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Scorpion4ik [409]
3 years ago
15

I need some help I’ve been trying to figure this out for a while now and I keep coming up with different answers. Match the pair

s of equivalent expressions.

Mathematics
1 answer:
Flauer [41]3 years ago
3 0

Answer:

dccxxy<u>dffffyyyrtttttttyhg</u>

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A fifth-grade class completely covers a walkway with square tiles. The sides of each tile measure 3/4 ft as shown below. The len
padilas [110]
The answer is 180 ft squared
8 0
3 years ago
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Asha and Jamal are selling plants to raise money for their soccer team. They started out with 45 plants. They sold some plants a
sukhopar [10]
ANSWER

C. Both equations will find the correct solution.


EXPLANATION

It was given in the question that, Asha and Jamal started with 45 plants.


We were told that, they sold some plants and now they have 21 plants left.

Let
p
represent the number of plants sold.



Then when we add the number of plants sold and the number left, we should get 45.


This implies that,

21 + p = 45


This is Jamal's equation.


On the other hand, if we subtract the number of plants sold from the total number of plants, we should get 21. Thus,

45 - p = 21

This is Asha's equation.


The two equations are therefore equivalent.



They will give the same solution.


The correct answer is C.


3 0
4 years ago
Read 2 more answers
The lifetime of LCD TV sets follows an exponential distribution with a mean of 100,000 hours. Compute the probability a televisi
kondaur [170]

Answer:

0.9

0.3012

0.1809

230258.5

Step-by-step explanation:

Given that:

μ = 100,000

λ = 1/μ = 1 / 100000 = 0.00001

a. Fails in less than 10,000 hours.

P(X < 10,000) = 1 - e^-λx

x = 10,000

P(X < 10,000) = 1 - e^-(0.00001 * 10000)

= 1 - e^-0.1

= 1 - 0.1

= 0.9

b. Lasts more than 120,000 hours.

X more than 120000

P(X > 120,000) = e^-λx

P(X > 120,000) = e^-(0.00001 * 120000)

P(X > 120,000) = e^-1.2

= 0.3011942 = 0.3012

c. Fails between 60,000 and 100,000 hours of use.

P(X < 60000) = 1 - e^-λx

x = 60000

P(X < 60,000) = 1 - e^-(0.00001 * 60000)

= 1 - e-^-0.6

= 1 - 0.5488116

= 0.4511883

P(X < 100000) = 1 - e^-λx

x = 100000

P(X < 60,000) = 1 - e^-(0.00001 * 100000)

= 1 - e^-1

= 1 - 0.3678794

= 0.6321205

Hence,

0.6321205 - 0.4511883 = 0.1809322

d. Find the 90th percentile. So 10 percent of the TV sets last more than what length of time?

P(x > x) = 10% = 0.1

P(x > x) = e^-λx

0.1 = e^-0.00001 * x

Take the In

−2.302585 = - 0.00001x

2.302585 / 0.00001

= 230258.5

3 0
3 years ago
Based on the diagram below, what is the measure of arc DC?
Debora [2.8K]

Answer:

108 °

Step-by-step explanation:

∠DOC = 180° - 112° = 68°

∠DOC = 1/2(arc AB + arc DC)

68 = 1/2(y + 80 + y)

68 = y + 40

y = 28

arc dc = 80 + 28 = 108 °

7 0
3 years ago
Find the volume of the large solid without the smaller solid. The solid is a right solid and is not drawn to scale. Round answer
steposvetlana [31]

Answer:

b.

821.9 cube meters

Step-by-step explanation:

7 0
3 years ago
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