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3 years ago

(a) An engineer designs an improved light bulb. The previous design had an average lifetime of

Mathematics

1 answer:

Tatiana [17]3 years ago

3 0

Answer:

C. that the sample size is very large.

Step-by-step explanation:

Here the sample size is large which results in the p-value being less. As a result, reject the null hypothesis, and the effect was thus statistically significant.

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In 2001, the value of a plot of land is $12,000. Each year, the value of the plot increases by 8%.

olga2289 [7]

F(x)=12,000(1.08)^x

The answer is the first equation.
The equation increases so 1 is added to 0.08 (8%).

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4 years ago

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Need help with Geography #10 true or false and explain<br> <1 and <2 are supplementary?

Slav-nsk [51]

False. Supplementary angles have to add up to 180 degrees, and that is clearly not a flat line lol

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3 years ago

A mother shares a box of 20 chocolates in the same ratio as her children's ages . Calculate how many chocolates each child gets

Anni [7]

So a box of 20 chocolates is divided between a group of people based on age So the ratio for Sibusiso, Dorris, and Freddy is 2:3:5 Add these together, and you get 10 So to find how much each person gets, divide total amount of chocolates by total age So (20÷10) = 2 So multiply each age term by 2 and you have your answer (4:6:10) So Sibusiso gets 4, Dorris gets 6 and Freddy gets 10

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3 years ago

The height of a triangle is 2 less than 5 times its base. If the base of the triangle is x feet, and the area of the triangle is

Gnesinka [82]

Answer:

A. 5x^2 − 2x − 24 = 0

Step-by-step explanation:

height = 5b-2

b =x

We can rewrite the height as

h = 5x-2

We know the formula for area of a triangle

A = 1/2 bh

A =1/2 x * (5x-2)

Distributing the x

A= 1/2 (5x^2 - 2x)

We know A =12

12 = 1/2 (5x^2 - 2x)

Multiply each side by 2

12*2 = 2*1/2 (5x^2 - 2x)

24 = 5x^2 - 2x

Subtract 24 from each side

24-24 = 5x^2 - 2x-24

0 = 5x^2 - 2x-24

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3 years ago

Explain the Error: Jayme tells her friend that ordered pairs that have an x-coordinate of O lie on the x-axis. She uses the orig

Paul [167]

Answer:

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Step-by-step explanation:

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3 years ago