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vodka [1.7K]
3 years ago
5

Is this problem right?

Mathematics
1 answer:
Andrews [41]3 years ago
6 0
Yes those are right. all the steps and answers are correct.
You might be interested in
Solve the compound inequality
Juli2301 [7.4K]

Answer:

<u>Given inequality:</u>

  • -5r + 7 ≥ -7 - 6r ≥ 4r + 3

<u>Solve in parts:</u>

  • -5r + 7 ≥ -7 - 6r ⇒ 6r - 5r ≥ -7 - 7 ⇒ r ≥ -14
  • -7 - 6r ≥ 4r + 3 ⇒ 4r + 6r ≤ -7 - 3 ⇒ 10r ≤ -10 ⇒ r ≤ -1

<u>Combine into one:</u>

  • -14 ≤ r ≤ -1

or

  • r = [-14, -1]
4 0
3 years ago
Calculate 12 x 15 by changing the numbers into friendlier numbers as we saw in the videos. Show how you work it out – write out
kondor19780726 [428]

Answer:

The product 12 × 15 in friendlier numbers is (10 + 2) × (10 + 5) = 180

Step-by-step explanation:

The parameter given are;

To 12 × 15 by changing the numbers into friendlier numbers

The product in 12 × 15 written with friendlier numbers (or in a simplified format can be given as follows;

12 × 15 = (10 + 2) × (10 + 5)

Which gives;

(10 + 2) × (10 + 5) = 10² + 10 × 5 + 2 × 10 + 2 × 5

From which we have;

10² + 10 × 5 + 2 × 10 + 2 × 5 = 100 + 50 + 20 + 10 = 180

Therefore;

12 × 15 = 180.

7 0
3 years ago
The sum of four consecutive evan numbers is 660. Find these numbers.
Margarita [4]

Answer:The numbers are 162,164,166,168,

Step-by-step explanation:

The solution is in the attached

8 0
2 years ago
4. Each set of data was collected from surveys to answer statistical questions. Select all of the data sets that represent numer
Ede4ka [16]

Answer:

Options (A), (C), (D) and (E).

Step-by-step explanation:

There are two types of sets in the given options.

1). Numerical data - Data which shows the numeral values or the numbers which tells the exact meaning of quantities like length, width or height.

2). Categorical data - Data which has no numeral values or no logical order.

Therefore, sets which show the numerical data are,

Option (A)

Option (C)

Option (D)

Option (E)

6 0
4 years ago
(30 points) Enter numbers to write 0.000328 in scientific notation.
Sloan [31]
0.000328= \cfrac{3.28}{10,000}=3.28*10^{-4}
4 0
3 years ago
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