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3 years ago

Oceanside Bike Rental Shop charges a sixteen dollar fixed fee plus seven dollars an

Mathematics

1 answer:

Romashka-Z-Leto [24]3 years ago

8 0

Answer:

8 hours

Step-by-step explanation:

72-16=56

56÷7=8 hours

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HELP PLS!!!!! Giving brainliest

ValentinkaMS [17]

Answer:

question 5

Step-by-step explanation:

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3 years ago

Find the missing angle measure

TiliK225 [7]

Answer:

1) $122$ °

2) $151$ °

Step-by-step explanation:

As these two angles are supplementary (They add together to equal 180°) we can setup the equation and solve for x.

$58+x=180\\\\x=180-58\\\\x=122$

Again, these two angles are supplementary we can setup the equation and solve for x

$29+x=180\\\\x=180-29\\\\x=151$

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4 years ago

2p<6 i need help plsss i need it before 9:30

dangina [55]

Answer:

this is hard

Step-by-step explanation:

so just try

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3 years ago

How do you find the minimum value of a quadratic function?

aniked [119]

The minimum value of a function is the place where the graph has a vertex at its lowest point.

There are two methods for determining the minimum value of a quadratic equation. Each of them can be useful in determining the minimum.

(1) By plotting graph

We can find the minimum value visually by graphing the equation and finding the minimum point on the graph. The y-value of the vertex of the graph will be the minimum.

(2) By solving equation

The second way to find the minimum value comes when we have the equation y = ax² + bx + c.

If our equation is in the form y = ax^2 + bx + c, you can find the minimum by using the equation min = c - b²/4a.

The first step is to determine whether your equation gives a maximum or minimum. This can be done by looking at the x² term.

If this term is positive, the vertex point will be a minimum; if it is negative, the vertex will be a maximum.

After determining that we actually will have a minimum point, use the equation to find it.

6 0

3 years ago

A Gallup survey of 2322 adults (at least 18 years old) in the U.S. found that 408 of them have donated blood in the past two yea

Flura [38]

Answer: $(0.163,\ 0.189)$

Step-by-step explanation:

The confidence interval for population proportion(p) is given by :-

$\hat{p}\pm z^*\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

, where $\hat{p}$ = Sample proportion.

n= Sample size.

z* = Critical value.

Let p = Proportion of adults in the U.S. who have donated blood in the past two years.

As per given , we have

n= 2322

Sample proportion of adults in the U.S. who have donated blood in the past two years. : $\hat{p}=\dfrac{408}{2322}\approx0.1757$

By z-table , the critical value for 90% confidence : z*= 1.645

Then, the 90% confidence interval for the population proportion of adults in the U.S. who have donated blood in the past two years will be

$0.1757\pm ( 1.645)\sqrt{\dfrac{0.1757(1-0.1757)}{2322}}$

$0.1757\pm ( 1.645)\sqrt{0.0000623727433247}$

$0.1757\pm ( 1.645)(0.00789764163056)$

$0.1757\pm 0.013$

$=(0.1757- 0.013,\ 0.1757+ 0.013)$

$=(0.1627,\ 0.1887)\approx(0.163,\ 0.189)$

Hence, the 90% confidence interval for the population proportion of adults in the U.S. who have donated blood in the past two years. = $(0.163,\ 0.189)$

5 0

3 years ago