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VMariaS [17]
3 years ago
15

I need help with 9.) and 10 please help

Mathematics
1 answer:
Igoryamba3 years ago
6 0

Answer:

9. By every 10 seconds, the meters traveled increase by a constant of 8.5 meters.

10. (1,2), (2,4), (5,10), (8,16)

Step-by-step explanation:

For question 9, here is an example. You can find the constant of proportionality by dividing 85 by 10, which is 8.5. So every 10 seconds, the distance traveled in meters by the object will have multiplied by 8.5. You can also do 170 divided by 20, which is also 8.5 thus verifying our answer. Hope this helps you, sorry I couldn’t explain it better.

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Two supplementary angles are in a ratio of 1:2, What is the measure of the large
ElenaW [278]
The large angle = 120 degrees
Supplementary angles are two angles whose measures add up to 180°
Since we know from the ratio that one angle is twice the size of the other, the angles have to be 60 and 120.
4 0
3 years ago
8y+11= 6y + 11<br> solve for y<br> please help
mestny [16]

Answer:

y = 0

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

Step-by-step explanation:

<u>Step 1: Define</u>

8y + 11 = 6y + 11

<u>Step 2: Solve for </u><em><u>y</u></em>

  1. Subtract 6y on both sides:                    2y + 11 = 11
  2. Subtract 11 on both sides:                      2y = 0
  3. Divide 2 on both sides:                          y = 0
7 0
3 years ago
Read 2 more answers
8 cleaners can clean an office in 3 hours,if the block needs to be cleaned in 2 hours,how many cleaners will be needed?
romanna [79]

Answer:

12 cleaners

Step-by-step explanation:

8 cleaner can clean in 3 hours = 1 office

1 cleaner can clean in 3 hours = \frac{1}{8}  part of job

1 cleaner can clean in 1 hours = \frac{1}{3 \times 8}  part of job

Let the number of cleaner required to finish the job in 2 hours = x

hence

x cleaner can clean in 1 hours = \frac{1 \times x }{24}  part of job

x cleaner can clean in 2 hours = \frac{2 \times x }{24}  part of job

Hence

\frac{2 \times x }{24}=1

\frac{2x}{24}=1

2x=24

x=12

Hence we need 12 men to complete the same job in 2 hours

4 0
3 years ago
I would really appreciate it if someone could help me with question B and C thank you
Schach [20]

Answer:

(b) $91.70

(c) 131 miles

Step-by-step explanation:

(b) $0.95 * 65

    = $61.75

$61.75 + $29.95

    = $91.70

(c) $125 ÷ $0.95

    = 131.57894736

Rounded:  131 miles → *I think*

4 0
2 years ago
Which statement must be true to prove m&lt;1 + m&lt;2 + m&lt;3 = 180
choli [55]

Answer: A. it’s parallel

Step-by-step explanation:

just did my test.

7 0
3 years ago
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