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3 years ago

PLEASSSSSEEEEE HELP ME THIS IS DUE PRETTY SOON I REALLY NEED THE FULL EXPLANATION.

Mathematics

2 answers:

Anastaziya [24]3 years ago

4 0

Answer:

a. 14,4 miles per gallon

b. 15 miles per gallon

c. Mr. Walters' car

Step-by-step explanation:

a. Mrs. Walters drove 360 miles on 25 gallons, so she is drives 360 ÷ 25 = 14,4 miles per gallon

b. Mr. Walters drove 480 miles on 32 gallons, so he drives 480 ÷ 32 = 15 miles per gallon

c. 15 > 14.4 therefore, Mr. Walters' car is getting the better mileage per gallon

user100 [1]3 years ago

3 0

Answer:

a-14.4 MPG, B-15 MPG c Mr. Walters

Step-by-step explanation:

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Anna007 [38]

Lets say x equals how many hours Josh spent in the water.

12.99 + 3.75x = the cost

12.99 + 3.75(4.5) = 12.99 + 16.875 = $29.87

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4 years ago

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GalinKa [24]

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~ ShadowXReaper069

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4 years ago

Read 2 more answers

A three inch diameter pulley on an electric motor that runs at 1800

Bezzdna [24]

Answer:

a) 3 inch pulley: 11,309.7 radians/min

6) 6 inch pulley: 5654.7 radians/min

b) 900 RPM (revolutions per minute)

Step-by-step explanation:

Hi!

When a pulley wirh radius R rotantes an angle θ, the arc length travelled by a point on its rim is Rθ. Then the tangential speed V is related to angular speed ω as:

$V=R\omega$

When you connect two pulleys with a belt, if the belt doesn't slip, each point of the belt has the same speed as each point in the rim of both pulleys: Then, both pulleys have the same tangential speed:

$\omega_1 R_1 = \omega_2 R_2\\$

$\omega_2 = \omega_1 \frac{R_1}{R_2} =1800RPM* \frac{3}{6}= 900RPM$

We need to convert RPM to radias per minute. One revolution is 2π radians, then:

$\omega_1 = 1800*2\pi \frac{radians}{min} = 11,309.7\frac{radians}{min}$

$\omega_2 = 5654.7 \frac{radians}{min}$

The saw rotates with the same angular speed as the 6 inch pulley: 900RPM

3 0

4 years ago

Please help and thank you

kap26 [50]

Answer:

D is the answer

Step-by-step explanation:

The explenation is shown on the picture above.

5 0

3 years ago

Plz help will give biranlest

Black_prince [1.1K]

Answer:

$5.40

Step-by-step explanation:

The word percent literally means "for each 100," and we can use this vocab fact to help us answer a question like "what is 1.8 percent of $300?" We have 1.8 for each 100 in 300, and since there are 3 hundreds in 300, that means we're going to be counting 3 1.8s, which gets us 1.8 × 3 = 5.4. Since our unit is dollars this comes out to $5.40.

8 0

3 years ago