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3 years ago

Jen goes to a carnival with $25.00 to spend.

Mathematics

1 answer:

Tanya [424]3 years ago

3 0

Answer:

She needs $11.25 for only 5 rides

She need $26,75 total to go for 5 rides including all other expenses.

Step-by-step explanation:

Total Amount she have = $25

Let

Cost of each rides = x

According to given condition

Cost of 8 rides = Total amount she have - admission cost

8x = $25 - $7

8x = $18

x = $18 / 8

x = $2.25

So, each ride cost $2.25

Cost of 5 rides = 5 x

Cost of 5 rides = 5 x $2.25

Cost of 5 rides = $11.25

Total amount she needed = Cost of 5 rides + admission fee + carnival games cost + Snacks cost = $11.25 + $7 + (2 x $3 ) + $2.5 = $26.75

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professor190 [17]

Answer:

The answer is VX.

Step-by-step explanation:

This is because the line segment VX, reaches from one end of the circle to the other, touch both sides of the circle. The other options do not make sense since segment XY does not go through the center of the circle and TX is the radius of the circle. The radius is half the diameter of the circle.

Therefore, the answer is VX.

5 0

3 years ago

1. A new brand of hot dog claims to have a lower sodium content than the leading brand.

kherson [118]

Answer:

(a) Population mean = 314.5mg

(b) Margin of error = 21.281mg

The new brand of hot dog has a lower sodium content on average than the leading brand

(d) Yes

Step-by-step explanation:

(a) Population mean = (370+326+322+297+326+289+293+264+327+331)/10 = 3145/10 = 314.5mg

(b) Margin of error = t×sd/√n

sd = 29.73, n = 10, degree of freedom = n-1 = 10-1 = 9

Assuming 95% confidence level

t-value corresponding to 9 degrees of freedom and 95% confidence level is 2.262

Margin of error = 2.262×29.73/√10 = 21.281mg

Lower limit of new brand = 314.5 - 21.281 = 293.219mg

Upper limit = 314.5 + 21.281 = 335.781mg

The range of sodium content for the new brand of hot dog is between 293.219mg and 335.781mg which is lower than the leading brand (350mg)

(d) Margin of error = t×sd/√n

From the formula above, margin of error varies inversely as the square root of sample size

The smaller the sample size (n = 10) the larger the margin of error and the less accurate is the population mean

The larger the sample size (n = 40) the smaller the margin of error and the more accurate is the population mean

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4 years ago

The product of nine, y and x not simplified.

Ronch [10]

Answer:

9yx

Step-by-step explanation:

product means multiply.

nine, y and x

9yx

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3 years ago

16) Please help with question. WILL MARK BRAINLIEST + 10 POINTS.

Katyanochek1 [597]

We will use the sine and cosine of the sum of two angles, the sine and consine of $\frac{\pi}{2}$ , and the relation of the tangent with the sine and cosine:

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\cos(\alpha+\beta)=\cos\alpha\cdot\cos\beta-\sin\alpha\cdot\sin\beta$

$\sin\dfrac{\pi}{2}=1,\ \cos\dfrac{\pi}{2}=0$

$\tan\alpha = \dfrac{\sin\alpha}{\cos\alpha}$

If you use those identities, for $\alpha=x,\ \beta=\dfrac{\pi}{2}$ , you get:

$\sin\left(x+\dfrac{\pi}{2}\right) = \sin x\cdot\cos\dfrac{\pi}{2} + \cos x\cdot\sin\dfrac{\pi}{2} = \sin x\cdot0 + \cos x \cdot 1 = \cos x$

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Hence:

$\tan \left(x+\dfrac{\pi}{2}\right) = \dfrac{\sin\left(x+\dfrac{\pi}{2}\right)}{\cos\left(x+\dfrac{\pi}{2}\right)} = \dfrac{\cos x}{-\sin x} = -\cot x$

3 0

4 years ago

It is 5 degrees outside and the temperature will drop 4 degrees each hour for the next 3 hours. What will the temperature be in

Softa [21]

Answer:

-7 degrees

Step-by-step explanation:

The temperature is predicted to be ...

5 +3(-4) = 5 -12 = -7 . . . . degrees

To find the change, multiply the rate of change by the time period. To find the new temperature, add the change to the starting temperature.

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3 years ago