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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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3 years ago

Sinx = 1/2, cosy = sqrt2/2, and angle x and angle y are both in the first quadrant.

Leviafan [203]

Answer:

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Step-by-step explanation:

we know that

$tan(x+y)=\frac{tan(x)+tan(y)}{1-tan(x)tan(y)}$

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step 1

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we have

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we know that

$sin^{2}(x)+cos^{2}(x)=1$

substitute

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step 2

Find tan(x)

$tan(x)=sin(x)/cos(x)$

substitute

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step 3

Find sin(y)

we have

$cos(y)=\frac{\sqrt{2}}{2}$

we know that

$sin^{2}(y)+cos^{2}(y)=1$

substitute

$sin^{2}(y)+(\frac{\sqrt{2}}{2})^{2}=1$

$sin^{2}(y)=1-\frac{2}{4}$

$sin^{2}(y)=\frac{2}{4}$

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step 4

Find tan(y)

$tan(y)=sin(y)/cos(y)$

substitute

$tan(y)=1$

step 5

Find tan(x+y)

$tan(x+y)=\frac{tan(x)+tan(y)}{1-tan(x)tan(y)}$

substitute

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3 years ago