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2 years ago

- kobby is 5 years younger than Nana

Mathematics

2 answers:

viva [34]2 years ago

5 0

Kobby is 1 and nana 6

Darina [25.2K]2 years ago

4 0

Answer:

Kobby is 1 and Nana is 6

Step-by-step explanation:

lets mark Kobby's present age x, than Nana's present age would be x+5.

four years later Kobby's age would be x+4, and Nana's x+5+4, or 2(x+4).

x+5+4=2x+8

x-2x=8-5-4

-x=-1

x=1

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The number of chairs on a ski lift is inversely proportional to the distance between them a lift has 70 chairs when there’s spac

zhannawk [14.2K]

Answer:

Space between 80 evenly spaced chairs = 21m

Step-by-step explanation:

So, according to the given statement, we have the following expression:

No. of chairs ∝ $\frac{1}{Distance.Between.chairs}$

70 chairs are 24m apart, so it can be written as:

70 ∝ $\frac{1}{24}$

For, 1 chair , we divide both sides by 70

$\frac{70}{70}$ ∝ $\frac{1}{24(70)}$

1 ∝ $\frac{1}{24 (70)}$ -----------------------(Equation 1)

For 80 chairs:

Multiply both sides of Equation.1 by 80

80 ∝ $\frac{80}{24 (70)}$

80 ∝ $\frac{1}{21}$

So according to the above relation,

80 evenly spaced chairs will have a space of 21 m between them.

7 0

3 years ago

Subtract 1.05 from a certain number. Multiply the difference by 0.8, add 2.84 to the product then divide the sum by 0.01 and get

attashe74 [19]

Just do the whole process backwards
700*0.01=7
7-2.84=4.16
4.16/0.8=5.2
5.2+1.05=6.25

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3 years ago

What is an explicit equation for 5,8,11,14,17

astra-53 [7]

(17-5=12-1=11+8=19-2=(17-3=14)-3=11-3=8-3=5) wait maybe I got this mixed up with somthing else but...

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2 years ago

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aleksandr82 [10.1K]

First, we need to get the variable by it self.
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3 years ago

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AURORKA [14]

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