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3 years ago

I need help —30 POINTS—— 22.) Please!

Mathematics

1 answer:

GrogVix [38]3 years ago

8 0

Answer:

a. there are sometimes infinitely many solutions to the system

b. will always have one solution

c. There is never any solution for the system

Step-by-step explanation:

22a If two lines have the same slope, they can either be parallel lines which never intersect and have no solution or the same line which have infinite solutions. So there are sometimes infinitely many solutions to the system depending on if they are the same line or are parallel lines

b If the lines have different slopes, they will eventually intersect each other at a point, so they will always have one solution

c. If the lines have the same slope and a different y intercept, they are parallel lines and will never intersect. There are no solutions when they never intersect. There is never any solution for the system

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There are 12 people in cafe. half of them are drinking coffee. How many people are drinking coffee?

enot [183]

The answer is 6 people.

Half of the 12 people in the cafe would be 6 people. You can find half of a number by dividing it by two, or multiplying it by .5

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3 years ago

Ella purchased a game that was on sale for 12% off. The sales tax in her county is 6%. Let y represent the original price of the

klio [65]

Answer:

The expression that can be used to determine the final cost of the game is

1.06(0.88 y) ⇒ (C)

Step-by-step explanation:

If the price of an item is discounted, that mean its new price will be less its initial price

The taxes on item, makes its new price greater than the initial price because tax is add

Let us solve the problem

∵ Ella purchased a game that was on sale for 12% off

→ That means the new price will (100% - 12%) of the initial price

∵ y represented the initial price of the game

→ Multiply y by (100% - 12%) to get the new price

∴ The new price = y (100% - 12%)

∴ The new price = y (88%)

→ Change 88% to normal number by divide it by 100

∴ The new price = y ( $\frac{88}{100}$ )

∴ The new price = 0.88 y

∵ The sales tax in her county is 6%

→ That means the final cost will be (100% + 6%) of 0.88 y

∴ The final cost = (100% + 6%) × (0.88 y)

∴ The final cost = 106% × (0.88 y)

→ Change 106% to normal number by divide it by 100

∴ The final cost = $\frac{106}{100}$ × (0.88 y)

∴ The final cost = 1.06(0.88 y)

The expression that can be used to determine the final cost of the game is 1.06(0.88 y)

4 0

3 years ago

A bag contains only cherry and grape gumballs. The ratio of cherry gumballs to grape gumballs in the bag is 7:6. What is the rat

Ede4ka [16]

So,

There are 7 cherry gumballs and 6 grape gumballs.

The total gumballs is 13.

Therefore, the ratio of grape gumballs to total gumballs is 6:13.

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3 years ago

Write a 0.26 in word form

Alex73 [517]

<span>twenty six</span> <span>hundredths would be the word form of 0.26 :)

</span>

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3 years ago

Read 2 more answers

This is confusing someone help please

Marat540 [252]

Answer:

Below in BOLD.

Step-by-step explanation:

5x^2 - 6x - 2 = 0

Quadratic formula for ax^2 + bx + c = 0 is

x = [-b ± √(b^2 - 4ac)]/ 2a

Here we have a = 5, b = -6 and c = -2

so x = [-(-6) ± √((-6)^2 - 4*5*-2)]/ 2*5

= [ 6 ± √(36 + 40)] / 10

= 0.6 ± √76 / 10

= 0.6 ± 0.8718

= 1.4718, -0.2718

= 1.5, -0.3 to one decimal place.

x^2 + 3x = 40

x^2 + 3x - 40 = 0

We can factor this one:

(x - 5)(x + 8) = 0

x - 5 = 0 giving x = 5 and

x + 8 = 0 giving x = -8.

Answer x = -8, 5.

4 0

2 years ago