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3 years ago

Y = –x + 4 x + 2y = –8 How many solutions does this linear system have?

Mathematics

1 answer:

kvasek [131]3 years ago

4 0

X + 2y = -8
-x - y = -4

y = -12

x = -8 - 2 (-12) = -8 + 24 = 16

It has a one solution

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What substitution should be used to rewrite 4x12 – 5x6 – 14 = 0 as a quadratic equation? u = x2 u = x3 u = x6 u = x12

Arada [10]

Sent a picture of the solution to the problem (s).

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3 years ago

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Cadie is going to toss three coins simultaneously. What is the probability that exactly two of the coins will land on heads?

Contact [7]

For each coin, there are 2 outcomes, heads (H) or tails (T), so for the 3 coins, the number of outcomes are:

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3 years ago

A cyclist rides his bike at a speed of 18 miles per hour. What is this speed in feet per second? How many feet will the cyclist

Kisachek [45]

Answer:

The distance travel by cyclist in 20 seconds is 528 feet .

Step-by-step explanation:

Given as :

The speed of cyclist riding bike = s = 18 miles per hour

Let The distance cover by cyclist in 20 seconds = d feet per sec

Now, According to question

∵ 1 miles = 5280 feet

∴ 18 miles = 5280 × 18 = 95,040 feet

So, The speed of cyclist in feet per hour = 95,040 feet per hour

Again,

∵ 1 hours = 3600 seconds

So, The speed of cyclist in feet per sec = $\dfrac{95040}{3600}$ ft/sec

∴ The speed of cyclist in feet per sec = 26.4 feet per second

Again

∵ In 1 sec the distance cover by cyclist = 26.4 feet

∴ In 20 sec the distance cover by cyclist = 26.4 × 20 feet

i.e In 20 sec the distance cover by cyclist = 528 feet

Hence, The distance travel by cyclist in 20 seconds is 528 feet . Answer

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3 years ago

Each day a small business owner sells 200 pizza slices at $3.00 per slice and 85 sandwiches at $2.50 each. Business expenses com

klio [65]

How much are the owner's expenses for 10 days?

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How much money does the owner make selling pizzas per day?

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85 * 2 = $170

In one day, the owner sells 600 + 170 = $770 worth of pizza and sandwiches

Over the course of ten days, that is 10 * 770 = $7700

Profit = revenue - cost = 7700 - 1300 = $6400

There ya go

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3 years ago

What makes two angles exterior versus interior ?

astraxan [27]

Answer:

Any angle that is on the inside of a shape is called an interior angle.

Step-by-step explanation:

Any angle that is on the outside of a shape is called an exterior angle. An exterior angle is made by extending one of the lines of the shape beyond the intersection point. ... Notice that the two angles make a straight line.

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2 years ago