Jane must therefore deposit her savings in the four rivers bank.

<h3>What is compound interest?</h3>

Interest that is added to a loan and deposit sum is known as compound interest. In our everyday lives, it is the notion that is employed the most frequently. Compound interest is calculated as a sum using the interest and principal accrued over time. Compound interest versus simple interest differ primarily in this way.

As per the data provided in the question,

Rate, r = 12%

After five years, the total amount, if Jane had saved at Mystic Bank,if Jane had saved at Mystic Bank would be:

A = P(1+\frac{r}{100} )^n

For compounded quarterly,

n = 5 × 4

n = 20

A = 40000(1 + 12/(4 × 100))²⁰

A = 72244.44     (i)

If Jane placed her savings with the Four Rivers, then,

A = 40000(1 + 14/(2 × 100))¹⁰

A = 40000 × 1.9671

A = 78686.054  (ii)

Therefore, it is evident that case (ii) is higher than case (i). Jane must therefore deposit her savings in the four rivers bank.

To know more about Compound Interest:

brainly.com/question/29335425

#SPJ1

6 0
1 year ago
I NEED HELP PLEASE! :)
Romashka-Z-Leto [24]

Circle equation: (x - h) + (x - k) = r²

(h, k) = center

r = radius

The center is (-7, 4)

To find the radius, take the square root of 49.

√49 = 7

The radius is 7.

Best of Luck!

6 0
3 years ago
Other questions:
  • Solve the equation <br> -10 + 3x + 5x = -56 ? ??
    6·2 answers
  • Miss Barton and three neighbors purchase a snowblower to share. If the snow blower cost for 439.20, describe how you can estimat
    9·1 answer
  • Isaac goes to an amusement park where tickets for the rides cost $10 per sheet and tickets for the shows cost $15 each.
    15·2 answers
  • PLEASE HELP!<br><br><br> What is the degree of the equation below?
    6·2 answers
  • Let a and b be rational numbers. Then by definition
    13·2 answers
  • 3. Mary wants to select one shirt (white, red, black), one pant (capri,
    8·2 answers
  • What is the value of x if x/4+2=15<br>Help!​
    8·2 answers
  • PLS HELP LOL, t is the value of the expression −100÷25? Enter your answer as an integer in the box.
    9·2 answers
  • Use the bar graph to find the experimental probability of the event. Write your answer as a fraction or percent rounded to the n
    9·1 answer
  • Find the exterior angle​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!