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Daniel [21]
3 years ago
10

Solve each equation using elimination. 2a+3b=12 5a- b=13

Mathematics
1 answer:
natita [175]3 years ago
8 0
\left \{ {{2a+3b=12} \atop {5a-b=13\ \ | *3}} \right. \\\\  \left \{ {{2a+3b=12} \atop {15a-3b=39}} \right. \\+-----\\ add\ both\ equations\\\\
17a=51\ \ \ | divide\ by\ 17\\\\
a=3\\\\
b=5a-13\\\\
b=5*3-13=15-13=2\\\\
b=2
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5 0
3 years ago
10 point to Help with this ?
DENIUS [597]

All the transformations for which A and B would be congruent are; Translation, Reflection, and Rotation.

<h3>What is congruence transformation?</h3>

A congruence transformation is defined as a movement of shape such that it can produce a shape that is congruent to the original.

There are three types of congruence transformation;

1. Translation

2. Reflection

3. Rotation

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Shape B is made by applying a single transformation to shape A.

Hence, All the transformations for which A and B would be congruent are; Translation, Reflection, and Rotation.

Learn more about transformations ;

brainly.com/question/11352944

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5 0
1 year ago
A bag contains five red marbles, fifteen black marbles, and ten white marbles. You pick one without looking. What is the probabi
aliya0001 [1]

Answer:

Step-by-step explanation:

5 red

15 black

10 white

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and because the is 5 red it would be 5/30

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that should be the answer but if you have to work the total all together then it would be 15/30

hope this helps :)

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