Answers
Answer:
A
Step-by-step explanation:
perpendicular lines have the same slope
Related Questions
Jack and beth are selling wrapping paper for a school fundraiser. Customers can buy rolls of plain wrapping paper and rolls of shiny wrapping paper. Jack sold 5 rolls of plain and 8 rolls of shiny for a total of $190. Beth sold of 5 rolls plain and 3 shiny for a total of $90. Find the cost of each roll of wrapping paper
Answers
Answer:
Cost of a roll of plain wrapping paper = $6
Cost of a roll of shiny wrapping paper = $20
Step-by-step explanation:
Let [tex]x[/tex] denotes cost of a roll of plain wrapping paper and [tex]y[/tex] denotes cost of roll of shiny wrapping paper.
Jack sold 5 rolls of plain and 8 rolls of shiny for a total of $190.
[tex]5x+8y=190\,\,\,(i)[/tex]
Beth sold of 5 rolls plain and 3 shiny for a total of $90.
[tex]5x+3y=90\,\,\,(ii)[/tex]
Subtract (ii) from (i).
[tex]8y-3y=190-90\\5y=100\\y=20[/tex]
Put [tex]y=20[/tex] in (ii)
[tex]5x+3(20)=90\\5x+60=90\\5x=90-60\\5x=30\\x=6[/tex]
Therefore,
Cost of a roll of plain wrapping paper = $6
Cost of a roll of shiny wrapping paper = $20
What is the volume of this figure?
Answers
Answer:
875 ft^3
Step-by-step explanation:
Pick them apart starting at the bottom. The formul used is V=lwh
Starting at the bottom we have we have a sqare of 5 ft = 5ft^3= V = 125 ft^3
Then we have a rectangular prism: 5 x 5 x 20 = V = 500 ft^3
Third we have 5 x 5 x 10 = V = 250 ft3
125+500+250 = 875 ft^3
The equation y+ 3 = 5(x - 3) represents a linear function. What is the y intercept of the equation?
Answers
Answer:
-18
Step-by-step explanation:
If you're looking for the y-intercept for this equation this means that x = 0.
So substitute x as 0 in the equation and you'll get the following.
y + 3 = 5 (0 - 3)
y + 3 = -15
y = -18
4х +7
у+ 1
Зу — 11
12x – 1
Answers
Nancy has 1/3 of a cup of strawberries. She wants to share them with her 4 friends. How much will each of her friends get?
Answers
can anyone solve this?
Answers
can you help me solve the linear equation algebraically y=-x-3. y=-2x-8
Answers
Answer:
I can't it's to hard try studying
x=-5
y=2
Explanation:
Since both of these equations are equal to y, they have to be equal to each other. Set them equal to each other like this: -x-3= -2x-8. Multiply everything by negative 1 to get rid of the negative signs. The equation will look like this: x+3= 2x+8. Than subtract the x from both sides. Than subtract 8 from both sides. That should get you to x=-5. Than plug in -5 into the x value for one of the linear equations. It will get you 2 for the y.
Write an inequality for the graph below.
'न
34
10
।। 12 13 14
Answers
Answer:
i like cheese wbu hahahahahaha
A . expression A
B . expression B
C . expression C
D . expression D
ill mark u brainliest if u answer !
Answers
Answer:
answer choice B.
Step-by-step explanation:
Can someone plz help
Answers
Answer:
it should be 1/4
Step-by-step explanation:
Answer:
1/4 because it depends on how many times you flip it
Mia's dog, Chulo, weighs 13.8 pounds. How many ounces does her dog weigh?
Answers
Answer:
220.8 ounces
Chulo weighs 220.8 ounces
x + y = 5.90
2x + 4y = 16.80
Answers
We move all terms to the left:
2+4y(5.90-y)-(16.80)=0
We add all the numbers together, and all the variables
4y(-1y+5.9)+2-(16.8)=0
We add all the numbers together, and all the variables
4y(-1y+5.9)-14.8=0
We multiply parentheses
-4y^2+23.6y-14.8=0
a = -4; b = 23.6; c = -14.8;
Δ = b2-4ac
Δ = 23.62-4·(-4)·(-14.8)
Δ = 320.16
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
y1=−b−Δ√2ay2=−b+Δ√2a
y1=−b−Δ√2a=−(23.6)−320.16√2∗−4=−23.6−320.16√−8
y2=−b+Δ√2a=−(23.6)+320.16√2∗−4=−23.6+320.16√−8
If the measure of AngleB is 40°, what measures can AngleA and AngleC be? Select the three correct answers. 20° and 30° 30° and 110° 55° and 85° 60° and 90° 70° and 70°
Answers
Answer:
30° and 110°
55° and 85°
70°and 70°
Step-by-step explanation:
Given that :
Angle B = 40°
Sum of angles in a triangle :
Angle (A + B + C) = 180°
A + 40 + B = 180
A + C = 180 - 40
A + C = 140°
From the Given options ;
The sun of the Angles Given must add up to 140°
Hence,
30° and 110° = 140°
55° and 85° = 140°
70°and 70° = 140
SOMEONE HELP ME PLEASE ASAP AND SHOW THE WORK I WILL MAKE YOU BRAINLIEST AND GIVE YOU A GOOD RATE!!!!! SOMEONE HELP ASAPPPPPPPPPPPPPP!!!!!!!!!!!!!
Answers
Answer:
5x+10=30
Step-by-step explanation:
sorry, it does not have any works/steps in forming this equation.
Solving equation(if needed):
5x+10=30
5x=20
x=4
Answer: you can count by fives 5,10 15,20,25,30
Step-by-step explanation:
FIRST CORRECT ANSWER GETS BRANLIEST !!!!!!!!
Answers
Answer:
4 - 1 = 3
10 - 6 = 4
Step-by-step explanation:
explain why 1/12 + 1/2= 7/12
Answers
Answer:
1/12 + 1/2 = 1/12 + 6/12 - 1+6/12 = 7/12
Step-by-step explanation:
hope this makes sense
Step-by-step explanation:
1/2 of 12/12 is 6/12.
So, this means: 1/12 + 1/2 = 7/12
is
1/12 + 6/12 = 7/12
The temperature dropped 20 degrees from noon to midnight. The temperature at midnight was 24°F. Write and solve an equation to find the temperature at noon?
Answers
Add 20 to both sides
x = 24 + 20 = 44
7(x-2)=28 Can somebody help me and show the steps?
Answers
7(x-2)=28
7X-14=28
7x=42
X=6
AYO PLEASE HELP ILL GOVE YOU BRAINLIEST
Answers
it's a i think, hope this helps
1 and 1/5y+3/10y-1/2y=1/3y+2/5
Answers
6/30y + 9/30y - 15/30y - 10/30y = 2/5
-10/30y = 2/5
y = 2/5 x (-30/10)
y = -6/5
Answer: y=12/20=0.6
Step-by-step explanation:
Rephrase the given equation
1 and 1/5y+3/10y-1/2y=1/3y+2/5
6/5y+3/10y-1/2y=1/3y+2/5
Find the GCF (greatest common factor) and multiply it on both sides
(6/5y+3/10y-1/2y)×30=(1/3y+2/5)×30
36y+9y-15y=10y+12
Add like terms together
30y=10y+12
Subtract 10y on both sides
30y-10y=10y+12-10y
20y=12
Divide 20 on both sides
20y/20=12/20
y=12/20=0.6
Hope this helps!!
Please let me know if you have any questions
You are making curtains for your little sister's dollhouse. There are 24 windows on the dollhouse and each
needs 3.75 inches of fabric for curtains. How much fabric will you need?
(please help I only have a couple of minutes)
Answers
Answer:
90 inches
Step-by-step explanation:
24 x 3.75 which is the same as 24 x 3 3/4 which is the same as
24 x 15/4 = 6 x 15 = 90
solve the equation t8/t2 = _____
Answers
Answer:
[tex]t^{6}[/tex]
Step-by-step explanation:
I am going to assume exponents for this question.
[tex]\frac{t^{8}}{t^{2}}[/tex]
When dividing exponents with the same base, it is simply subtraction, so 8 - 2 = 6 which produces the answer.
Was hit with a hard one. Can someone explain this to me please?
Answers
Answer:
Step-by-step explanation:
Help with this plz ASAP
Answers
Answer: y=2x-4
Step-by-step explanation:
8th grade math! If you know the answer to this problem please interact(:
Answers
Answer:
the third one (-2,1)
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
so solving the first one we get
y=2x+5
and the second one we get
y=5x+10+1
y=5x+11
substiuting we get
2x+5=5x+11
3x=-6
x=-2
and y= 1
so it would be C
if my answer helps please mark as brainliest.
Evaluate the exponential function
f(x) = 3x ; x = -2
Answers
Answer:
-6
Step-by-step explanation:
Plug (-2) in for X in the equation
3(-2)
-6
Find the surface area of the figure shown. The surface area of the figure is
5.1 ft
4 ft
2 ft
8.2 ft
Answers
Which of the following quantities are to the left of zero on a number line? Select three that apply.
A The opposite of 7
B The opposite of -9
С
3
D
-4
m
Answers
Answer:
A, D, and E
Step-by-step explanation:
because they are negative
Jenny makes bottle cap necklaces for the Bottle Cap Boutique. Each necklace has 6 small bottle caps on it. If she has 2,520 bottle caps, how many necklaces can she make?
Answers
Answer:
420
Step-by-step explanation:
The trend line passes through (10,9) and (35,0). Write an equation for the trend line.
Answers
Answer: Solution :
Step 1 :
Make a scatter plot of Lily’s running data.
Step 2 :
To draw a trend line, use a straight edge to draw a line that has about the same number of points above and below it. Ignore any outliers.
Step 3 :
Find the slope of the trend line.
The line passes through points (2, 20) and (4.5, 45).
Use the slope formula.
m = (y2 - y1) / (x2 - x1)
Substitute x1, = 2, y1 = 20, x2 = 4, and y2 = 45.
m = (45 - 20) / (4.5 - 2)
m = 25 / 2.5
m = 10
Step 4 :
Find the y-intercept of the trend line.
Slope-intercept form equation of a line :
y = mx + b
Plug y = 20, m = 10 and x = 2.
20 = 10 · 2 + b
20 = 20 + b
Subtract 20 from both sides.
0 = b
Step 5 :
Use your slope and y-intercept values to write the equation.
Slope-intercept form equation of a line :
y = 10x + 0
So, the equation for the trend line is
y = 10x
Example 2 :
David records the number of chapters and the total number of pages for several books as given below.
No. of chapters
3
4
5
8
10
11
15
17
19
No. of pages
20
44
50
95
90
130
125
170
160
Step-by-step explanation:
