BRAINLIEST GUARANTEED. Please Answer and show work. I'm not sure if it's correct though.
Answers
Answer:
They all look right but i'm not sure about the last one?
Step-by-step explanation:
Answer:
A) False
B) True
C) True
D) False Solution is actually (-3, -3)
work below
Note: Used Elimination Method
Multiply the first equation by -2,and multiply the second equation by 1.
−2(−2x+y=3)
1(3x+2y=−15)
Becomes:
4x−2y=−6
3x+2y=−15
Add these equations to eliminate y:
7x=−21
Then we solve 7x = −21 for x:
7x = −21
7 7
(we Divide both sides by 7)
x=−3
Now that we've found x let's put it back in to solve for y.
Put down an original equation:
−2x+y=3
Substitute−3 for x in−2x+y=3:
(−2)(−3)+y=3
y+6=3(Simplify both sides of the equation)
y+6+−6=3+−6(Add -6 to both sides)
y= −3
Solution
(-3, -3)
Related Questions
On a map drawn to scale, 5 cm represents 30 kilometers. If a line a the same map that connects 2 cities is 7 cm long, what is the distance between the 2 cities?
Answers
Answer:
42
Step-by-step explanation:
You can use proportions to solve this problem.
[tex]\frac{5cm}{30km}[/tex]=[tex]\frac{7cm}{xkm}[/tex]
Now just cross multiply.
5cm*Xkm=7cm*30km
you can simplify the cm and km since its multipying.
5x=210
x=42
The diagram below gives the lengths of all but one side of pentagon ABCDE. What is the
perimeter of pentagon ABCDE?
12 cm
Perimeter =
8 cm
4cm-
15 cm
hurry asap i need it by tomorrow!!
Answers
Answer:
44
Step-by-step explanation:
[tex]BC^{2} = (15-12)^{2} + (8-4)^{2}\\BC^{2} =9 + 16\\BC = \sqrt{9+16} \\BC = \sqrt{25} \\BC = 5[/tex]
P = 12 + 15 + 8 + 4 + 5 = 44
algebra 1. please help me. i’m literally struggling , i’ll give an extra 50 points if it’s right and brainliest. - question in picture
please don’t use me for points i really need help, i’m already failing and so stressed
Answers
Answer:
15x² - 3x - 7
Step-by-step explanation:
(12x² + 2x) - (-3x²+ 5x + 7)
First open the parentheses by applying the distributive property.
To do this, multiply each term you have inside (-3x⅔ + 5x + 7) by -1.
Thus, you would have the following:
12x² + 2x + 3x² - 5x - 7
Add like terms
12x² + 3x² + 2x - 5x - 7
15x² - 3x - 7
Multiple Choice: A prism and a pyramid have identical bases and heights. The volume of the prism is: Twice as large as the pyramid's volume One third as large as the pyramids's volume Three times as large as the pyramid's volume Equal to the pyramid's volume
Answers
Answer:
Three times as large as the pyramid's volumeStep-by-step explanation:
Let the volume of prism be Vp
Let the Volume of pyramid be Vy
Vp = Base Area * Height .... 1
Vy = Base * Height/3 ....2
From 2;
Vp = BH/3
BH = 3Vy
Since Vp = BH, then;
Vp = 3Vy
This shows that the volume of prism is three times as large as pyramids volume
A shopper pays $45 for 3 packs of T-shirts. If each pack costs the same amount and contains
5 T-shirts, what is the cost per T-shirt?
Answers
Answer:
$3Step-by-step explanation:
3 packs each 5, then total T-shirts:
3*5 = 15Total cost:
$45Cost of one T-shirt:
$45/15 = $3Each pack costs
45/3$15Each T shirt costs
15/5$5please help which multiple choice answer is it
Answers
Answer:
it's the 3rd answer
Step-by-step explanation:
moves around the line just like the shape shows
Answer:
The answer would be C
Step-by-step explanation:
If you were to revolve the figure shown in C you would get the figure above
PLEASEE MY LAST POINTS!!!!!! PLEASE HELP :(
Answers
................ 9 kg 9 g = .....kg
Answers
Answer:
Step-by-step explanation:
9009g = 9kg 9g
The set for a school play needs a replica of a historic building painted on a backdrop that is 20 feet long and 16 feet high. The actual building measures 320 feet long by 256 feet high. A stage crewmember writes (x, y) arrow right ( 1/20 x, 1/20y) to represent the dilation. Is the crewmember's calculation correct if the painted replica is to cover the entire backdrop? Complete the explanation.
Answers
Answer:
Stage crewmember's calculation is incorrect
Correct = 1/16x 1/16y
Step-by-step explanation:
Given that:
Dimension of backdrop : 20 feets long ; 16 feets high
Actual dimension of building : 320 feets long ; 256 feets high
The correct scale factor can be obtained thus :
Ratio of backdrop dimension to the actual dimension of building
Length : 20 / 320 = 1 /16
Height : 16 / 256 = 1/16
Hence, stage crewmember's calculation of (1/20x ; 1/20y) is incorrect.
Luis is 0.25 meters shorter than Harry, if Luis is 1.7 meters tall determine Harry’s height.
Answers
Answer: 1.95
Step-by-step explanation:
Luis is Harry's height minus 0.25m, which means Harry is Luis' height plus 0.25m.
Luis + 0.25 = Harry
1.7 + 0.25 = 1.95 m
Slope
Rate Of Change
Pls Help
Answers
Answer:
-1/2
Step-by-step explanation:
A cell phone is on sale at $35
more than half of the regular
price. The sale price is $140.
Determine the regular price of the
cell phone.
Answers
Answer: v=210
Step-by-step explanation:
Need help quick! Will give brainliest to first right answer.
Which system of equations has no solution?
O 5x+5y = 10 and 2x+2y=4
O 3x-6y = 4 and - 4x+8y=7
O 6x+2y = 6 and 7x+3y=9
O 3x-4y = 16 and 2x+3y = 5
Answers
Answer:
the first one or the last one
Step-by-step explanation:
5x+5y = 10 and 2x+2y=4
0 = 0
3x-6y = 4 and - 4x+8y=7
0 = 37 / 3
6x+2y = 6 and 7x+3y=9
0 = 3
3x-4y = 16 and 2x+3y = 5
x=4 and y=−1
mencioné tres aparatos tecnológicos que hacen su diseño o utilicen para su fun
cionamiento ruedas de fricción
Answers
How do I solve this? i don't know how to set it up.
Answers
Answer:
yes
Step-by-step explanation:
Answer:
31.5
Step-by-step explanation:
First we want to find what side NP is equal to. To do that we divide 4 by 12
12/4=3 so side mp=3
next we want to find the scale factor of the rectangles. to do that we divide 4 from 9
9/4=2.25
next we want to find what side st is equal too
to do that we multiply 3 by 2.25
3x2.25=6.75
finally we want to find the perimeter and to do that we do 2(6.75)+2(9)
2(6.75)+2(9)=31.5 so the perimeter of rectangle RSTU is 31.5
hope this helps :)
Write an explicit formula for a_na
n
, the n^{\text{th}}n
th
term of the sequence 45, 15, 5, ...45,15,5,....
Answers
Answer:
the answer is 3n+7 please do you get it
please help me i would really appreciate it
i will mark brainliest if you dont play around
Answers
Answer:
Step-by-step explanation:
The total number of triangles is 5
The total number of all shapes is 13
The ratio is triangles to total
The ratio is 5 to 13
Note
This problem is not very well defined. Notice the circle at the bottom left. It's less than 1/2 a circle. Question: do you count it or don't you. The answer to that question will influence other partial figures.
All you do is count the total number of figures and the number of triangles. I did count the part circle on the lower left as with the triangles that are missing their tops.
Now that we know how much 1 pound costs, we can determine how much 9 pounds will cost.
What would be the cost of 9 pounds of salmon?
$0.94
$76.50
$17.50
$0.50
help asap plzzzzzz
Answers
Answer:
76.5
Step-by-step explanation:
I need help with this question. I didn't choose answer D, but I accidentally did. If you could help me, that would be great.
Answers
Answer:
The correct answer would be B
Step-by-step explanation:
Plz Mark Brainlist
PLEASE HELP Camille went for a 45-minute walk. If she
burned an average of 3.2 calories each
minute, how many total calories did she burn
Answers
Answer:
144
Step-by-step explanation:
multiply 3.2 by 45, or calories burned by minutes walked
What is the solution to -3x+23-7?
O x>-12
O x>12
O x<12
O x<-12
Answers
1. There are 6 feet of ribbon in a roll. Samantha uses 3/4 foot pieces of ribbon to decorate gifts. How
many gifts can she decorate with one roll of ribbon?
Write an equation (with solution) to represent
this problem
Answers
Answer: 8
Step-by-step explanation:
take 72 inches and divide it by 9 inches and you will have the answer
In the diagram shown, CD is the image of AB after a reflection across line EF . Which of the following pairs of segments do not have to be the same length.
(1) AB and CD
(2) BF and EF
(3) AE and CE
(4) BF and DF
Answers
Tesfa is x years old. his father is 4 times as old as Tesfa. Her mother is 7 years younger than his father. If their three ages add up to 101 years, how old is Tesfa?
Answers
tesfa = x
dad = 4x
mom= 4x-1
x+4x+4x-1=101
9x+1=101
9x=100
100/9= 11.1
Jen uses 8.6 gallons of gasoline to drive 164.7 miles. Which is the best estimate for the number of miles per gallon of gasoline her vehicle gets?
Answers
Answer:
19.15 miles/gallon
Step-by-step explanation:
Gasoline used = 8.6 gallons
Distance driven = 164.7 miles
Number of miles per gallon = Distance driven / Gasoline used
= 164.7 miles / 8.6 gallons
= 19.151162790697 miles/gallon
Approximately 19.15 miles/gallon
Number of miles per gallon of gasoline her vehicle gets is 19.15 miles/gallon
I need help please please 20 points!!
Solve for x.
Answers
Answer:
13+8 = 7+ x
21=7+x
21-7 = x
x = 14
aaa help please
8(y + 3) – 3y
Answers
Answer:
What are we trying to find?
Step-by-step explanation:
Answer:
=5y+24
Step-by-step explanation:
Distribute:
=(8)(y)+(8)(3)+−3y
=8y+24+−3y
Combine Like Terms:
=8y+24+−3y
=(8y+−3y)+(24)
=5y+24
a) − 5 ( 6 n + 6 ) ≤ 30
b) 8 v − 4 ( v − 8 ) > 8
Answers
Answer:
a) n ≥ -2
b) v > -6
Step-by-step explanation:
You did not state what you would like us to do with these. I will assume simplify.
a)
− 5 ( 6 n + 6 ) ≤ 30 first, distribute -5
-30 n + -30 ≤ 30 now, add 30 to both sides so we may isolate n our variable
-30 n ≤ 60 now, divide -30 on both sides so we may isolate n completely. When we do this, the sign changes direction
n ≥ -2
b)
8 v − 4 ( v − 8 ) > 8 first, distribute -4 (note: two negatives equal a positive)
8 v - 4v + 32 > 8 now, simplify
4v + 32 > 8 now, subtract 32 from both sides
4v > -24 now, divide both sides by 4 to isolate v
4v > -24
v > -6
Hope this helps! Please make brainliest <3
How do the volumes of cylinders, cones, and spheres relate to each other if they have the same radius and height?
Answers
Answer:
search it up
Step-by-step explanation:
Can see please help me with the 2 equations (in the picture) find x
Answers
Answer:
1. x = 2
2. couldn't figure out. sorry
Step-by-step explanation: