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seraphim [82]
3 years ago
5

What is the solution to the system of equations? {x+y=7x=y+3

Mathematics
1 answer:
abruzzese [7]3 years ago
7 0
<h3>Answer:</h3>

x=5, y=2

<h3>Explanation:</h3>

The second equation gives an expression for x that can be substituted into the first equation.

... (y+3) +y = 7 . . . . . .substitute y+3 for x

... 2y + 3 = 7 . . . . . . . colect terms

... 2y = 4 . . . . . . . . . . subtract 3 from both sides

... y = 2 . . . . . . . . . . . . divide both sides by 2

Using the expression for x, we can find its value.

... x = y + 3

... x = 2 + 3 . . . . . . . . . substitute for y

... x = 5

The solution is (x, y) = (5, 2).

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2 years ago
What is the property of 6x=72?
Andreyy89

Addition and multiplication are commutative property so that mean no.

In this case, you have to do division.

Your answer is 6x = 72

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Hope this helps :)

7 0
3 years ago
Read 2 more answers
Please help I’ll mark you as brainliest if correct
artcher [175]

Answer:

72 cm³ (see below)

Step-by-step explanation:

First, refer to the volume formula:

V = l · w · h

If you plug in all of your values and simplify, you'll get the volume:

l = 6 cm

w = 3 cm

h = 4 cm

V = (6) (3) (4)

V = 18 (4)

V = 72 cm³

Because this is volume, the measurements are units cubed, meaning it's cm³.

5 0
2 years ago
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Everett and Marie are going to make brownies for their family reunion. They want to make 4 times the amount of the recipe makes.
KonstantinChe [14]
2/3 x4 = 8/12 

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3 0
3 years ago
What is the value of the expression 9x1/3 to the second power + 2+4/7
wariber [46]
The expression is 9*\frac{1}{3}^{2}+2+\frac{4}{7}.

9*\frac{1}{3}^{2}+2+\frac{4}{7} ---> First square \frac{1}{3} by squaring the top and bottom number.

=9*\frac{1}{9}+2+\frac{4}{7}  ---> Multiply 9 and \frac{1}{9}

=1+2+\frac{4}{7} ---> Add

=3 \frac{4}{7} ---> Optional: turn into improper fraction

=\frac{25}{7}
6 0
3 years ago
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