3 years ago

HELP PLS AND THANKS

Mathematics

2 answers:

Agata [3.3K]3 years ago

5 0

90? I’m kinda rusty, i haven’t done this since sixth grades

alexandr402 [8]3 years ago

4 0

Answer:

B) 50°

I think

Step-by-step explanation:

Hope this helps

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there are two factors of -36 such thatone factor is 11 less than half of the other factor. choose all the pairs of these factors

aleksandrvk [35]

Let one factor be x. Second factor is 11 less than half of this factor, so second factor will be (0.5x - 11). The product of these two factors is -36.

So,

$-36=x(0.5x-11) \\ \\ 
-36=0.5 x^{2} -11x \\ \\ 
-72= x^{2} -22x \\ \\ 
 x^{2} -22x+72=0 \\ \\ x^{2} -18x-4x+72=0 \\ \\ 
x(x-18)-4(x-18)=0 \\ \\ 
(x-4)(x-18)=0 \\ \\ 
x=4, x=18$

If,
x = 4, the other factor will be = 0.5(4) - 11 = - 9
If,
x = 18, the other factor will be = 0.5(18) - 11 = -2

So, there are two possible set of factors.
1) 4 and -9
2) -2 and 18

From these -2 and 18 is available in the options. So this is the correct answer.

7 0

4 years ago

Last week the cost of a tank of gas increased by $1.64 express this increase as a mixed number in simplest form

puteri [66]

1 64/100 reduced equals 1 16/25

8 0

4 years ago

A manufacturer of batteries knows that 10% of the batteries produced by a particular production line are defective. A sample of

defon

I think you need only an answer without expanation so let's start.
a) $P = \frac{200!}{180!x20!} * 0,1^{20}*0,9^{180} = 0.093636$
b) $Probability = 0.5 + \frac{1}{2} (0.093636) = 0.54682$