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SVETLANKA909090 [29]
3 years ago
9

I don’t know this question

Mathematics
2 answers:
Lerok [7]3 years ago
8 0

Answer:

it can be 82 over 9 or 9.111111111

Step-by-step explanation:

Usimov [2.4K]3 years ago
4 0

Answer:

82/9 or 9.1 im not sure espero que te haiga ayudado

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Ratio help! *grade 9 work* help if you can :)
Bogdan [553]

Answer:

1. 10 : 24 = 5 : 12 = 20 : 48 = 40 : 96

2. 2 : 3 : 5 = 4 : 6 : 10 = 8 : 12 : 20

4 0
4 years ago
A motor scooter travels 20 mi in the same time that a bicycle covers 8 mi if the rate of the scooter is 4 mph more than twice th
aleksandr82 [10.1K]

We observe that 20 is 4 more than twice 8. This suggests the time is 1 hour and the rates are

... scooter: 20 mi/h

... bicycle: 8 mi/h

_____

You can let b represent the rate of the bicycle in miles per hour. Then we have (for time in hours and distance in miles) ...

... time = distance/speed

... time = 20/(2b+4) = 8/b

... 20b = 8(2b+4) = 16b +32

... 4b = 32

... b = 8

The rate of the bicycle is 8 mph; that of the scooter is 2*8+4 = 20 mph.

8 0
3 years ago
Determine whether each pair of ratios are equivalent ratios. Write yes or no.
Setler79 [48]

Answer:

MEOW.....................

Step-by-step explanation:

7 0
3 years ago
<img src="https://tex.z-dn.net/?f=y%2B%20%20%5Cfrac%7B13%7D%7B4%7D%20%20%3D%20%28x%5E2-%20%5Cfrac%7B1%7D%7B2%7D%20%29%5E2" id="T
zhenek [66]

Answer:    \bold{y=\dfrac{1\pm \sqrt{4x+13}}{2}}

<u>Step-by-step explanation:</u>

Inverse is when you swap the x's and y's and solve for y:

y+\dfrac{13}{4}=\bigg(x-\dfrac{1}{2}\bigg)^2\\\\\\x+\dfrac{13}{4}=\bigg(y-\dfrac{1}{2}\bigg)^2\rightarrow \text{(swapped the x's and y's)}\\\\\\\sqrt{x+\dfrac{13}{4}}=\sqrt{\bigg(y-\dfrac{1}{2}\bigg)^2}\rightarrow \text{(took square root of both sides)}\\\\\\\sqrt{\dfrac{4x+13}{4}}=\pm \bigg(y-\dfrac{1}{2}\bigg)}\rightarrow \text{(created common denominator in radical)}\\\\\\ \dfrac{\sqrt{4x+13}}{2}=\pm \bigg(y-\dfrac{1}{2}\bigg)}\rightarrow \text{(simplified radical)}

\pm \dfrac{\sqrt{4x+13}}{2}=y-\dfrac{1}{2}}\rightarrow \text{(divided both sides by}\ \pm )\\\\\\\dfrac{1}{2}\pm \dfrac{\sqrt{4x+13}}{2}=y\quad \rightarrow \text{(added}\ \dfrac{1}{2}\ \text{to both sides)}\\\\\\\dfrac{1\pm \sqrt{4x+13}}{2}=y\quad \rightarrow \text{(combined numerators)}

4 0
3 years ago
A scarf cost $17 after the 15% discount was applied. What is the original price?
sammy [17]
The correct answer is $20!!!

20-15%= 17
6 0
3 years ago
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