Consider the following system of equations.
3x + 5y = 18
6x − 5y = 20
Decide which procedures eliminate the x variable and which eliminate the y variable. Drag and drop each procedure that will eliminate one of the variables into the appropriate category.
Subtract the second equation from the first equation.
Add the first and second equations. Multiply the first equation by −2; then add the two equations.
Divide the second equation by −2; then add the two equations. Subtract the first equation from the second equation.
Multiply the first equation by 2 then add the two equations.
Eliminate x Eliminate y
Answer:
Option B
On adding the first and second equations y can be eliminated
Step-by-step explanation:
The two equations are as follows
3x + 5y = 18 -- Eq (1)
6x − 5y = 20 -- Eq (2)
Adding equation 1 and 2, we get -
3x + 6x + 5y -5y = 18
9x = 18
x = 2
y = (18-3*2)/5
y = 12/5 = 2.4
Please help ASAP
I will give brainleist and 100 extra points
Answer:
Possibly C, but im sorry if im wrong
Step-by-step explanation:
Based on this data, what is a reasonable estimate of the probability that the next type of stir fry ordered is shrimp? Choose the best answer. Choose 1 answer: Choose 1 answer:
Answer: it is 0.28 C
Step-by-step explanation: I got it right in khan
funniest thing you'll see all day
Answer:
My dog getting smacked allot by my cat ( my cat was bullying my dog all day XD) 1 thanks = one less smack for the dog lol
Step-by-step explanation:
Me kat (cat) was mewing all day. Me go to market to buy his favourite food (fish).Me comes home. Me takes time to prepare fish. Me gives kat fish. He throw away fish and insult me with some more mews
ANSWER FOR BRAINLIEST AND 50 POINTS:
The high temperatures for the last seven days are: High Temperatures: 81, 78, 83, 89, 80, 87, 78
Find the MEAN of the temperatures. Round to the nearest tenths place.
A. 82.3
B. 89
C. 83
D. 78
Answer:
A.
mean=82.286
Rounded to the tenths place would be= 82.3
Step-by-step explanation:
The Mean is found by adding all of the values together
Then dividing it by how many values there are.
In this instance, all the values added up equal 576
576 now will be divided by how many temperatures are recorded.
576/7=82.286
82.286 Rounded to nearest tenth=82.3
show your work
B= 47, a = 20, c = 24
Answer:
Im lost what is this
Step-by-step explanation:
Answer:
43
Step-by-step explanation:
a+b-c
20+47-24
67-24
43
Rotate 90° clockwise about the origin
E = (-3, 3)
F = (-2, -1)
D = (-2, 3)
C = (-1, 4)
Answer:
e
Step-by-step explanation:
Which point does not pass through?
10 Points
Answer:
C ( 9 , 15)
Step-by-step explanation:
500(x – 3) = 5,000
What’s the value of x?
Answer:
13
Step-by-step explanation:
500(x-3)=5000
500x-1500=5000
500x=5000+1500
500x=6500 /:500
x=13
Answer:
13
Step-by-step explanation:
cuz
13-3=10
10x500=5000
Missy Diwater, the former platform diver for the Ringling Brothers’ Circus has a mass of 68kg jumps from a height of 8m. What is her potential energy
What is 1.4. 106 written in standard notation?
O A. 140,000
B. 14,000,000
O C. 104,000
D. 1,400,000
E. 10,400,000
F. 1,040,000
Helen has a box of marbles.
12
of the marbles are yellow.
18
of the marbles are red.
The rest of the marbles are blue.
Helen pulls one marble out of the box at random, records its color, replaces it, and mixes up the marbles again. If she does this 200 times, how many blue marbles should she expect to pull out?
Answer:
I don't know because I don't know how many total marbles there are. If you know how many marbles there are in total that would help me figure out the problem.
Step-by-step explanation:
Use the law of cosines to find the value of X
0. A hardware store sold h hammers in February. The hardware store sold 5 less than 2 times as
many hammers in June as it did in February. Write an expression the hardware store could use
to represent the number of hammers it sold in June.
Answer:
2h - 5Step-by-step explanation:
Sold in February = hSold in June = 2h - 5Answer:
solution given:
let hammers be H
now
an expression the hardware store could use to represent the number of hammers it sold in June is 2H-5
what is the volume of the rectangular prism?
PLZ I'M TIMED I WILL MARK BRAINLYEST!
Answer:
12.5 x 8 x 2 = 200 in ³
Step-by-step explanation:
Need more help guys :(
Step-by-step explanation:
Write a rule to describe the transition of a point from (-3,3) to (-2,2)
In the answers, we see that the rule must be formatted as:
(x,y) ⇾ (x _ 1, y _ 1)
Soo . . we take the first x (-3) and the second x (-2) and try the 2 methods:
-3 - 1 = -4
-3 +1 = -2
So we see that the first one has to + 1
Here's the rule so far.
(x,y) ⇾ (x + 1, y _ 1)
Next, take the first y (3) and the second y (2) and repeat the 2 methods:
3 + 1 = 4
3 - 1 = 2
Here we get that we have to - 1
Therefore, the rule to describe the transition of a point from (-3,3) to (-2,2) is:
(x,y) ⇾ (x + 1, y - 1)
Which is option 4 or D.
Hope this helps you understand a bit better! =)
Find the product of 0.25 x 16
Answer:
4 is the answer
0.25*16 = 4
Step-by-step explanation:
product means multiplication..
what grade level is this?
Have a nice day!
Fernanda is filling a cylindrical pot with cans of vegetable soup. The pot has a diameter of 15 in. and a height of 11 in. The soup can has a diameter of 3 in. and a height of 6 in. How many cans of soup will it take to fill the pot? Round to the nearest can.
Answer:
45 cans
Step-by-step explanation:
To find the volume of a cylinder, we need to find the area of the cross section, which in this case is π(radius)², and multiply it with the height of the cylinder
This means the pot has a volume of:
- pot has radius of 7.5in. as diameter is 2 x radius
π x (15/2)² x 11 = 618.75π in.³
The soup can has a volume of:
- soup can has radius of 1.5in. as diameter is 2 x radius
π x (3/2))² x 6 = 13.5π in.³
Divide the volume of the pot by the volume of the can to get how many cans of soup will it take to fill the pot:
618.75π in.³ ÷ 13.5π in.³ = 45.833... cans
The question states you need to round to nearest can which would be 45 cans, but personally, I thought you would always round up as 45 cans won't fill up the whole pot, but it's up to the question.
What is the lateral surface area?
7 A cylindrical pipe measures 18 inches and has a diameter of 1 inch. How many square inches of metal
are used to make the pipe, which is open on both ends? Round your answer to the nearest hundredth.
Answer:
56.556 square inches
Step-by-step explanation:
Surface area of an open cylindrical pipe is = πdh
3.142 × 1 × 18 = 56.556
find the measure of the exterior angle
Answer:
[tex] \huge\mathfrak\pink{S} \huge\mathfrak\purple{o} \huge\mathfrak\blue{l} \huge\mathfrak\red{u} \huge\mathfrak\green{t} \huge\mathfrak\pink{i}\huge\mathfrak\purple{o}\huge\mathfrak\red{n}\huge\mathfrak\orange{➔}\ [/tex]
2a=a+10+44°[exterior angle of a triangle is equal to the sum of two opposite interior angle]
2a-a=54°
a=54°
.so
exterior angle=2×54°=108°is your answer
what is perimeter? what is area?
Including the floor, how many faces are there?
find sin x/2 given that sin x=1/4 and 0
Answer:
Step-by-step explanation:
find sin x/2 in radians, given that sinx =1/4 and x terminates in 0 less than x less than pi/2
✓ sinx=1/4=opp side/hypotenuse adj side=√(4^2-1^2)=√(16-1)=√15 cosx=√15/4 sin x/2=√[(1-cosx)/2]=√[(1-√15/4)/2] .. calculator check: sinx=(1/4
The value of sin x/2 for sin x=1/4 and 0 is 0.124 and 0 respectively.
Given that, sin x=1/4 and 0.
We need to find sin x/2.
How to find the value of sin?The sin formula is given as sin θ = Perpendicular / Hypotenuse.
Now, for sin x=1/4
sin 1/4/2=sin 1/8=0.124
=0.124
For sinx=0
sin 0/2=0
Hence, the value of sin x/2 for sin x=1/4 and 0 is 0.124 and 0 respectively.
To learn more about sine visit:
https://brainly.com/question/16853308.
#SPJ2
I need help no links 20 points
Answer:
t x 1/8 = n 1/8 = 0.125 in decimal form!!
Step-by-step explanation:
Least to greatest 3 1/7 ,1.73,4 ,2.24
Answer:
1.73, 2.24, 3 1/7,4
Step-by-step explanation:
You do the whole numbers first, and then the decimal or fraction.
A square photograph has a side length of x + 8. It is
surrounded by a frame that is 2 inches wide all the way
around. Write a simplified expression for the area of
just the picture frame.
Answer:
(x + 10)^2
Step-by-step explanation:
*It helps to draw a diagram for these types of questions
Side length of photograph: x + 8
Width of frame: 2 in.
Area of a square: s^2
A = ((x + 8) + 2)^2
= (x + 10)^2
Therefore the area of the photograph with the frame is (x + 10)^2
Answer:
8(x + 10) or 8x + 80Step-by-step explanation:
Area of the picture:
(x + 8)²Side of the photograph with the frame:
(x + 8) + 2*2 = x + 12Area of the frame:
(x + 12)² - (x + 8)² = (x + 12 + x + 8)(x + 12 - x - 8) = (2x + 20)(4) = 8(x + 10)or
8x + 80Quelqu'un pourrais m’aider à faire cette exercice svp
Réponses:
1. pour calculer la distance OF on va utiliser tout simplement le théorème de pythagore
OF = √(68²+51²)
OF = √(4624+2601)
OF = √(7225)
OF = 85 mm
2. étant donné que la cible n'est pas atteinte si la pointe de la flèche est sur le bord, et on sait que le rayon de la cible est 100
donc la distance OF ne doit pas dépasser le nombre 100
OF < 100
3. la suite de la question trois n'est pas affichée malheureusement!
bonne journée ^^
Find the Interquartile Range (IQR) of the data set.
5, 2, 3, 4, 7, 9, 8, 10, 12, 8, 7
Answer:
5
Step-by-step explanation:
find the circumference of the pizza use 3.14 the pizza is 7 inches
Answer:
45 inches
Step-by-step explanation:
C = (pi)(diameter).
Assuming that the radius of the pizza in this case is 7 inches, the diameter is twice that, or 14 inches.
Thus, the circumference of the pizza is C = (3.14)(14 inches) = 45 inches
approximately.
The following are the last 10 run scores Colin got in cricket:
18, 9, 7, 35, 30, 21, 33, 12, 30, 31
a) Work out Colin's mean score.
b) Colin plays cricket again on Sunday. He gets 27 runs.
What is his new mean score?
Give your answers as decimals.
Answer:
a) 22.6
b) 23
Step-by-step explanation:
a)
Step 1: 18 + 9 + 7 + 35 + 30 + 21 + 33 + 12 + 30 + 31 = 226
Step 2: 226/10 = 22.6
b)
Step 1: 226+27 = 253
Step 2: 253/11 = 23