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3 years ago

This is what i need help on

Mathematics

1 answer:

Scilla [17]3 years ago

7 0

G2=g1*2
g3=g1*2²
196=x*4
/4 /4
49

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2 5/7+4 3/5= help please

Ainat [17]

Answer:

$7\frac{11}{35}$

Step-by-step explanation:

$2\frac{5}{7}+4\frac{3}{5}$

add the whole numbers

$2+4=6$

combine the fractions

$\frac{5}{7}+\frac{3}{5}$

LCM is 35 because 7 * 5 =35

$\frac{5}{7}=\frac{5\cdot \:5}{7\cdot \:5}=\frac{25}{35}$

$\frac{3}{5}=\frac{3\cdot \:7}{5\cdot \:7}=\frac{21}{35}$

$\frac{25}{35}+\frac{21}{35}=\frac{25+21}{35}$

$=\frac{46}{35}$

change the improper fraction into mixed number

$6+1\frac{11}{35}$

$=7\frac{11}{35}$

3 0

4 years ago

The ratio of men to women working for a company is 3 to 4. If there are 112 employees total, how many work for the company

Ksenya-84 [330]

Answer:

112

Since you stated 112 employees work for the company, and your question was how many work for the company, it is definetly

112.

6 0

4 years ago

Read 2 more answers

The lengths of text messages are normally distributed with a population standard deviation of 4 characters and an unknown popula

umka21 [38]

Answer:

The answer is " $(25.32, 30.68)$ "

Step-by-step explanation:

Given:

$\bar x = 28\\\\ \sigma = 4\\\\n =26\\\\$

When $98\%$ confidence level so, the z:

$\alpha = 1 - 98\% = 1 - 0.98 = 0.2\\\\\frac{\alpha}{2} =\frac{0.02}{2} = 0.01\\\\Z_{\frac{\alpha}{2}} = Z_{0.01} = 1.645\ \ \ ( Using \ z \ table )\\\\$

$E = Z_{\frac{\alpha}{2} \times ( \frac{\sigma}{\sqrt{n}})$

$= 1.645 \times (\frac{4}{\sqrt{26}})\\\\=2.68$

When 98% confidence interval estimate of the population mean is,

$\bar x - E < \mu < \bar x + E\\\\28 - 2.68 < \mu < 28 + 2.68\\\\25.32 < \mu < 30.68\\\\(25.32, 30.68)\\\\$

7 0

3 years ago

0) During the school day, 4% of the time is spent in Opening Exercises. What fraction of the

Nesterboy [21]

Answer:

1/25

Step-by-step explanation:

4/100

1/25

4 0

3 years ago

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F(x) = x − 2 and g(x) = x2 − 7x − 9. Find f(g(−1)) A. -21 B.-3 C. 3 D.21

Alla [95]

Hello :
g(-1) = (-1)² -7(-1)-9 =1+7-9 = -1
f(g(−1)) = f(-1) = -1-2 = -3.....( answer : B)

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4 years ago