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
maxonik [38]
3 years ago
12

I need help please?!!!

Mathematics
1 answer:
masha68 [24]3 years ago
4 0

Answer:

-5

Step-by-step explanation:

7c and the opposite of 7c cancel out. 7c + (-7c) = 7c - 7c = 0 so the rest is -5

You might be interested in
Please help. What are the measures of ∠a, ∠b, ∠c and ∠d? Explain how to find each of the angle measure.
MissTica

Angle a has a little square box in it, which means right angle, which is equal to 90 degrees.

Angle A = 90 degrees

Angle A m B and the 59 forms a straight line which needs to equal 180

Angle B = 180 - 59 - 90 = 31

Angle B = 31 degrees.

Angle C is a vertical angle with A and B, so Angle C = 90 + 31 = 121 degrees.

Angle D is a vertical angle with 59, so equals 59 degrees.

4 0
3 years ago
Can someone help me with factoring by grouping please show step by step
ValentinkaMS [17]
Answer is 3-110x

3 times 1 squared - 11 times 10
1 raised to any power equals 1

calculate the product
3 times 1 -110x

any expression multiplied by one stays the same
3-110x

i hope this helped! thanks!
4 0
3 years ago
What is the area of these
kumpel [21]

Step-by-step explanation:

The area of a triangle is calculated by multiplying height to the base and that divided by two

G.

13 × 20 ÷ 2 = 130 ft^2

H.

11 × 4 ÷ 2 = 22 ft^2

6 0
3 years ago
A contractor is building a pool labeled ABCD on the plans. If AC = 5y + 6 and BD = 8y-3, what value of y ensures the pool is a r
KIM [24]

The value of y that ensures the pool is a rectangle is 3. Option D

<h3>How to determine the value</h3>

The formula for perimeter of a rectangle is expressed as;

Perimeter = 2 ( length + width)

It is important to note that parallel sides of a rectangle are congruent, that is, they are equal.

Given the sides as;

  • AC = 5y + 6
  • BD = 8y-3

5y + 6 = 8y -3

collect like terms

5y - 8y = -3 - 6

-3y = -9

Make 'y' the subject

y = 3

Thus, the value of y that ensures the pool is a rectangle is 3. Option D

Learn more about rectangles here:

brainly.com/question/25292087

#SPJ1

3 0
2 years ago
A rate compares two quantities that have<br> Blank…<br> unit
Maksim231197 [3]

Answer:

A rate compares two quantities that have

Blank…

unit

4 0
2 years ago
Other questions:
  • I need help on 12, I don't know how to make that an expression! Thanks! Please explain!
    12·1 answer
  • Can anybody help me with questions 17-23?
    10·1 answer
  • Identify the slope of the following equation . 5x+6y=4​
    11·2 answers
  • 67 times a number minus 58 is equal to 36 less than the number
    11·1 answer
  • Which of the following correctly expresses the number in scientific notation 645,000,000
    5·1 answer
  • Cost of wood is $9.50. How much would it cost Matt to buy 2 1/2 metres?
    11·1 answer
  • Linda is making a mosaic stepping stone to place in
    15·1 answer
  • PLEASE HELPP !! The ceiling of Stacy's living room is a square that is 25 ft long on each side. Stacy knows the diagonal of the
    10·1 answer
  • Please help this is due in about three minutes
    11·1 answer
  • Answer Choices:
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!