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emmainna [20.7K]
3 years ago
13

What is the solution to the system of equations

Mathematics
2 answers:
kondor19780726 [428]3 years ago
6 0

Answer:

lg study ng lucky sly we its go cu u such

Gnesinka [82]3 years ago
5 0
Answer: x=-4, y=-7

Problem:
4x-6y = 26
5x-4y=8

You can use substitution or elimination to solve the problem. I’m going to use elimination.

Multiply by -2 => -8x+12y = -52
Multiply by 3 => 15x- 12y = 24

Add those equations together:
7x=-28
x=-4
Plug that into one of the original equations to get y.

4(-4)-6y=26
-16 - 6y=26
-6y=42
y=-7

Check for the other equation to see if this is true. Which in this case it is. So that’s your answer. x=-4, y=-7
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What is –3 2/3 · (–2 1/4 )?
algol [13]
-3\frac{2}{3}\cdot\left(-2\frac{1}4{}\right)=\\--------------------\\negative\ number\ multiply\ by\ negative\ number\ is\ a\ positive\ number\\--------------------\\-3\frac{2}{3}\cdot\left(-2\frac{1}4{}\right)=3\frac{2}{3}\cdot2\frac{1}{4}=\\------------------------------\\

if you want to multiply mixed numbers you need to turn them into improper fractions

3\frac{2}{3}\cdot2\frac{1}{4}=\frac{3\cdot3+2}{3}\cdot\frac{2\cdot4+1}{4}=\frac{9+2}{3}\cdot\frac{8+1}{4}=\frac{11}{3}\cdot\frac{9}{4}=\frac{11}{1}\cdot\frac{3}{4}=\frac{11\cdot3}{1\cdot4}\\\center\boxed{=\frac{33}{4}=8\frac{1}{4}}

6 0
3 years ago
10 points pls answer ASAP
boyakko [2]

Answer:

145

Step-by-step explanation:

Its the opposite angle of 145

7 0
3 years ago
Ok last question plz help me with the question for this topic dont wanna get it wrong
Crank

For this problem plug in the given x and y values:

For the first one: No

second one: No

third one: Yes

fourth one: No

7 0
4 years ago
Read 2 more answers
Sergei estimated 149% of 67 by performing the following steps. Which statement is true?
enot [183]

Answer: Last option.

Step-by-step explanation:

In order to estimate the percent "n" of a number"x", you need easy numbers to work with, therefore you can round  "n" and "x" up or down; but it is important to remember that this estimation does not give you an exact value.

You can observe that Sergei's first step was to round 149% and 67 up, getting this result:

=105

To verify if this estimate is less or greater than the actual answer, we can find the actual answer. This is:

\frac{67*149}{100}=99.83

Therefore, we can conclude that<em> the estimate is greater than the actual answer because the percent and the number were both rounded up</em>.

4 0
3 years ago
Read 2 more answers
What is the measure of a°?
yuradex [85]

Answer:

<u>The correct answer is C. 129.</u>

Step-by-step explanation:

Let's recall that the Inscribed Quadrilateral Theorem states that a quadrilateral is inscribed in a circle if and only if the opposite angles are supplementary.

In the case of the inscribed quadrilateral ABCD in the graph attached, we have that:

m∠C= 51°, therefore its supplementary angle, ∠A, should be the difference between 180° and m∠C.

m∠C= 180° - m∠A

Replacing with the real values:

51 = 180 - m∠A

m∠A = 129°

<u>The correct answer is C. 129.</u>

4 0
3 years ago
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