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
Komok [63]
3 years ago
5

(4x+7)^2=60 how to do extracting the square root?

Mathematics
1 answer:
4vir4ik [10]3 years ago
8 0
(4x + 7)² = 60
(4x + 7)(4x + 7) = 60
(4x² + 28x + 28x + 49) = 60
4x² + 56x + 49 = 60
<u>                  -49   -49</u>
        4x² + 56x = 11
4x² + 56x - 11 = 11 - 11
4x² + 56x - 11 = 0
x = <u>-56 +/- √(56² - 4(4)(-11))</u>
                     2(4)
x = <u>-56 +/- √(3136 + 88)</u>
                     8
x = <u>-56 +/- √(3174)</u>
                 8
x = <u>-56 +/- 56.34</u>
               8
x = -7 +/- 7.0425
x = -7 + 7.70425       x = -7 - 7.70425
x = 0.70425              x = -14.70425
You might be interested in
Which expression is 5 times as large as the expression 345+23
natima [27]

Answer:

1840

Step-by-step explanation:

345+23=368*5

3 0
2 years ago
Read 2 more answers
Debbie has $460 in a savings account that earns 8% annually. If the interest is not compounded, how much interest will she earn
Bess [88]

She earned $184 in interest
$644 In all

Here's why:
The formula is Interest = Principal x Rate x Time
I = 460 x 8% x 5 or I = 460 x 0.08 x 5. PEMDAS
460(0.08) = 36.8
I = 36.8 x 5
36.8 x 5 = 184
I = $184
To find them in all, add the original amount she deposited with the interest.
460 + 184 = 644
In all: $644
6 0
3 years ago
Read 2 more answers
Help please I’d appreciate it
valentinak56 [21]

Answer:

I think it would be (5,6)

Step-by-step explanation:

The formula is (y,-x).

7 0
2 years ago
What is the slope of the line that passes through the points<br> (3, -7) and (-5, 17)?
MatroZZZ [7]
-3 is the slope, use y2 - y1 over x2 - x1 equation to solve
4 0
2 years ago
Okay, I'm going to be adding more but what is 4/10 x 3?
Marat540 [252]

Answer:

6/5 or 1 1/5

6/5 is an improper fraction, so I didnt know if youd need an improper one or a proper one. They both are the same thing though :)

Step-by-step explanation:

4/10*3

They both need to be a fraction, and any number over 1 = that number. So,

4/10*3/1

4*3=12

10*1=10

12/10

Then, you have to simplify the fraction.

6/5 (bc 2 goes into 12 6 times and 2 goes into 10 5 times)

or 1 2/10= 1 1/5

Hope this helps. Plz give brainliest. Also, plz sub to Kgirl633 on yt.

4 0
2 years ago
Read 2 more answers
Other questions:
  • Anyone know the answer?
    13·2 answers
  • 39/40 into a percent
    10·1 answer
  • How to write 999,858,411
    14·1 answer
  • Please please help me
    13·1 answer
  • Write the equation of the line the that is parallel to 21x-7y=12 and goes through the point (1, -3).
    10·1 answer
  • How does the shape of the parabola change when you move the focus toward the vertex?
    10·2 answers
  • Estimate the quotient using compatible numbers.<br><br> 3,512 ÷ 9<br><br> 30<br> 400<br> 300<br> 40
    8·1 answer
  • PLEASE HELP MEEEEE!!!!!
    8·2 answers
  • After paying a $10 admission fee, you walk into a carnival. A sign reads "$3 per ride". When your parent picks you up, they aske
    7·1 answer
  • Write 25 and 13 as equivalent fractions using a common denominator.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!