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erik [133]
2 years ago
13

Need help on this question asap please please thank you!

Mathematics
1 answer:
Nutka1998 [239]2 years ago
5 0

Answer:

see explanation

Step-by-step explanation:

The solutions to the systems of equations are at the points of intersection of the 2 graphed functions.

1

There are 2 points of intersection , so 2 solutions at

(0, - 3 ) and (4, 5 )

2

There is 1 point of intersection, so 1 solution at

(- 2, 5 )

3

There are no points of intersection , so no solution

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a parallelogram has one angle that measures 55 degrees. what are the measures of the other angles in the parrelogram.
Ugo [173]

a parallelogram has four sides so all its angles add up to make 360

the angle across from the 55 would also be a 55 equaling a 110 degrees angle leaving you with 250 so your other two angles both equal 125

3 0
3 years ago
What is 13/42 simplified ?
telo118 [61]

Answer:

that is actually 13/42

Step-by-step explanation:

cuz 13 cant be simplified by any number hope it help

7 0
2 years ago
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Jeff wants to make an a in his math course this semester. To do so, he must have an average of 90 or above. If his test scores t
Kobotan [32]
(88 + 92 + 96 + x) / 4 = 90
(276 + x) / 4 = 90
276 + x = 90 * 4
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3 years ago
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Find the value of the test statistic z using . The claim is that the proportion of adults who smoked a cigarette in the past wee
kolezko [41]

Correct question is;

The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.35, and the sample statistics include n = 1168 subjects with 385 saying that they smoked a cigarette in the past week. Find the value of the test statistic

Answer:

Test statistic is z = -1.46

Step-by-step explanation:

Let's first of all define the hypotheses:

Null hypothesis:

H0: p = 0.35, i.e 35% in the sample of 1,168 adults have smoked cigarettes in the previous week.

Alternative hypothesis:

Ha: p < 0.35, i.e less than 35% in the sample of 1,168 adults have smoked cigarette in the previous week.

The sample size is, n = 1,168 while the number of adults who smoked in the previous week would be; x = 385

Therefore, the sample proportion of adults who smoked in the previous week would be calculated as;

p^ = x/n = 385/1168 ≈ 0.3296

Now, from Central Limit Theorem for large samples, The sampling distribution of the sample proportion p^, will have a mean of μ = p = 0.35

Formula for standard deviation is;

σ = √[p (1 – p)/n]

σ = √(0.35 × (1 – 0.35)/1168)

σ = √0.0001947774

σ = 0.014

Formula for test statistic is;

z = (p^ - p)/σ

z = (0.3296 - 0.35)/0.014

z = - 1.46

3 0
3 years ago
Over the next 15 months you have to read more than 60 books. You have to read x books per
vovangra [49]

Answer:

4

Step-by-step explanation:

Divide 60 by 15, and you get 4.

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2 years ago
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