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3 years ago

Please help me! I don't understand how to do these type of questions and I need to do 4 of them!

Mathematics

2 answers:

Simora [160]3 years ago

4 0

Answer:

$0.25

Step-by-step explanation:

Ok. You have to set up a system of equations that describe the situation and solve these equations. You are given some informations.

1. The price of a Petunia. Let' s give that a label and call it P.

2. The money left after the purchase. Let's call that number M.

3. The amount of money Ying Ying has in her wallet. Let's call that X.

Now you can form an equation: X = nP + M

Meaning: The money Ying Ying has in her wallet is equal to the value of n Petunias and $M left in her wallet. n and M are given in the table.

If Ying Ying buys 2 Petunias, she has $2 left in her wallet. If I have to describe this in an equation, I would write:

X = 2P + 6.5

All equations would look like this:

X = 2P + 6.5

X = 8P + 5

X = 14P + 3.5

Now you have 3 equations with only 2 unknowns, which can be solved for X and P.

X = 7 and P = 0.25

k0ka [10]3 years ago

3 0

Answer:

each petunia is 25 cents

Step-by-step explanation:

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The perimeter of a right triangle is 60 feet and the area is 150 square feet. If the lengths of the sides of the triangle are ea

JulsSmile [24]

Answer:

B. 600 ft

Step-by-step explanation:

The formula for the Perimeter of a right triangle = Side a + Side b + Side c

The perimeter of a right triangle is 60 feet

If the lengths of the sides of the triangle are each multiplied by 10, what is the perimeter of the new right triangle?

Hence, the perimeter of the new right triangle = 10 × 60ft

= 600ft

Option B is the correct Option.

4 0

3 years ago

Read 2 more answers

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Alex73 [517]

Answer:

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3 years ago

Which statement is always true?

Goshia [24]

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2 years ago

A pile of 42 coins worth $4.90, consisting of nickels and quarters. How many nickels are there?

Ymorist [56]

Answer:14

Step-by-step explanation:

A nickel is 5 cents (20% of dollar)

and a quarter is 25 cents (25% of dollar)

We have given a pile of 42 coins worth of $4.90

Let x be the no nickels and

y be the no of quarter

therefore

x+y=42 -----1

$\frac{x}{4}$ + $\frac{y}{20}$ =4.90 ---2

Solving $\left ( 1\right )&\left ( 2\right )$ we get

x=14 & y=28

Therefore no of nickels is 14 & no of quarters is 28

6 0

3 years ago

A store sells boxes of juice in equal size package Garth bought 18 boxes Rico Ball 36 boxes in my 45 boxes what is the greatest

monitta

I'm not sure I'm understanding the wording of the question, but if it's this:

Juice boxes come in a package with multiple juice boxes in each package. Three people bought 18, 36, and 45 juice boxes. What is the largest possible number of juice boxes per package?

Then the problem is just an involved way of asking what the greatest common factor of 18, 36, and 45 is, and the answer is 9, the difference between 36 and 45, which are both multiples of 9. Note that 18 is also a multiple of 9. One way to find the greatest common factor of three numbers is to factor all of them and find which prime factors they have in common.

7 0

3 years ago