3 years ago

The ordered pair (-4, -5) is a solution of the following system of equations 2x+y=13 19x+13y=15

Mathematics

1 answer:

liberstina [14]3 years ago

8 0

Answer:

Step-by-step explanation

672

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I need a step by step instruction please

Alika [10]

Answer: $x=52$

Step-by-step explanation:

$x-45+45=7+45\\x=52$

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2 years ago

Can someone please help me

yulyashka [42]

This to numbers are equal

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3 years ago

The measure of an angle is 107.4 what is the measure of its supplemental angle ?

Alborosie

Answer:

72.6

Step-by-step explanation:

180-107.4 = 72.6

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3 years ago

4.in a recent year, the population of california was about 2.52x10^7 people. its land area is about 4.05x10^5 km^2. what was the

rjkz [21]

As given;

2.52x10^7 people are living in <span>4.05x10^5 km^2 area. then for 1km^2, the number of people can be calculated as:
people in 1km^2 = (2.52x10^7) / (</span><span>4.05x10^5)
=0.62x10^2
or
=6.2x10^1</span>

7 0

3 years ago

Read 2 more answers

Plz help, I don't get it

amm1812

Step-by-step explanation:

$(a+b)^{2} =a^{2} +2ab+b^{2}$

e.g.

$(x+9)^{2} =x^2+2(x)(9)+81$

$(x+9)^{2} =x^2+18x+81$

8 0

3 years ago