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2 years ago

Twenty-one is 25% of what number?

Mathematics

2 answers:

choli [55]2 years ago

8 0

The answer is 84

Because 1/4 (25/100) of 84 would be 21

I hope this helps!!! :)

ivolga24 [154]2 years ago

5 0

The answer is 84 because 21 times 4 is 84 my answer is late someone answer it already lol

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Hola

coldgirl [10]

Vertex is (-5,-10) y intercept of g is (0,-1) zeroes of h are x=-3,1

8 0

1 year ago

A plastics manufacturer has developed a new type of plastic trash can and proposes to sell them with an unconditional 6-year war

gtnhenbr [62]

Answer:

since -3.73 is less than 1.645, we reject H₀.

Therefore this indicate that the proposed warranty should be modified

Step-by-step explanation:

Given that the data in the question;

p" = 13/20 = 0.65

Now the test hypothesis;

H₀ : p = 0.9

Hₐ : p < 0.9

Now lets determine the test statistic;

Z = (p" - p ) / √[p×(1-p)/n]

= (0.65 - 0.9) /√[0.9 × (1 - 0.9) / 20]

= -0.25 / √[0.9 × 0.1 / 20 ]

= -0.25 / √0.0045

= -0.25 / 0.067

= - 3.73

Now given that a = 0.05,

the critical value is Z(0.05) = 1.645 (form standard normal table)

Now since -3.73 is less than 1.645, we reject H₀.

Therefore this indicate that the proposed warranty should be modified

3 0

1 year ago

Differentiate: y=152+26−37 dy/dx= answer

ozzi

Answer:

$\frac{dy}{dx} y=0$

General Formulas and Concepts:

Calculus

The derivative of a constant is equal to 0

Step-by-step explanation:

Step 1: Define function

y = 152 + 26 - 37

Step 2: Simplify

Combine like terms

y = 141

Step 3: Find derivative

Derivative of any constant will be 0.

$\frac{dy}{dx} y=0$

8 0

2 years ago

What is 86.69 rounded to the nearest dollar?

xxMikexx [17]

86.60 rounded to the nearest dollar would be 87 dollars

5 0

2 years ago

Read 2 more answers

When you multiply a function by -1, what is the effect on its graph?

Dafna1 [17]

9514 1404 393

Answer:

B. The graph flips over the x-axis

Step-by-step explanation:

When you plot the coordinate pair (x, y), you plot the point 'y' units above the x-axis. If you change the sign of that (multiply the function by -1), then the point becomes (x, -y), and is plotted 'y' units below the x-axis.

The graph flips over the x-axis.

Attached is an example of a function with its original graph (red) and the graph after being multiplied by -1 (blue). The blue graph is a reflection of the red graph across the x-axis.

5 0

2 years ago