3 years ago

Only need the first question!!! Help me pls!! I’ll follow you and make brain list.

Mathematics

1 answer:

Alex787 [66]3 years ago

4 0

Answer:

Step-by-step explanation:

This is hard

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Read 2 more answers

Two angles of a triangle are 5x+20 and 2x+30 find the third angles

n200080 [17]

Answer:

Third angle is $130-7x$

Step-by-step explanation:

We have sum of angles is $180^{0}$

Let the third angle be $y$

Hence

$5x+20+2x+30+y=180\\\\y=130-7x$

Third angle is $130-7x$

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3 years ago

A publisher reports that 37% of their readers own a laptop. A marketing executive wants to test the claim that the percentage is

kumpel [21]

Answer:

0.1470

Step-by-step explanation:

Hypothesis : H_0:=0.37 Vs H_1: $\neq[\tex] 0.30The test statistic under H_o is given by ,Z=[tex]\frac{p-p_0}{\sqrt{(p_0 q_0)/n}}\rightarrow N(0,1)$

= $\frac{0.30-0.37}{\sqrt{0.37\times0.63/100}}$

= $\frac{-0.07}{\sqrt{0.00233}}$

=-1.45

P value : P value = 2*P ( Z > | Z cal | )

= 2*P ( Z > 1.45 )

= 2*0.07352

= 0.14704

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4 years ago