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notka56 [123]
3 years ago
14

What makes (a + 2)(b – 9) = 0 true?

Mathematics
2 answers:
prohojiy [21]3 years ago
5 0
B would have to equal 9 and a should equal -2 to get 0
Ainat [17]3 years ago
3 0
Hm answer a should be -2 and answer b should be 9
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Marrrta [24]

Answer:

x= -2

Step-by-step explanation:

-3x+6x+3=x-1

3x-x= -1-3

2x= -4

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6 0
3 years ago
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For a segment of a radio show a disc jockey can play 10 records. If there are 12 records to select from in how many ways can the
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Answer:

<h2>66 different ways </h2>

Step-by-step explanation:

This is a combination question. Combination has to do with selection. For example if r objects are to be selected from n pool of oblects, this can be done in nCr number of ways.

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= 12*11*10!/2*10!

= 12*11/2

= 6*11

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7 0
3 years ago
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ivanzaharov [21]
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3 0
3 years ago
Find the value of x that will make AB<br> А<br> 9x - 40<br> В.<br> 3x + 20<br> x = [?]
Charra [1.4K]

Answer:

x = 10

Step-by-step explanation:

∵ Both angle ∠A and are corresponding angles.

∠A = ∠B

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2 years ago
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