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3 years ago

PLEASE HELP!!!! WORTH 20 points it’s all I have show all of your work!!!!!!!

Mathematics

1 answer:

stiv31 [10]3 years ago

8 0

Answer:

Part A: [0,2], Part B: [2, 4], Part C: [8,10], Part D: 0 ft

Step-by-step explanation:

Part A: The time between 0 seconds to 2 seconds is the time when it's increasing. There is no other time like that.

Part B: The graph shows a straight line so therefore it is staying the same.

Part C: The graph shows a sharp decline.

Part D: Starting from the 10th second, the balloon already hit to ground so it would only make sense for it to stay there...

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What is 15/21 subtracted by 5/7 equal ?

Artemon [7]

Answer:

Step-by-step explanation:

Step 1: Make common denominators

What is the LCM of 21 and 7: 7

So, we need to convert both fractions into a 21 denominator.

15/21 * 1/1 = 15/21

5/7 * 3/3 = 15/21

Step 2: Subtract the numbers

15/21 - 5/7 is same as 15/21 - 15/21

15/21 - 15/21

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Answer: 0

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4 years ago

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In a sample of 1000 randomly selected consumers who had opportunities to send in a rebate claim form after purchasing a product,

Vadim26 [7]

Answer: 0.2872

Step-by-step explanation:

Given : In a sample of 1000 randomly selected consumers who had opportunities to send in a rebate claim form after purchasing a product, 260 of these people said they never did so.

i.e. n= 1000 and x= 260

⇒ Sample proportion : $\hat{p}=\dfrac{260}{1000}=0.26$

z-value for 95% confidence interval : $z_c=1.960$

Now, an upper confidence bound at the 95% confidence level for the true proportion of such consumers who never apply for a rebate. :-

$\hat{p}+ z_c\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$=0.26+ (1.96)\sqrt{\dfrac{0.26(1-0.26)}{1000}}$

$=0.26+ (1.96)(0.01387)=0.26+0.0271852=0.2871852\approx0.2872$

∴ An upper confidence bound at the 95% confidence level for the true proportion of such consumers who never apply for a rebate : 0.2872

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3 years ago

The expression (8-3)^2-(5-2)^2 is equivalent to what numerical expression

Tresset [83]

(8-3)²-(5-2)²
Follow the PEMDAS
P-Parenthesis
E-Exponents
M/D-Multiplication/Division
A/S-Addition/Subtraction
clear the numerals in the parenthesis:
(5)²-(3)²
Now do the exponents:
=25-9
=16
Its just: (5)²-(3)²

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3 years ago

A water sprinkler has a range of 5 meters as shown. The jet of water from the sprinkler sweeps out at an angle of 85° as the noz

Gemiola [76]

Answer

18.5 m²

Explanation

The figure is a sector of angle 85° and of radius 5 m.

The area = θ/360 × π × r²

= 85/360 × 3.14 × 5²

= 18.5347

The answer to one decimal place is 18.5 m²

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3 years ago

Add me fightingking450

Fantom [35]

Answer:

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