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zmey [24]
3 years ago
6

Which equation is part of solving the system by substitution?

Mathematics
2 answers:
gayaneshka [121]3 years ago
5 0

Answer:

4(11-y)²-3y²=8

Step-by-step explanation:

x+y=11

x=11-y

melomori [17]3 years ago
3 0

Answer:

a

Step-by-step explanation:

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Abigail and Spencer calculate the slope of the line between the points (3,-1) and (5,4) in different ways. Abigail calculates th
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3 years ago
A bag contains 9 tiles, each with a different number from 1 to 9. You choose a tile without looking, put it aside, choose a seco
Ksenya-84 [330]

Using the combination formula, it is found that there are 84 ways to choose the three tiles.

The order in which the tiles are chosen is not important, hence the <em>combination formula</em> is used to solve this question.

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

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

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

In this problem, three tiles are chosen from a set of nine, hence:

C_{9,3} = \frac{9!}{3!6!} = 84

There are 84 ways to choose the three tiles.

More can be learned about the combination formula at brainly.com/question/25821700

8 0
2 years ago
What is the present age of Alex if he is one- fourth the age of a his father and if the age of the father is doubled, it is 20 y
AURORKA [14]

take father's age as x

if it is doubled i.e 2x .we get the answer as 20 less than 100 which means 100-20=80

accordingly the equation will be 2x=80

x=40

given that ,

son is 1/4 th of his father

hence ,

son = 1/4×(x)

I.e, 1/4×40 =10

Hope it helps

6 0
3 years ago
5,300 milliliters to liters
kondaur [170]

Answer:

5.3L

Step-by-step explanation:

5,300 milliliters to liters

move decimal three to the left

5,300.00 ml is 5.3 L

3 0
2 years ago
Read 2 more answers
Your opening balance this month was $1,664.00. In the last thirty days you made the following purchases: $27.35, $54.15, and $12
Viktor [21]

Answer:

$1661.41875

Step-by-step explanation:

Since you purchased the following

$27.35,$54.15,$125

So let's add up

27.35+54.15+125

206.5

So let's determine the interest

1.25% of 206.5

1.25/100 ×206

258.125/100

2.58125

So we will have to deduct 2.58125 from the initial amount

1664-2.58125

1661.41875

So the amount left is $1661.41875

3 0
3 years ago
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