RiDdLE oF ThE DaY: PaRt 2- Mr.White had been missing and the only evidence he left behind was a paper that said "The first of July, the fourth of January, the first of December and the eighth of February" the police questioned the people that were in the house at that time. Judy said she was at her parents house, Logan was Mr.Whites secretary said he was working on a report for his boss and haven't left his room and Rose, Mr. Whites daughter said she was having guest and never left the living room. Can you crack the case?

Answer:

The cost of a can of popcorn is $10.

The cost of a box of cookies is $5.

The cost of a can of popcorn is $20

Step-by-step explanation:

First you must propose a system of equations, a set of two or more equations with several unknowns in which you want to find the value of each unknown so that all the equations of the system are fulfilled.

Defining the variables:

Amy sold 2 pounds of candy, 3 boxes of cookies and 1 can of popcorn for a total sale of $65. Then:

2*x + 3*y + 1*z=65 Equation 1

Brian sold 4 pounds of candy, 6 boxes of cookies and 3 cans of popcorn for a total sale of $140. So:

4*x + 6*y + 3*z=140 Equation 2

Paulina sold 8 pounds of candy, 8 boxes of cookies and 5 cans of popcorn for a total sales of $250. Then:

8*x + 8*y + 5*z=250 Equation 3

Then the system of equations is formed by these three equations.

A method to solve a system of equations is by means of the substitution method, which consists of isolating one of the two unknowns in an equation to substitute it in the other equation.

Isolating z from Equation 1:

[tex]z=65-2*x-3*y[/tex] Equation 4

Replacing in Equation 2:

4*x + 6*y + 3*(65 -2*x-3*y)=140

4*x + 6*y + 195 - 6*x  - 9*y= 140

-2*x - 3*y=140-195

-2*x - 3*y=-55

2*x + 3*y= 55

and isolating x:

[tex]x=\frac{55-3*y}{2}[/tex] Equation 5

Replacing in Equation 4:

[tex]z=65-2*\frac{55-3*y}{2} -3*y[/tex]

z=65 - (55-3*y) - 3*y

z= 65 -55 + 3*y - 3*y

z= 10

So the cost of a can of popcorn is $10.

Replacing equation 5 and the value of z in equation 3:

8*[tex]\frac{55-3*y}{2}[/tex] + 8*y + 5*10=250

[tex]\frac{8}{2}[/tex]*(55 -3*y)+ 8*y + 5*10=250

4*(55 -3*y)+ 8*y + 5*10=250

4*55 - 4*3*y + 8*y + 50=250

220 - 12*y + 8*y + 50=250

-12*y + 8*y= 250 -220 - 50

-4*y= -20

[tex]y=\frac{-20}{-4}[/tex]

y= 5

So the cost of a box of cookies is $5.

Finally replacing the value of y in Equation 5 you get the value of x:

[tex]x=\frac{55-3*5}{2}[/tex]

[tex]x=\frac{55-15}{2}[/tex]

[tex]x=\frac{40}{2}[/tex]

x=20

Finally, the cost of a can of popcorn is $20

Answer:  B. 202.5 miles

Step-by-step explanation:

Multiply the scale ratio by the number of inches given on the map.

2.7 × 1 inch  and  2.7 × 75 miles    2.7×75=202.5

2.7 inches represents 202.5 miles

Answer:

I think the answer is A. since the exponents inside the equation are negative, and the outside exponents are positive

Step-by-step explanation:

Answer:

<3

Step-by-step explanation:

Answer:

A and D

Step-by-step explanation:

If you simplify for A it is 8x +8

If you simplify for D it is 8x+8

Answer:

A & D

Step-by-step explanation:

Simplify all of them and then see which one has the same answer and those two are the answers

Answer: -6 You answered your own question-

Answer:

root 1

Step-by-step explanation:

The value of root 1 to any power is equal to 1.

Answer:

Step-by-step explanation:

10/10 = 1

Hope this helps! <3

y-6 =4 (1-4)

y-6=-12

y=-6

Answer:y= -6

Answer:

Step-by-step explanation:

2nd one, 3rd one, and 5th one

Answer:

28

Step-by-step explanation:

132 feet²

For this question, you have to find area.

Area is length x width

so multiply 11 x 12

You will get 132 feet²

Answer:

y=7x-5

Step-by-step explanation:

y=mx+b

2=(7)(1)+b

2=7+b

2-7=b

-5=b

Answer:

20, -7, -14, 10, -5, 8

20 + 10 + 8 + (-5) + (-7) + (-14) - organize all values (makes it easier to add)

38 + (-26) - add like terms

12

12/6 -divide sum by number of values

2 - answer

hopes this helps

Step-by-step explanation:

Answer:

x =  1/ 10 y +  −3 /10

Step-by-step explanation:

Let's solve for x.

y = 10x + 3

Step 1: Flip the equation.

10x + 3 = y

Step 2: Add -3 to both sides.

10x + 3 + −3 = y + −3

10x = y −3

Step 3: Divide both sides by 10.

10/10x  =  y −3/ 10

x =  1 /10 y +  −3 /10

Therefore the answer is

x =  1/ 10 y +  −3 /10

Please Mark Brainliest

Hope This Helps!

Answer:

3/4

Step-by-step explanation:

Can Yu Mark Brainliest Plz

6x+9-4x-6

2x+3

assuming you simplify, hope this helps!

Answer:

D

Step-by-step explanation:

Answer:

Your blood carries oxygen and nutrients to all of the cells in your body. Blood cells also fight infection and control bleeding. Most blood cells are made in your bone marrow. They are constantly being made and replaced.

Step-by-step explanation:

Hope this helps!

Brainliest please.

Answer: It carries oxygen. Red blood cells also remove carbon dioxide from your body, transporting it to the lungs for you to exhale. Red blood cells are made in the bone marrow. They typically live for about 120 days, and then they die.

Answer:

ASA

Step-by-step explanation:

Answer:

Try reloading, or turning off ur phone. it worked for me...

Step-by-step explanation:

Answer:

mine aren't either and I  also really need answers pls help

Step-by-step explanation:

Answer:

Distance from Mason's house to Chloe's house is 160 as great as the distance from Mason's to Kevin's house.

Step-by-step explanation:

Let the distance from Mason's house to Chloe's house is x times as great as the distance from Mason's to Kevin's house.

Distance from Mason's house to Kevin's house= [tex]5 \times 10^5[/tex] inches.

Distance from Mason's house to Chloe's house =[tex]8 \times 10^7[/tex] inches

ATQ

[tex]8 \times 10^7= x \times 5 \times 10^5 \\\frac{8 \times 10^7}{5 \times 10^5}=x\\160=x[/tex]

So, distance from Mason's house to Chloe's house is 160 times as great as the distance from Mason's to Kevin's house.

Hence distance from Mason's house to Chloe's house is 160 as great as the distance from Mason's to Kevin's house.

Answer:

slipknot is the answer to all your problems

Step-by-step explanation:

there is no explanation

Answer:

see below

Step-by-step explanation:

Consider the rule y = 5x + 7.

a. How many tiles are in Figure 0?

In figure 0, we let x=0

y = 5*0+7 = 0+7 = 7

b. Which figure has 37 tiles?

This means y = 37

37 = 5x+7

Subtract 7 from each side

37-7 = 5x+7-7

30 = 5x

Divide by 5

30/5 = 5x/5

6 =x

Figure 6 has 37 tiles

c. In the equation y = mx + b, what do the letters m and b represent?

m is the slope or how much it is increasing each time x increases by 1  and b is how much we start with when x =0

Answer: He retrieved 75$ from his account then he put back 170$ so +75 and -170 so in total the answer would be 245$

Answer:  He would have $100 in his bank account from the information provided .

Answer:

55 degrees

Step-by-step explanation:

I hope this helps, all you need to do is subtract 90 from 35 and your answer is S in which 55 degrees.

Answer: 55°

Step-by-step explanation:

complementary means the angles make up an angle of 90°, therefore to find the missing angle you do, 90-35 which equals 55

Answer:sry

Step-by-step explanation:

Answer:

It is between 9 and 10

Step-by-step explanation:

Answer:

helping other guy get brainleyest

Step-by-step explanation:

A y-intercept is the value at which x = 0.

(4,0) is not a y-intercept because x = 4.

(-1, 1) is not a y-intercept because x = -1.

(0,0) is a y-intercept because x = 0.

(0, -7) is a y-intercept because x = 0.

(-2, 2) is not a y-intercept because x = -2.

(0, -0.25 is a y-intercept because x = 0.

Answer:

here's the answer

Step-by-step explanation:

Answer:

0.128

Step-by-step explanation:

Answer: 28 is correct!!

Step-by-step explanation:

Answer:

The answer is x=28.

Step-by-step explanation:

I hope this helps.