3 years ago

A student was trying to solve the problem below. look at their work and find the error.

Mathematics

1 answer:

Verizon [17]3 years ago

7 0

Answer:

line 4

Step-by-step explanation:

i just know.

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Find the product. 312 × 15 A.4,680 B.4,670 C. 1,872 D.1,862

lana [24]

Answer:

A. 4,680

Step-by-step explanation:

312*15=4,680

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3 years ago

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If someone could help me figure out #7 ASAP I’d really appreciate it

IceJOKER [234]

Answer: Angle N

Explanation:

For triangle ABC, we refer to the middle angle, Angle B.

For triangle MNP, we refer to its middle angle, Angle N.

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3 years ago

Number 12. Find angle ADE

mr_godi [17]

Answer:

ADE=59º

Step-by-step explanation:

4x+15+13x+7=90

17x+22=90

17x=68

x=4

angle B=angle ADE so we plug in x=4 into 13x+7

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The probability distribution histogram shows the number of days a book is checked out of a library. Find P(3 ≤ X < 12)

grin007 [14]

0.4 is your answer your welcome

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4 years ago

Lexie, a bowler, claims that her bowling score is more than 140 points, on average. Several of her teammates do not believe her,

Crazy boy [7]

Answer:

The test statistic is $t = 3.744$

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 140$

The The level of significance is $\alpha = 0.05$

The sample size is n = 18

The null hypothesis is $H_o : \mu = 140$

The alternative hypothesis is $H_a : \mu > 140$

The sample mean is $\= x = 155$

The standard deviation is $\sigma = 17$

Generally the test statistics is mathematically represented as

$t = \frac{\= x - \mu }{ \frac{ \sigma}{ \sqrt{n} } }$

substituting values

$t = \frac{ 155 - 140 }{ \frac{ 17 }{ \sqrt{18} } }$

$t = 3.744$

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3 years ago