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Maksim231197 [3]
4 years ago
10

How can a solution to a system of linear equations be determined exactly by graphing?

Mathematics
1 answer:
givi [52]4 years ago
5 0
A solution something something and that’s the answer
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Find the intercept of x-y=4
tiny-mole [99]
X intercept : (4,0)

y intercept: (0, -4)
8 0
3 years ago
Read 2 more answers
David is 38 years old and his son Frank is 8. In how many years will David be twice as old as Frank?
Brut [27]
22 years.
38+22=60
8+22=30
60 divided by 2 = 30
6 0
4 years ago
A home owner wants to purchase two different chairs for the living room, one for in front of the fire place and one for in front
Ipatiy [6.2K]

Using the combination formula, it is found that photos of 9 different chairs were shown to the home owner.

The order in which the chairs are chosen is important, hence, the <em>permutation formula </em>is used to solve this question.

<h3>What is the permutation formula?</h3>

P_{n,x} is the number of different permutations of x objects from a set of n elements, given by:

P_{n,x} = \frac{n!}{(n-x)!}

In this problem, two chairs are chosen from a set of n, and there are 72 different outcomes, hence:

P_{n,x} = 72, x = 2

P_{n,x} = \frac{n!}{(n-x)!}

72 = \frac{n!}{(n-2)!}

72 = \frac{n(n - 1)(n - 2)!}{(n-2)!}

n^2 - n = 72

n^2 - n - 72 = 0

Which is a quadratic function with coefficients a = 1, b = -1, c = -72, hence:

\Delta = b^2 - 4ac = (-1)^2 - 4(1)(-72) = 289

Taking the positive root:

x_1 = \frac{-b + \sqrt{\Delta}}{2a} = \frac{1 + \sqrt{289}}{2} = 9

Photos of 9 different chairs were shown to the home owner.

You can learn more about the permutation formula at brainly.com/question/25925367

3 0
2 years ago
Kate bought a bag of grapes that was 3.2 pounds. The bag of grapes cost $6.24. What was the price per pound for the bag of grape
vagabundo [1.1K]

Answer:

$1.95

Step-by-step explanation:

3.2 pounds -> $6.24

1 pound -> $6.24÷3.2=$1.95

8 0
3 years ago
Paul wants a bike that cost $400. If he had saved 60% of this amount, how much had he saved.
enyata [817]
Hey!


To solve this problem, we'll first start by creating an equation.

<em>Our Created Equation :
</em>
\frac{400 x 60}{100}

Now we'll solve it step by step to find the answer.

So we should begin by multiplying the to portion of our fraction.

<em>400 x 60 = 24,000</em>

Next, we divide our answer by 100, since that is the next step to our equation.

<em>24,000 ÷ 100 = 240</em>

So, our answer is...

<em>Paul has already saved</em>  $240.00  <em>of the $400.00 he must pay for a new bike.</em>

Hope this helps!


- Lindsey Frazier ♥
4 0
3 years ago
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