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3 years ago

Whats the solution of `-5y=-5` and `7x+6y=7`

Mathematics

1 answer:

san4es73 [151]3 years ago

8 0

Answer:

1. y = 1

2. x = 1 -6y/7 or y = 7/6 - 7x/6

Step-by-step explanation:

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Clive has a phone plan where he pays double his base per minute rate for any additional minute spent on a call over twenty minut

Sidana [21]

The two variables that we should use are:

x = number of minutes that the call lasted.
y = cost of that call.

<h3>What variables should we use?</h3>

Here we want to study a relation between the cost per call as the function of the minutes that the call lasted.

So, we need to use two variables, x will be the number of minutes that call lasted, this is the independent variable.

And the variable that depends on that should be the cost of the call, let's say, y is the cost of the call.

These are the two variables that we need to model the situation:

y = f(x)

There says:

<em>"The cost of the call is a </em><em>function </em><em>of the number of minutes that the call lasted".</em>

<em />

If you want to learn more about functions, you can read:

<em>brainly.com/question/4025726</em>

6 0

2 years ago

a party company hs chairs and tables for rent. The total cost to rent 3 chairs and 5 tables is $42. the total cost to rent 9 cha

scoray [572]

Answer:

ito

867$

Step-by-step explanation:

Sana makatulog

5 0

3 years ago

Read 2 more answers

Noah thinks the answers to these two questions will be the same. This year, a herd of bison had a 10% increase in population. If

Shalnov [3]

The answer to these two questions are not the same. We don't agree with Noah.

Reason:

Let's start with the first question.

1. Given: rate = 10% increase, base/original number = 550 bison

10% of 550 is:

$.10\times550bison=55bison$

10% of 550 is 55. Hence, there is an increase of 55 bison this year. This year, there are 550 + 55 = 605 bison in the herd.

2. Given: rate = 10% decrease, percentage/final number = 550 bison

Applying the concept of Percentage = Base x Rate, we can get the Base or the original number of bison before the decrease by dividing Percentage over Rate.

$\text{Base}=\frac{\text{Percentage}}{\text{Rate}}$

Filling in the formula with the given values in question 2, we have:

$\text{Base}=\frac{550}{1-.10}=\frac{550}{.90}=611.11\approx611bison$

Last year, there were 611 bison.

As we can see, the answer for number 1 is 605 bison while the answer for the number 2 is 611 bison. The answer of the two questions are not the same.

4 0

1 year ago

I help with this 7th grad math question

HACTEHA [7]

X=32
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7 0

3 years ago

Write the following mixed decimal as a mixed number and reduce to the lowest term 17.46 92.004

emmasim [6.3K]

17.46 as a mixed number is 17 23/50.
92.004 as a mixed number would be 92 1/250

3 0

4 years ago