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docker41 [41]
3 years ago
14

A scientific calculator has 42 buttons. There are twice as many grey buttons as orange buttons. There are two more white buttons

than grey buttons. There twice as many black buttons as white buttons. WRITE AN EQUATION TO CALCULATE HOW MANY BUTTONS OF EACH COLOUR THERE ARE. LET X REPRESENT THE NUMBER OF ORANGE BUTTONS.
Mathematics
1 answer:
Arlecino [84]3 years ago
5 0

Answer:

x + 2x + 2x + 2 + 4x + 4 = 42

Step-by-step explanation:

Let us assume the number of orange buttons be x

So, the grey buttons be 2x

The white buttons would be 2x + 2

And the black buttons be 2(2x + 2) i.e. 4x + 4

Also the total is 42 buttons

So, the equation is

x + 2x + 2x + 2 + 4x + 4 = 42

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RoseWind [281]

The total mass of the living things on the farm is 588 kg.

<h2><u>Mass calculation</u></h2>

Since on a farm there was a cow, 2 sheep and 3 chickens, to determine what is the total mass of the 1 cow, the 2 sheep, the 3 chickens, and the 1 farmer on the farm, the following calculation must be performed :

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  • 588 = X

Therefore, the total mass of the living things on the farm is 588 kg.

Learn more about mass calculation in brainly.com/question/14695611

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2 years ago
A spinner has an equal chance of landing
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Answer:

1/15

Step-by-step explanation:

since there are 3 equal colors, they're all 1/3

since it's 5, it's 1/5

1/5 x 1/3

1/15

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Are used car was purchased for 7,800 one year later it was worth 6,400 what is the percentage depreciation
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Step-by-step explanatio 16%

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3 years ago
There are 36 ribbons of which 1/5 are yellow, 7/15 are pink and the remaining ribbons are
Kay [80]

Step-by-step explanation:

Let there be x blue ribbons

\therefore \:  \frac{1}{5}  +  \frac{7}{15}  + x = 36 \\   \therefore \:  \frac{1 \times 3}{5 \times 3}  +  \frac{7}{15}  + x = 36 \\ \therefore \:  \frac{3}{15}  +  \frac{7}{15}  + x = 36 \\ \therefore \:  \frac{3 + 7}{15}   + x = 36 \\ \therefore \:  \frac{10}{15}   + x = 36 \\ \therefore \: x = 36 -  \frac{10}{15} \\ \therefore \: x =  \frac{36 \times 15 - 10}{15} \\ \therefore \: x =  \frac{540 - 10}{15} \\ \therefore \: x =  \frac{530}{15} \\ \therefore \: x =  35\frac{5}{15}  \\ \\  \therefore \: x =  35\frac{1}{3} \: are \: blue.  \\

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3 years ago
If g is the inverse of the function f(x) = sqrt(x - 6) - 10 , which of the following is g?
iren2701 [21]

Answer:

  • g(x) = x² + 20x + 106

Step-by-step explanation:

<u>Given:</u>

  • f(x) =\sqrt{x-6}-10

If g(x) is the inverse of f(x), find it.

<u>Swap x with g(x) and f(x) with x:</u>

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<u>Solve for g(x):</u>

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3 0
2 years ago
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