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IceJOKER [234]
4 years ago
9

Which system of linear equations had a solution of (-2, 1) ?

Mathematics
1 answer:
Oksana_A [137]4 years ago
7 0
You are correct, the answer is b
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<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%20-%209%7D%7B15%7D%20%20%3D%20%20%5Cfrac%7B2x%20-%209%7D%7B10%7D%20" id="TexFor
vlabodo [156]
The answer is 2.25
Have a good day
7 0
3 years ago
Help i need some help pls
atroni [7]

Answer:

yes tell me if I am able then sure

4 0
3 years ago
Paul wants to know when gas would have cost about $1.50 per gallon. What step should he take?
EastWind [94]
 he should know how much gallons he need to fill his car up 
multiply 1.50 by the amount of gallons he need so he should know how much money to spend on that many gallons
hoped i helped and brainlist plz
3 0
3 years ago
Tamera spent ¼ of her school budget on notebooks. If she had a budget of $60.00, how much will she have left to spend?
Dominik [7]
<h3>multiply 60 by 1/4 to get the amount spent on notebooks</h3>

<h3>60 × ¼</h3>

<h3>= 15</h3>

<h3>next subtract 60 by 15 to get the amount Tamera has to spend for her other school supplies</h3>

<h3>60 - 15 = 45</h3>

<h3>your answer should be $ 45.00</h3>

hope that helps and plss let me know if you have any related questions :))

5 0
3 years ago
30/root 3-3 root 5<br> Ple answer this question
adoni [48]

\frac{30}{ \sqrt{3} - 3 \sqrt{5} } \\ \\ =\frac{30}{ \sqrt{3} - 3 \sqrt{5} } \times \frac{\sqrt{3} + 3 \sqrt{5}}{\sqrt{3} + 3 \sqrt{5}} \: \\ \\ that \: simply \: means \: multiplying \: by \: 1 \\ \\ \frac{30(\sqrt{3} + 3 \sqrt{5})}{ (\sqrt{3} + 3 \sqrt{5}) (\sqrt{3} - 3 \sqrt{5}) } \: \: \\ \\ by \: using \: formula \: {a}^{2} - {b}^{2} \\ \\ we \: get \\ \\ = \frac{30 \sqrt{3} + 90 \sqrt{5} }{ 3 - 45} \\ \\ = -  \frac{30( \sqrt{3} + 3 \sqrt{5}) }{42} \\ \\ =  - \frac{10( \sqrt{3} + 3 \sqrt{5}) }{14} \:  \:

4 0
3 years ago
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