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Phantasy [73]
2 years ago
8

What is the coefficient in the expression shown? 42 + 2c 2 42 c 2c

Mathematics
2 answers:
GaryK [48]2 years ago
6 0

Answer:

The coefficient is 2

iris [78.8K]2 years ago
4 0

Answer:

Step-by-step explanation:

There are two coefficients, one for x raised to the first degree, and the other for x raised to the zeroth degree (i.e. constant term). Thus: coefficient for the constant term : 42 (i.e. 42x^0=42).

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Find the 78th term of the arithmetic sequence –4,-2,0,...
MArishka [77]

The number is increasing by 2 every time.

78 x 2 = 156

-4 + 156 = 152

The 78th term is 152

8 0
2 years ago
Mr. palmer does an experiment to investigate the effects of distractions on studying and learning. he gives each participant a l
slamgirl [31]

According to the line of best fit, the number of words a person would remember after being distracted by 7 words will be 5 words. Option B. This is further explained below.

<h3>What is an experiment?</h3>

Generally, an experiment is simply a scientific technique used to produce a discovery, test a hypothesis, or show a previously unknown fact.

In conclusion, the experiment shows that according to the line of best fit 5words will be remembered after being distracted.

Read more about experiment

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8 0
2 years ago
PLSSSSSS!!!! HELP ME I WILL MARK YOU!!!!!!!!!!
joja [24]

Answer:

2.25

Step-by-step explanation: Replace the z with the value given (-18) and then multiply that by 1.1 you can then add it to 21.3 and then do the exponent

5 0
3 years ago
Read 2 more answers
A local car dealer claims that 25% of all cars in San Francisco are blue. You take a random sample of 600 cars in San Francisco
Delvig [45]

Answer:

Step-by-step explanation:

a) We would set up the hypothesis test.

For the null hypothesis,

p = 0.25

For the alternative hypothesis,

p ≠ 0.25

b) The test statistic to be used is the z test. The formula is

z = (P - p)/√pq/n

c) Considering the population proportion, probability of success, p = 0.25

q = probability of failure = 1 - p

q = 1 - 0.25 = 0.75

Considering the sample,

Sample proportion, P = x/n

Where

x = number of success = 141

n = number of samples = 600

P = 141/600 = 0.235

Therefore

z = (0.235 - 0.25)/√(0.25 × 0.75)/600 = - 0.85

d) Recall, population proportion, p = 0.25

The difference between sample proportion and population proportion is 0.25 - 0235. = 0.015

Since the curve is symmetrical and it is a two tailed test, the p for the left tail is 0.25 - 0.015 = 0.235

the p for the right tail is 0.25 + 0.015 = 0.265

These proportions are lower and higher than the null proportion. Thus, they are evidence in favour of the alternative hypothesis. We will look at the area in both tails. Since it is showing in one tail only, we would double the area

From the normal distribution table, the area below the test z score in the left tail 0.198

We would double this area to include the area in the right tail of z = 0.85. Thus

p = 0.198 × 2 = 0.396

e) Since alpha, 0.01 < than the p value, 0.396, then we would fail to reject the null hypothesis.

f) In a sample of 600 cars, we would observe a sample proportion of 0.015 or more away from 0.25 about 39.6% of the time by chance alone. Therefore, the sample result is not statistically significant because it could occur in 39.6% of the time by chance alone.

8 0
3 years ago
Y=-1/3x-9 in standard form
NemiM [27]
The standard form of a linear equation is Ax + By = C

So the answer is; 1x + 3y = 27

<em>Hope this helped! :)</em>
3 0
3 years ago
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