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
umka21 [38]
2 years ago
10

Help doing test

Mathematics
1 answer:
Sphinxa [80]2 years ago
4 0

Step-by-step explanation:

2x^2+3x=20

5x^2=20

x^2=4

\times  = \sqrt{4}

x=2

You might be interested in
A principal of $3600 is invested at 7.5% interest, compounded annually. How much will the investment be worth after 6 years?
zaharov [31]

After 6 years the investment is $5555.88

Step-by-step explanation:

A principal of $3600 is invested at 7.5% interest, compounded annually. How much will the investment be worth after 6 years?

The formula used to find future value is:

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

where A(t) = Accumulated amount

P = Principal Amount

r = annual rate

t= time

n=  compounding periods per year

We are given:

P = $3600

r = 7.5 %

t = 6

n = 1

Putting values in formula:

A(t)=P(1+\frac{r}{n})^{nt}\\A(t)=3600(1+\frac{0.075}{1})^{6*1}\\A(t)=3600(\frac{1.075}{1})^6\\A(t)=3600(1.075)^6\\A(t)=3600(1.543)\\A(t)=5555.88

So, After 6 years the investment is $5555.88

Keywords: Compound Interest formula

Learn more about Compound Interest formula at:

  • brainly.com/question/4361464
  • brainly.com/question/12773544
  • brainly.com/question/2869849

#learnwithBrainly

8 0
3 years ago
Tam multiplied 2.13 and 4.62, as shown. But he forgot to put a decimal point in his
yuradex [85]
The decimal gives after the 9. There are four places behind the decimal between the two numbers being multiplied so there have to be 4 places behind the decimal in your answer.
8 0
2 years ago
Read 2 more answers
Y= x^2 -5 solve for x
dexar [7]

Y= x^2 -5

We need to solve for x, we need to get x alone

Y= x^2 -5

Lets start by removing -5

Add 5 on both sides

y + 5= x^2 -5 + 5

y + 5= x^2

Now to isolate x , we need to remove the square from x

To remove square , take square root on both sides

+-\sqrt{y+5} = \sqrt{x^2}

square and square root will get cancelled

+-\sqrt{y+5} = x

So x = +\sqrt{y+5} and  x = -\sqrt{y+5}


7 0
3 years ago
How do u write 3 less than 9 times h
Veronika [31]
3<9h I hope this helps you
3 0
3 years ago
Read 2 more answers
Represent the following sentence as an algebraic expression, where "a number" is the letter x. You do not need to simplify.
My name is Ann [436]
<h3>Answer:  (2x)^3</h3>

Work Shown:

x = some unknown number

2x = twice the number

(2x)^3 = cubing the previous result

If you want to simplify this expression, then you would get 8x^3 since 2^3 = 8.

4 0
2 years ago
Other questions:
  • Which number line correctly shows 2 2/5, 2 4/5, and 11/5?
    15·1 answer
  • Which side lengths form a right triangle?
    11·1 answer
  • On the njmber line below, the numbers x and y are the same distance from 0. What is x + y? Explain how you found your answer
    7·1 answer
  • Jamal bought donuts and cupcakes. He bought three times as many donuts as cupcakes. Donuts cost $0.50 each. Cupcakes cost $1.00
    9·1 answer
  • Sue Anne owns a medium-sized business. The probability model below describes the number of employees that may call in sick on an
    14·1 answer
  • Can you help me please now
    5·1 answer
  • If 30% of students failed their last test, and there were 40 students that took the test, how many students failed?
    8·1 answer
  • F(x)=-4x - 10 find x when f(x)=10
    6·1 answer
  • Please help!What exponent must replace the "?" to make the equation true? <br> (3a) ?(302)2 = 35a?
    5·1 answer
  • PLEASE HELP ITS URGENT DONT GUESS (also if you get it right ill mark you as brainliest)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!