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Verizon [17]
2 years ago
11

A railroad crew can lay 5 miles of track each day. They need to lay 140 miles of track. The length, L (in miles), that is left t

o lay after d days is given by the
following function.
L(d) = 140-50
Answer the following

(a) How many days will it take the crew to lay all the track?
I days

(b) How many miles of track does the crew have left to lay after 18 days?
miles

Mathematics
1 answer:
Kazeer [188]2 years ago
8 0

Answer:

a) 28 days

b) 50 miles

Explanation:

a) 5 miles a day

140 miles ? days

140÷5= 28 days

b) 5 miles a day

? miles 18 days

18×5= 90 miles

140 miles - 90 miles = 50 miles

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Given that the measure of ∠x is 110°, and the measure of ∠y is 59°, find the measure of ∠z.
ch4aika [34]
180-110=70
180-(70+59)=180-129=51
Z=51 im p sure
6 0
3 years ago
Suppose you have 12 coins that total 32 cents . Some of the coins are nickels and the rest are pennies . How many of each coin d
mario62 [17]
You will need 6 coins of 5
and 2 coins of 1
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8 0
3 years ago
A bolt has 6 1/2 turns per inch. How many turns would be in 2 1/2 inches of threads?
Reika [66]

There would be 41 1/4 turns in 2 1/2 inches of threads.

Given, number of turns a bolt has = 16 1/2 turns per inch.

per inch bolt turns = 16 1/2 =33/2

how many turns would be there in 2 1/2 inches of threads = ?

Threads Per Inch, or TPI, is a measure of how many threads are found in one inch along a fastener's length. American fasteners are the only ones that employ TPI. Typically, the thread count is higher for smaller fasteners since they have finer threads. Just as the name implies, the Threads Per Inch (TPI) refers to the number of threads that run the length of a screw for one inch. The TPI of a screw can be easily calculated by simply counting the threads and dividing the total length.

so, 5/2 inches bolt turns =33/2 x 5/2

=165/4

hence 41 1/4 turns

Therefore, 2 1/2 inches of threads have 41 1/2 turns.

Learn more about Conversions here:

brainly.com/question/16851332

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4 0
1 year ago
Reduce a ratio 3/4in: 3/16 ft
Dmitrij [34]

Answer:

4in : 1ft

Step-by-step explanation:

We start with:

3/4 in = 3/16 ft

This means that the length of 3/4 inches is the same as the length of 3/16 feet.

To reduce this, we can start by dividing by 3 in both sides of the equation:

(3/4)/3 in = (3/16)/3 ft

1/4 in = 1/16 ft

Now we can multiply both sides by 16:

16/4 in = 16/16ft

4 in = 1ft

now we reduced the ratio to:

4in : 1ft

5 0
3 years ago
Find a polynomial function of degree 4 with − 2 as a zero of multiplicity 3 and 0 as a zero of multiplicity 1.
MArishka [77]
Degree 4 means you'll have x^4 as your leading term. Multiplicity of 3 means you have the same factor 3 times. So if x = -2, then (x + 2) = 0, so (x + 2) is used 3 times. FOIL that out 3 times and you get x^3 + 6x^2 + 12x + 8. Now multiply by (x + 0) to get a 4th degree polynomial of x^4 + 6x^3 + 12x^2 + 8x. There!
3 0
4 years ago
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