2 years ago

Find the value of x.

Mathematics

1 answer:

inn [45]2 years ago

7 0

Answer:

Step-by-step explanation:

yeah, 9...........right???

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A choir with 8 members sings ave Maria in 8mins how long for 20 members to sing

liubo4ka [24]

Answer:20

Step-by-step explanation:

8 members=8mins

1 member=80 mins

20members=2.5mins

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2 years ago

A framer's market sells apples for $0.75 per pound and oranges for $0.89 per pound

kramer

Answer:

160

Step-by-step explanation:

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2 years ago

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Valentin [98]

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3 years ago

A tire company finds that the lifespan for one brand of its tires is normally distributed with a mean of 47,500 miles and a stan

Illusion [34]

Answer:

42580 miles

Step-by-step explanation:

Mean = $\mu = 47500$

$\sigma = 3000$

The manufacturer does not want to replace more than 5% of the tires

$P(X\leq x)=5\%$

$P(\frac{x-\mu}{\sigma}\leq \frac{x-47500}{3000})=0.05$

By using normal table values :

$\frac{x-47500}{3000}=-1.64$

$x=(-1.64 \times 3000)+47500$

$x=42580$

Hence the approximate number of miles for the warranty is 42580 miles

6 0

3 years ago

An A-frame house is 45 feet high and 32 feet wide. Find the measure of the angle that the roof makes with the floor. Round to th

Flura [38]

Answer:

Angle, $\theta=70.4^{\circ}$

Step-by-step explanation:

We have, an A-frame house is 45 feet high and 32 feet wide. It is required to find the measure of the angle that the roof makes with the floor.

The attached figure shows the A frame. Let $\theta$ is the angle that the roof makes with the floor. So,

$\tan\theta=\dfrac{45}{16}\\\\\tan\theta=2.81\\\\\theta=\tan^{-1}(2.81)\\\\\theta=70.4^{\circ}$

So, the angle of 70.4 degrees is the angle that the roof makes with the floor.

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3 years ago