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kolezko [41]
3 years ago
13

Nigel tried to solve an equation step by step.

Mathematics
2 answers:
Sholpan [36]3 years ago
6 0

Answer:

He failed in step 1

Step-by-step explanation:

nevsk [136]3 years ago
3 0

Answer:

the answer should be h=22 so i would say step 1

Step-by-step explanation:

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Solve these simultaneous equations 2x+3y=13 4x-y=-2
Neko [114]
X = 1/2 y = 4 by elimination

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3 years ago
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Given Ohm's Law, V=IR<br> which of the following operations will solve for I<br> I?
poizon [28]

Answer:

Divide both sides by "R".

V = IR

V/R = I

Step-by-step explanation:

5 0
3 years ago
Try these calculations using the<br>graphing calculator:<br>31 x 42 -<br>443-637 -​
puteri [66]

Answer:

31 × 42 =  1,302

443 – 637 =  -194

Step-by-step explanation:

4 0
3 years ago
An exit poll in an election is a survey taken of voters just after they have voted. One major use of exit polls has been so that
3241004551 [841]

Answer:

P(A) = 0.39

Step-by-step explanation:

We are given;

P(W|A) = 0.7

P(W|A^c ) = 0.3

We are told that 60% of the respondents said they voted for A. Thus;

P(A|W) = 60% = 0.6

Now, using the principle of drawing lots, we can be able to find the probability of the event that they are willing to participate in the exit poll which is P(W).

Thus;

P(W) = [P(W|A) × P(A)] +[P(W∣A^c) × P(A^c)]

Now, P(A^c) can be expressed as 1 - P(A)

Thus, we now have;

P(W) = [P(W|A) × P(A)] + [P(W∣A^c) × (1 - P(A)]

Plugging in the relevant values gives;

P(W) = 0.7P(A) + 0.3(1 - P(A))

P(W) = 0.7P(A) + 0.3 - 0.3P(A)

P(W) = 0.3 + 0.4P(A)

Now,using Baye's theorem, we can find an expression for P(A|W)

Thus;

P(A|W) = [P(A ∩ W)]/P(W)

This can be further expressed as;

P(A|W) = [P(A) × P(W|A)]/P(W)

Plugging in relevant values, we have;

0.6 = 0.7P(A)/(0.3 + 0.4P(A))

Cross multiply to get;

0.6(0.3 + 0.4P(A)) = 0.7P(A)

0.18 + 0.24P(A) = 0.7P(A)

0.18 = 0.7P(A) - 0.24P(A)

0.46P(A) = 0.18

P(A) = 0.18/0.46

P(A) = 0.39

7 0
3 years ago
Enter the value of 6-\sqrt{19} to the nearest tenth
lana [24]

Answer: 1.6

Step-by-step explanation:

Calculator

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2 years ago
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