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
Zepler [3.9K]
3 years ago
9

Choose all properties that were used to simplify the following problem:

Mathematics
2 answers:
kvv77 [185]3 years ago
8 0

Answer   commutative property of multiplication

multiplicative inverse

multiplicative identity

Step-by-step explanation:

ycow [4]3 years ago
4 0
All minus the addition
You might be interested in
Please show working out thanks
IgorLugansk [536]

Answer:

10m x 15m

Step-by-step explanation:

You are given some information.

1. The area of the garden: A₁ = 150m²

2. The area of the path: A₂ = 186m²

3. The width of the path: 3m

If the garden has width w and length l, the area of the garden is:

(1) A₁ = l * w

The area of the path is given by:

(2) A₂ = 3l + 3l + 3w + 3w + 4*3*3 = 6l + 6w + 36

Multiplying (2) with l gives:

(3) A₂l = 6l² + 6lw + 36l

Replacing l*w in (3) with A₁ from (1):

(4) A₂l = 6l² + 6A₁ + 36l

Combining:

(5) 6l² + (36 - A₂)l +6A₁ = 0

Simplifying:

(6) l² - 25l + 150 = 0

This equation can be factored:

(7) (l - 10)*(l - 15) = 0

Solving for l we get 2 solutions:

l₁ = 10, l₂ = 15

Using (1) to find w:

w₁ = 15, w₂ = 10

The two solutions are equivalent. The garden has dimensions 10m and 15m.

3 0
3 years ago
Stuart pays back two student loans over a 4-yr period. One loan charges the equivalent of 3% simple interest and the other charg
Ugo [173]

Answer:

The first loan L1 = $20,000

This is the loan with 3% simple interest

The second loan L2 = $4,000

This is the loan with 5.5% simple interest

Step-by-step explanation:

L1 + L2 = $24,000 ...(1)

4(3% of L1) + 4(5.5% of L2) = $3,280 ...(2)

Where the first term in equation (2) represents the total interest paid on loan 1 after 4 years

The second term represents total interest accruing to loan 2 after 4 years

From equation (1), we single out L1

L1 = 24,000 - L2

Substitute this value for L1 in equation (2)

288,000 + 10L2 = 328,000

L2 = $4,000

L1 = $24,000 - $4,000 = $20,000

5 0
3 years ago
Read 2 more answers
What is 4/5 divided 1/3
vova2212 [387]
The answer would be 2.4, or in fraction form 12/5. Please mark brainliest <3
5 0
2 years ago
Read 2 more answers
In her wallet, Ms. Thompson has one-dollar, five-dollar and ten-dollar bills totaling $171. She has the same number of five-doll
Phantasy [73]
 6 one-dollars = $6 15 five-dollars = $75 9 ten-dollars = $90 Add them all up to get $171, so that is correct. Add the number of one-dollar bills and the number of ten-dollar bills together. 6 + 9 = 15, which is the number of five-dollar bills, so that is correct as well. Add all the numbers of bills together, 6 + 9 + 15 = 15 + 15 = 30.
4 0
2 years ago
The areas of two similar octagons are 9 m² and 25 m². What is the scale factor of their side lengths? PLZ HELP PLZ PLZ PLZ
torisob [31]

Answer:

\frac{3}{5}

Step-by-step explanation:

Let the side length for the octagon having 9m² as area = x

Side length for the octagon having area of 25m² = y.

Thus:

\frac{9}{25} = (\frac{x}{y})^2 (area of similar polygons theorem)

The scale factor of their sides would be \frac{x}{y}. Which is:

\sqrt{\frac{9}{25}} = \frac{x}{y}

\frac{\sqrt{9}}{\sqrt{25}} = \frac{x}{y}

\frac{3}{5} = \frac{x}{y}

Scale factor of their sides = \frac{3}{5}

6 0
2 years ago
Other questions:
  • What os the mean of 90,90,100,95,95,85,100,100,80,100
    13·1 answer
  • What are the Swiss flag measurements
    14·1 answer
  • Suma numerelor de forma a4b cu produsul cifrelor 24 este egala cu
    12·1 answer
  • Round the following numbers to the nearest tens.<br>1. 352<br>Your answer​
    12·1 answer
  • Solve for (8x16.95)-7.50<br><br> THIS IS DUE IN ABOUT 12 MINUTES HURRY I NEED ANSWERS ASAP!!
    5·2 answers
  • Corey had 13 out of 15 answers correct on his math test.
    9·1 answer
  • Find the value of x, rounded to the nearest tenth?
    9·1 answer
  • A school administrator bought 6 desk sets. Each set consists of one table and one chair. He paid $48.50 for each chair. If he pa
    9·1 answer
  • HELP PLEASEEE!!
    14·1 answer
  • Let f(x) = xe^-x+ ce^-x, where c is a positive constant. For what positive value of c does f have an absolute
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!