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Gre4nikov [31]
3 years ago
9

The number of music CDs that Carl has in his collection is four less than triple the number of music CDs that Toni has in her co

llection. Define variable expressions for the number of music CDs that Carl and Toni have.
Let Tonis CD’s = x
How do I write an expression using x as the variable?
Mathematics
1 answer:
grigory [225]3 years ago
6 0
Ok, simple.
Carl has 4 less than triple the amount Toni has.
Toni has x amount of CDs.
Carl has 3x - 4 amount of CDs.

Hope this helps!
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finlep [7]

Donna sold 3 pencils and 8 pens solved using simultaneous equation

What is a simultaneous equation?

Simultaneous equation refers to related equations that are solved at the same to derive answers to the unknown variables

Let assume that X pencils were sold and Y pens were sold

The total revenue is the sum of the prices multiplied by the quantities sold.

2X+3Y=30   (equation 1)

The sum of X and Y sold is 11

X+Y=11   (equation 2)

multiply the second equation by 2

2*(X+Y=11)

2X+2Y=22 (equation 3)

subtract equation 3 from 1

(2X+3Y=30)-(2X+2Y=22)

Y=8

Substitute for Y in equation 2

X+8=11

X=11-8

X=3

Which means he sold 3 pencils and 8 pens.

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1 year ago
(x – 6)2 = y + 7, find the vertex.
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Would be the answer 16
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Does the relationship show a ratio or a rate?
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Step-by-step explanation:

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In an instant lottery, your chances of winning are 0.1. if you play the lottery five times and outcomes are independent, the pro
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The probability that you lose all five times will be 0.59.

<h3>How to calculate the probability?</h3>

From the information given, the chances of winning are 0.1. Therefore, the chance of losing will be:

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Therefore, the probability that you lose all five times will be:

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2 years ago
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professor190 [17]
Given that the garden is rectangular and a line of roses form the diagonal 18.4 m long, we required to calculate the length of the perpendicular side.
Here we shall use the Pythagorean theorem.
c²=a²+b²
where c is the hypotenuse, a and b are the legs.
from the information given:
c=18.4 m
a=13 m
plugging this into our expression we get:
18.4²=13²+b²
next we solve for the value of b
b²=18.4²-13²
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hence the length to the nearest tenth of a meter will be approximately 13.0 m
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