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3 years ago

Are point A,H,J, and D coplanar? explain

Mathematics

1 answer:

11Alexandr11 [23.1K]3 years ago

7 0

They are not coplanar because D is not on the same plane.

If you look at the plane made by the front face, it includes points A, B, E, F, J and H. However, C and D are on a different plane made by the back portion of the figure.

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erics cell phone service costs $40.00 a month for unlimited calls. he also pays $0.02 for each text message he sends. what equat

KatRina [158]

Answer:

40.021

Step-by-step explanation:

Unlimited calls = $40

Text message = $0.021

NOTE:There is a difference between the value you gave for cost of text messages in the question and the values given in the group of answers. I will use $0.021 for cost of text messages since it is common to all answer choices.

Total cost = Cost of unlimited calls + cost of text messages

C = $40 + $0.021

= $40.021

Therefore, the equation which represent the total cost in dollars for a month is 40.021

A. 40.021

3 0

3 years ago

Person A can make a cupcake in 5 minutes, Person B can make a cupcake in 9 minutes. In total they made 168 cupcakes. How many cu

Stolb23 [73]

Answer:

Person A made 108 cupcakes and person B made 60 cupcakes.

Step-by-step explanation:

Person A makes 1 cupcake in 5 minutes.

Say in x minutes A makes : $\frac{x}{5}$ cupcakes

Person B makes 1 cupcake in 9 minutes.

Say in x minutes B makes : $\frac{x}{9}$ cupcakes

Total cupcakes prepared by A and B in x minutes = 168

$\frac{x}{5}+\frac{x}{9}=168$

$\frac{14x}{45}=168$

$x=\frac{168\times 45}{14}=540$

So, cupcakes made by A = $\frac{540}{5}=108$

Cupcakes made by B = $\frac{540}{9}=60$

Person A made 108 cupcakes and person B made 60 cupcakes.

5 0

4 years ago

Joshua saves $325 every 5 months.How long will it take him to save $845? Explain how you determined your answer.

Klio2033 [76]

325/5 = $65 a month . 845/65= 13 months

5 0

3 years ago

In the diagram shown to the rig m

mr Goodwill [35]

I need it to can some one help us

4 0

3 years ago

A marketing research company needs to estimate which of two medical plans its employees prefer. A random sample of n employees p

Igoryamba

Answer:

the point estimate of the true proportion of employees is 0.401

Step-by-step explanation:

Given data

plan A = ( 0.241 , 0.561 )

to find out

the point estimate for estimating the true proportion of employees who prefer that plan

solution

we know that given data 98% confidence interval for the proportion of employees who prefer plan A: (0.241, 0.561) so point estimate for estimating the true proportion o employees who prefer that plan is p^E

and we can say here

lower limit = $p^{-E}$ = 0.241 ..............1

upper limit = $p^{+E}$ = 0.561 ...............2

now add these two equations 1 and 2

= $p^{-E}$ + $p^{+E}$

= $p^{-E}$ + $p^{+E}$ = 0.241 + 0.561

2 p = 0.802

2p = 0.806

p = 0.401

So the point estimate of the true proportion of employees is 0.401

4 0

4 years ago