Hence, the equation for the question (7) is $n + 19 = 84$ and equation for (8) is $3n = 12$ . It can be solved by linear equation in one variable.

What is a linear equation in one variable?

A linear equation in one variable is written as $ax+b = 0$ . Here, $a$ and $b$ are constants and $x$ is a variable.

(7)

Consider n number of baseball cards does Mike have. Since this is 19 less then the cards Allan have hence, as you add 19 in n then it will give 84.

$n + 19 = 84$

(8)

Consider the speed of Michelle is n. As, it is 3 times less than the speed of the Jamie hence, it you multiply 3 with n then it will give 12.

$3n = 12$

Hence, the equation for the question (7) is $n + 19 = 84$ and equation for (8) is $3n = 12$ .

Learn more about linear equation in one variable from the following link:

brainly.com/question/85774

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3 0

1 year ago

Pls help in this<br> 7.6x5.2

Nimfa-mama [501]

Answer:

39.52

Step-by-step explanation:

3 0

3 years ago

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I can’t figure out what it is asking. How do you find where each line crosses the y-axis?..

EleoNora [17]

They want you to find the y intercept. This is the point where the curve or line crosses the y axis. To find the y intercept, plug in x = 0

y = 3x+4
y = 3*x + 4
y = 3*0 + 4 ... notice x has been replaced with 0
y = 0 + 4
y = 4

So when x = 0, the value of y is y = 4. This means the y intercept is located at the point (0,4). This is all for problem 1. Problem 2 is handled much the same way.

8 0

3 years ago

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