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2 years ago

12

NEED HELP WITH THIS ASAP

2 answers:

Ivan2 years ago

5 0

Answer:

a

Step-by-step explanation:

ab and cd have parrel line symbols. Hope this helps!!!!!

Liono4ka [1.6K]2 years ago

4 0

Answer:

ab dc

Step-by-step explanation:

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It takes Natalie five hours to tar a roof. Imani can tar the same roof in ten hours. How long would it take them if they worked

tresset_1 [31]

Answer:

C. 3.33 hours

Step-by-step explanation:

Use the algebra work equation:

$\frac{1}{tb}$ = $\frac{1}{t1}$ + $\frac{1}{t2}$ , where tb is the time to work together, t1 is the time it takes one person, and t2 is the time it takes the other person

Plug in the values we know:

$\frac{1}{tb}$ = $\frac{1}{5}$ + $\frac{1}{10}$

$\frac{1}{tb}$ = $\frac{4}{20}$ + $\frac{2}{20}$

$\frac{1}{tb}$ = $\frac{6}{20}$

20 = 6tb

3.33 = tb

So, it would take them 3.33 hours when working together.

5 0

3 years ago

The football team has a total of 50 jerseys. There are 10 medium-sized jerseys. What percent of the jerseys are medium-sized j

mrs_skeptik [129]

Answer:

it is 20% your welcome

Step-by-step explanation:

because when you divide 100 by 2 its 50 so its 20%

5 0

3 years ago

Read 2 more answers

A pink crayon is made with 12\text{ mL}12 mL12, space, m, L of red wax for every 5\text{ mL}5 mL5, space, m, L of white wax. Whi

Sedaia [141]

Answer:

D 36 ML of red wax mixed with 15 ML of white wax AND

E 60 ML of red wax mixed with 25 ML of white wax

Step-by-step explanation:

just listen to me im big brain

4 0

3 years ago

A past survey of students taking a standardized test revealed that % of the students were planning on studying engineering in c

Angelina_Jolie [31]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The 95% confidence interval is $-0.00870$

Step-by-step explanation:

From the question we are told that

The first sample size is $n_1 = 1068000$

The first proportion $\r p_1 = 0.084$

The second sample size is $n_2 = 1476000$

The second proportion is $\r p_2 = 0.092$

Given that the confidence level is 95% then the level of significance is mathematically represented as

$\alpha = (100 - 95)\%$

$\alpha = 0.05$

From the normal distribution table we obtain the critical value of $\frac{ \alpha }{2}$ the value is

$Z_{\frac{\alpha }{2} } =z_c= 1.96$

Now using the formula from the question to construct the 95% confidence interval we have

$(\r p_1 - \r p_2 )- z_c \sqrt{ \frac{\r p_1 \r q_1 }{n_1} + \frac{\r p_2 \r q_2 }{n_2} }$

Here $\r q_1 = 1 - \r p_1$

=> $\r q_1 = 1 - 0.084$

=> $\r q = 0.916$

and

$\r q_2 = 1 - \r p_2$

=> $\r q_2 = 1 - 0.092$

=> $\r q_2 = 0.908$

So

$(0.084 - 0.092 )- (1.96)* \sqrt{ \frac{0.092* 0.916 }{1068000} + \frac{0.084* 0.908 }{1476000} }$

$-0.00870$

3 0

3 years ago

What is the distributive property of 56 divided by 4

gizmo_the_mogwai [7]

(40+16)=56 or

(4x10)+(4x4)=56 or

4x(10+4)=56

7 0

3 years ago

Read 2 more answers