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2 years ago

Help i timed The bill for a pizza was $13.50. Charles paid for 4/5 the entire bill

Mathematics

1 answer:

Afina-wow [57]2 years ago

3 0

Answer:

12.7

Step-by-step explanation:

you have to turn 4/5 into a decimal then subtract that from 13.50

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Solve the system by graphing: y=-3x-3 and y=2x+2. Make sure you write your answer as an ordered pair: (x,y)

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Answer: (5, 12)

Step-by-step explanation:

Just graph the linear equations and find where they intersect.

Algebraically, you can set them equal to each other

-3x-3=2x+2

-x-3=2

-x=5

x=5

Plug x=5 to any equation

y=2(5)+2

y=12

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In perfectly symmetrical distributions, which of the following is NOT a correct statement? Group of answer choices The distance

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3 years ago

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A recipe for oatmeal cookies makes 24 cookies. The recipe calls for 2 1/2 cups of flour. Penny wants to make 3/4 of the recipe.

barxatty [35]

Answer:

Penny needs $1\frac{7}{8}$ cups of flour to make 3/4 of the recipe.

The recipe will make 18 cookies.

Step-by-step explanation:

We have been given that a recipe for oatmeal cookies makes 24 cookies. Penny wants to make 3/4 of the recipe.

To find the number of cookies that will 3/4 of the recipe will make, we need to find 3/4 of 24 as shown below:

$\frac{3}{4}\text{ of recipe}=24\times \frac{3}{4}$

$\frac{3}{4}\text{ of recipe}=6\times \frac{3}{1}$

$\frac{3}{4}\text{ of recipe}=18$

Therefore, the recipe will make 18 cookies.

We are also told that recipe calls for 2 1/2 cups of flour. To find amount of flour needed for 3/4 of the recipe, we will multiply 2 1/2 cups by 3/4 as:

$\text{Cups of flour needed to make 3/4 of recipe}=2\frac{1}{2}\times \frac{3}{4}$

$\text{Cups of flour needed to make 3/4 of recipe}=\frac{5}{2}\times \frac{3}{4}$

$\text{Cups of flour needed to make 3/4 of recipe}=\frac{5\times 3}{2\times 4}$

$\text{Cups of flour needed to make 3/4 of recipe}=\frac{15}{8}$

$\text{Cups of flour needed to make 3/4 of recipe}=1\frac{7}{8}$

Therefore, Penny needs $1\frac{7}{8}$ cups of flour to make 3/4 of the recipe.

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3 years ago

Jason solved the following equation to find the value for x. –8.5x – 3.5x = –78 x = 6.5 Describe how Jason can check his answer.

sweet-ann [11.9K]

Answer: Jason can substitute $x=6.5$ into the equation. The left side of the equation must be equal to the right side of the equation.

Step-by-step explanation:

The equation $-8.5x-3.5x=-78$ must be solved by calculating the value of the variable x:

Add like terms:

$-12x=-78$

Divide both sides by -12:

$\frac{-12x}{-12}=\frac{-78}{-12}\\\\x=6.5$

Once Jason solves for x, he has to substitute $x=6.5$ into the equation and simplify to check his answers.

If his answer is right, the left side of the equation will be equal to the right side of the equation.

Then:

$-12(6.5)=-78\\-78=-78$

$x=6.5$ is a solution of the equation.

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3 years ago

Read 2 more answers