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3 years ago

9

80 miles per hour is how many feet per minute?

1 answer:

IRINA_888 [86]3 years ago

8 0

Keeping in mind that, there are 5280 feet in 1 mile and 60 minutes in 1 hour.

$\bf \cfrac{80~\underline{mile}}{\underline{hr}}\cdot \cfrac{5280~feet}{\underline{mile}}\cdot \cfrac{\underline{hr}}{60~min}\implies \cfrac{80\cdot 5280~feet}{60~min}\implies \cfrac{422400~feet}{60~min}
\\\\\\
7040\frac{feet}{min}$

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The measure of the vertex angle of an isosceles triangle is 92. Find the measure of a base angle

Andrej [43]

Answer:

44°

Step-by-step explanation:

The sum of the angles in a triangle = 180°

In an isosceles triangle the base angles are equal, thus

base angle = $\frac{180-92}{2}$ = $\frac{88}{2}$ = 44°

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3 years ago

The equation y=15x + 500 represents the amount y that Lin earns by working for x hours, plus a performance bonus. What is Lin's

Vedmedyk [2.9K]

$15 an hour. hope this helps

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3 years ago

Read 2 more answers

Need help with asap!!!!!

NNADVOKAT [17]

Answer:

it is right triangle so we have trigonometric ratio: tan(54)=3/x and from that we have x=3/tan(54)

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2 years ago

NEED HELP ASAP!

galina1969 [7]

9514 1404 393

Answer:

lamp: $80
end table: $140

Step-by-step explanation:

If we let x and y represent the costs of a lamp and end table, respectively, the two purchases can be written as ...

3x +2y = 520

2x -y = 20

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These equations can be solved many ways. If we use "elimination", we can add twice the second equation to the first to eliminate y:

(3x +2y) +2(2x -y) = (520) +2(20)

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x = 80 . . . . . . divide by 7

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The cost of a lamp is $80; the cost of an end table is $140.

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2 years ago

Solve 270=3e^2.4K to the nearest hundredth

mojhsa [17]

Given:

The equation is:

$270=3e^{2.4K}$

To find:

The solution for the given equation to the nearest hundredth.

Solution:

We have,

$270=3e^{2.4K}$

Divide both sides by 3.

$\dfrac{270}{3}=e^{2.4K}$

$90=e^{2.4K}$

Taking ln on both sides, we get

$\ln (90)=\ln e^{2.4K}$

$\ln (90)=2.4K$ $[\because \ln e^x=x]$

Divide both sides by 2.4.

$\dfrac{\ln (90)}{2.4}=K$

$\dfrac{4.4998}{2.4}=K$ $[\because \ln (90)\approx 4.4998]$

$1.874916667=K$

Round the value to the nearest hundredth (two decimal place)

$K\approx 1.87$

Therefore, the value of K is 1.87.

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3 years ago