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3 years ago

SCIENCE - Look at the diagram shown below:

Mathematics

1 answer:

frutty [35]3 years ago

5 0

Answer:

b, lol I'm sure it's b. Goodluck I hope I'm right

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Every polynomial function of degree 3 with real coefficients has exactly three real zeros. choose the correct answer below. fals

Vikki [24]

False. It can also have complex number zeroes.

8 0

3 years ago

Read 2 more answers

At the metal-casting company where you work, you must set up a conveyor system to move castings from the furnace to the heat tre

Mazyrski [523]

Answer:

2.35 yards/second or 7.07 ft/second

Step-by-step explanation:

The distance to be covered is 55 yards.

The casting cools at the rate of $0.3^\circ \text F$ and the temperature must not be allowed to cool more than $7^\circ \text F$ .

We know that, $\text {distance} = \frac{\text {speed}}{\text {time}}$

By the time, the temperature reaches $7^\circ \text F$ , it will take about,

$\frac{7}{0.3}=23.33\text s$ , so it will take about 23.33 seconds.

Also, 55 yards = $55 \times 3 =165 ft$

So the minimum speed that conveyor must move is,

$\frac{165}{23.33}=7.07 ft/s$

Hence, the speed of conveyor is 7.07 feet per second.

5 0

3 years ago

Read 2 more answers

The radius of a car wheel is 14 inches. how many revolutions per minute is the wheel making when the car is traveling at 60 mph.

Dovator [93]

Answer:

$721\ \frac{rev}{min}$

Step-by-step explanation:

step 1

Find the circumference of the wheel

The circumference of a circle is equal to

$C=2\pi r$

we have

$r=14\ in$

substitute

$C=2\pi(14)$

$C=28\pi\ in$

assume

$\pi=3.14$

$C=28(3.14)=87.92\ in$

step 2

$1\ mile=63,360\ inches$

$1\ hour=60\ minutes$

we have that

The speed of the car is 60 miles/hour

Convert the speed to inches/minute

$60\ \frac{mi}{h}=60(\frac{63,360}{60})=63,360\ \frac{in}{min}$

step 3

Remember that

The circumference of the wheel subtends one revolution

$1\ rev=87.92\ in$

Convert the speed to rev/min

$63,360\ \frac{in}{min}=\frac{63,360}{87.92}=721\ \frac{rev}{min}$

3 0

3 years ago

Someone plz help fast will give brainiest

Georgia [21]

Answer:

Step-by-step explanation:

The bill was $15 extra this month so 15 divided by 3 is 5.

4 0

4 years ago

43 x 10^1=<br> What’s the answer for this ?

KengaRu [80]

Answer:

430

Step-by-step explanation:

$43 x 10^{1}$

43 x 10 = 430

10 to the first power is equal to ten.

8 0

3 years ago