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
My name is Ann [436]
4 years ago
12

5(2x - 8) + 15 = -15

Mathematics
2 answers:
Bad White [126]4 years ago
6 0
10x - 40 + 15 = -15 (use distributive)
10x - 25 = -15. add integers on left

10x = 10 add 25 to both sides
x = 1 divide by 10
pychu [463]4 years ago
4 0

Answer:

x = 1

Step-by-step explanation:

Given

5(2x - 8) + 15 = - 15 ( subtract 15 from both sides )

5(2x - 8) = - 30 ( divide both sides by 5 )

2x - 8 = - 6 ( add 8 to both sides )

2x = 2 ( divide both sides by 2 )

x = 1

You might be interested in
AABC has vertices at A(12, 8), B(4,8), and C(4, 14).
borishaifa [10]

Answer:

<u>Triangle ABC and triangle MNO</u> are congruent. A <u>Rotation</u> is a single rigid transformation that maps the two congruent triangles.

Step-by-step explanation:

ΔABC has vertices at A(12, 8), B(4,8), and C(4, 14).

  • length of AB = √[(12-4)² + (8-8)²] = 8
  • length of AC = √[(12-4)² + (8-14)²] = 10
  • length of CB = √[(4-4)² + (8-14)²] = 6

ΔMNO has vertices at M(4, 16), N(4,8), and O(-2,8).

  • length of MN = √[(4-4)² + (16-8)²] = 8
  • length of MO = √[(4+2)² + (16-8)²] = 10
  • length of NO = √[(4+2)² + (8-8)²] = 6

Therefore:

  • AB ≅ MN
  • AC ≅ MO
  • CB ≅ NO

and ΔABC ≅ ΔMNO by SSS postulate.

In the picture attached, both triangles are shown. It can be seen that counterclockwise rotation of ΔABC around vertex B would map ΔABC into the ΔMNO.

3 0
4 years ago
Whats prime factorization of 18 least to greatest?
nexus9112 [7]
18=2×3×3. hope it helps
8 0
3 years ago
4. Peter is calculating interest earned on a deposit of $275 in an account that earns 8% simple interest after 12 years.
tatuchka [14]

Answer:

a) He substituted 0.8 instead of 0.08.

b) $264

Step-by-step explanation:

From the question, the principal is p= $275, the rate is r=0.08, and the time is t=12 years.

We substitute into the formula to get:

I=prt

I=275 \times 0.08 \times 12 \\ I=264

a) The mistake is that, he substituted 0.8 instead of 0.08.

b) The correct amount is $264

6 0
3 years ago
Use a calculator to find the standard deviation of this data set: 8, 14, 13, 10, 17. Round your answer to the nearest tenth.
AlladinOne [14]

Answer:

3.5

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Solve for x in the equation 2xsquared-5+1=3.
gizmo_the_mogwai [7]

Answer:

x = 1.87

Step-by-step explanation:

2x^2 - 5 + 1 = 3

2x^2 = 3 + 5 - 1

2x^2 = 7

x^2 = 7/2

x = √3.5

x = 1.87082.....

x = 1.87 ( 3 significant figures )

4 0
3 years ago
Other questions:
  • N+35=98<br> what is n equal to
    5·2 answers
  • •<br> Evaluate 15 / (-3) + 5|1-21 / (-5)
    12·1 answer
  • two-eighths of the students are boys. If there are 13 boys in the class, how many students are there in all?​
    11·2 answers
  • If x=7 and y=7,then x=y​
    14·2 answers
  • Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).
    12·1 answer
  • How can bargain-shopping help spending?
    9·1 answer
  • If your class received a new student today, describe how you would teach the new student to perform the 90 degrees clockwise rot
    9·1 answer
  • What is 3 1/2 - 1 1/4<br><br><br> Subtract the fractions<br><br><br> Ty!
    5·1 answer
  • 8. Space Probe In 1989, the space probe Magellan was launched. It
    10·1 answer
  • A hiking trail is shown as 14cm on a map the scale is 1:150000 how far in km is it in real life.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!