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Reika [66]
2 years ago
10

<br />How do I solve 2x+y=10

Mathematics
2 answers:
ololo11 [35]2 years ago
7 0
X is 3 y is 4 hope this helps :)
ira [324]2 years ago
4 0
Hello :
the system is : 
2x+y =10 ...(1)
x= 3y+4.....(2) 
subst in (1) :
2(3y+4)  +  y = 10
6y +8 + y= 10
7y=2
y= 2/7
x= 3(2/7)+4 = 34/7
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sarah spent a total of 10 on oranges and apples at the supet market. if she spent 3 dollars less for oranges than she did on app
beks73 [17]

Let's write 2 equations from the two statements given.

<em>Sarah spent 10 dollars on both oranges and apples</em>

<em />

Let the price of oranges be "x" and price of apples be "y", thus we can write:

x+y=10

Oranges cost 3 less than apples, thus we can say:

y-3=x

We can substitute this into the first equation and solve for y:

\begin{gathered} x+y=10 \\ y-3+y=10 \\ 2y=10+3 \\ 2y=13 \\ y=\frac{13}{2} \\ y=6.5 \end{gathered}

Thus, let's solve for x now,

\begin{gathered} x=y-3 \\ x=6.5-3 \\ x=3.5 \end{gathered}

We want the price of oranges (x), thus,

<em>Price of Oranges = $3.50</em>

3 0
1 year ago
Find the perimeter of a rectangle with sides (3x-5) and (-2x+10)
Vinil7 [7]
2(3x-5) + 2(-2x+10)
6x-10 + -4x+ 20

=2x+ 10
5 0
3 years ago
The value of y varies directly with x. If x = 218, then y = 436. What is
adell [148]

Answer:

<h2>x = 7</h2>

Step-by-step explanation:

To find the value of the value of x when

y = 14 we must first find the relationship between them

The statement

The value of y varies directly with x is written as

y \:  \:  \:  \alpha  \:  \:  \: kx

where k is the constant of proportionality

when x = 218

y = 436

So we have

436 = 218k

Divide both sides by 218

k = 2

So the formula for the variation is

<h2>y = 2x</h2>

when y = 14

We have

14 = 2x

Divide both sides by 2

<h3>x = 7</h3>

Hope this helps you.

5 0
3 years ago
. <br> Evaluate: 0.234 x 102.<br> 23,400<br> 234<br> 2.34<br> 23.4
inn [45]
Answer:

23.4

Explanation:

This is the closest answer to the answer I got, it might be wrong and it might not. My answer was 23.8!
4 0
2 years ago
Sample Response: The two conditional probabilities are not equal because each has different given events. P(A|D) has event D as
Ivan

The conditional probability illustrates that's there's a 2/8 that the event A occurs.

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

It should be noted that probability simply means the likelihood of the occurence of an event.

In this case, it can be delivered that P(AID) and P(DIA) aren't equal.

Hence, P(D|A) has event A as its given event, resulting in 2/8 for a probability.

Learn more about probability on:

brainly.com/question/24756209

#SPJ1

7 0
2 years ago
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