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sesenic [268]
3 years ago
5

An airplane can cruise at 640 mph. how far can it fly in 2 1/4 hours?

Mathematics
1 answer:
bija089 [108]3 years ago
3 0

Answer: the plane can go 1440 miles if it is constantly going at cruise speed

Step-by-step explanation:

640 x 2 = 1280

640 x .25 = 160

1280 + 160 = 1440

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Vasko was renting a high performance bicycle for his Olympic training. Bicycle A is $25 per month and requires a down payment of
baherus [9]

he would need to rent it for a year or 12 months


6 0
3 years ago
Fidn the points of intersection
Sedbober [7]

EQ. 1: x + y = 8

EQ. 2: 4x-y = 7

Rewrite EQ. 1 as EQ. 3: x = 8-y

Replace x in EQ.2 with EQ. 3:

4(8-y) - y = 7

Use the distributive property:

32 - 4y - y = 7

Combine like terms:

32 - 5y = 7

Subtract 32 from each side:

-5y = -25

Divide both sides by -5

y = -25 / -5

y = 5


Now replace y with 5 in EQ. 3 to solve for X:


x = 8-5

x = 3


The point of intersection is X = 3, Y = 5, which is written as (3,5)

8 0
3 years ago
Which of the following best describes the relationship between (x + 1) and the polynomial x2 - x - 2?
Viefleur [7K]

Answer:

C

Step-by-step explanation:

to factor x² - x - 2

consider the factors of the constant term which sum to give the coefficient of the x-term.

the factors are - 2 and + 1 since - 2 × 1 = - 2 and - 2 + 1 = - 1

x² - x - 2 = (x - 2)(x + 1), hence (x + 1) is a factor


3 0
3 years ago
Read 2 more answers
Solve the system of equations algebraically. Show all of your steps
Katyanochek1 [597]
I am going to explain this using the substitution method, considering it appears to be the best in this situation.

We know (from the bottom equation) that y can equal 3x+20. Using this knowledge, we substitute the y in the top equation for 3x+20. Now, we have an equation that looks like this:

3x+20=x^2+2x

Now we need to move x to one side and then do some radicals (square roots).
Subtract the 2x on the right (since it is smaller, negatives = NONONO), which will give you

x+20=x^2

Now, we take the square root of both sides to get

rad(x+20)=x

Now we have to simplify. 20 doesn't have a square root, but 4 goes into 20, and 4 has a square root of 2. This now becomes

2rad(x+5)

This doesn't simplify any further... we have a problem... no way to isolate x as far as my knowledge goes... Sorry, can't help you any further than that, but another person or your teacher might be able to. R.I.P...
4 0
3 years ago
What the answer 40 points plz and brainliest
pantera1 [17]

Answer:

Widget per hours for A: 5

Widgets per hour for B: 8

Widgets per hour for C: 6

Widget B is the fastest

Step-by-step explanation:

A: 30 /6 = 5

B: 64/8 = 8

C: 18/3 = 6

4 0
3 years ago
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