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3 years ago

Help me please!!!i rlly need it!

Mathematics

2 answers:

OlgaM077 [116]3 years ago

5 0

Answer:

7.5

Step-by-step explanation:

How long does it take a car to travel 1 mile if its average speed is 40 mph? The answer is 1/40 of an hour or 1.5 minutes. multiply this by 5

juin [17]3 years ago

5 0

Answer:

0.1 hours to the nearest tenth (0.125 hours exact)

Step-by-step explanation:

For this problem, we simply need to do a conversion to find the length of time.

We are given the rate 40 miles per hour, and the distance of 5 miles. We simply need to know the amount of time.

5 miles * (1 hour per 40 miles) = 1 hour / 8

Note, the distance unit cancels out.

So, to travel 5 miles it will take 1/8 of an hour.

1/8 as a decimal is equal to 0.125. The answer rounded to the nearest tenth would be 0.1 hours, since the 2 rounds down.

Cheers.

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An item is priced at $13.42. If the sales tax is 4%, what does the item cost including sales tax? If necessary, round to the nea

stiv31 [10]

Answer:

Total cost = $13.96

Step-by-step explanation:

The total to be paid for the item is the addition of its price plus the taxes. That is:

$Total\,\,cost=13.42+0.04\,*\,13.42\\Total\,\,cost=13.42+0.5368\\Total\,\,cost==13.9568$

Which can be rounded to $13.96

8 0

3 years ago

How do you solve 1/4 (8y + 4) -17= 1/2 (4y -8)

Keith_Richards [23]

Well use photo math that will give u the answer and how to work it out

3 0

3 years ago

Two vertical poles of lengths 11 ft and 14 ft stand 16 ft apart. A cable reaches from the top of one pole to some point on the g

Alex17521 [72]

We are given

total length of cable is 30 feet

and this cable is on hypotenuse sides of the triangles

so, we can draw triangle as

Let's assume those hypotenuse as 'a' and 'b'

so, we will have

$a+b=30$

now, we can find 'a' and 'b' from triangle

Smaller triangle:

$a=\sqrt{x^2+11^2}$

Larger triangle:

$b=\sqrt{(16-x)^2+14^2}$

we know that

$a+b=30$

so, we can plug this value

and we get

$\sqrt{x^2+11^2}+\sqrt{(16-x)^2+14^2} =30$

now, we can solve for x

$\left(\sqrt{x^2+11^2}\right)^2=\left(30-\sqrt{\left(16-x\right)^2+14^2}\right)^2$

$32x-1231=-60\sqrt{x^2-32x+452}$

$1024x^2-78784x+1515361=3600x^2-115200x+1627200$

now, we can use quadratic formula

we get

$x=\frac{-\sqrt{36416^2-1152389056}+36416}{5152},\:x=\frac{\sqrt{36416^2-1152389056}+36416}{5152}$

$x=4.510,x=9.627$

so,

The point should be located 4.510 feet , 9.627 feet from the smaller pole to use 30 feet cable............Answer

6 0

3 years ago

Is 90ft bigger than 32 yards

JulsSmile [24]

No, 90 feet is NOT bigger than 32 yards.

An easy way to solve this is to convert feet to yards, or vice versa.

1 yard = 3 feet

32 × 3 = 96 feet

Now, put that into the problem and try and solve it.
Is 90 feet bigger than 96 feet? The answer is NO because 90 < 96.

6 0

3 years ago

Read 2 more answers

How do I work this out?

zvonat [6]

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