Answers
Answer:
1) x: small #; y: large #
4y = 7x
x + y = 22
----------------
-7x + 4y = 0
x + y = 22
---multiply the second equation by -4------
-7x + 4y = 0
-4x - 4y = -88
----solve------
-11x = -88
x = 8
---substitute with any of the equation above i chose the very first one------
4y = 7(8)
4y = 56
y = 14
x = 8; y = 14
2) x = small #; y = large #
y - x = 15
5x = y - 9
----after rearranging, solve-----
-x + y = 15
5x - y = -9
-4x = 6
x = -1.5
--------substitute--------
-(-1.5) + y = 15
1.5 + y = 15
y = 13.5
x = -1.5; y = 13.5
3) x = lemon cream; y = fudge cookie
3x + 2y = 400
2x + 3y = 425
----multiply the first equation by -2, multiply the second equation by 3------
-6x - 4y = -800
6x + 9y = 1275
----solve------
5y = 475
y = 95
--------substitute--------
3x + 2(95) = 400
3x + 190 = 400
3x = 210
x = 70
x = 70; y = 95
Related Questions
Which cereal box deal has the best price per ounce?
$9.13 for 39 oz
$6.12 for 24 oz
$4.98 for 18 oz
$3.56 for 14 oz
Answers
Answer:
I believe it is A.
i hope this helped
can u plz help me on this plz.
Answers
Answer: no questions
Step-by-step explanation:
Two bags each contain black and white marbles, as shown below. If Karl draws one marble from each bag, what is the probability that they will both be black?
A.3/7
B.1/6
C.11/12
D.3
Answers
Answer:
The answer is A
Step-by-step explanation:
Hope this helps!
:)
Answer:
I think A. But I'm not 100% sure.
Step-by-step explanation:
A. does 24 ft = 2in ?
Answers
No, your answer should be,
[tex]\Huge\boxed{288}[/tex]
To convert feet into inches, you multiply the length value by 12. Your mistake is you got it mixed-up. 24ft doesn't equal 2in, but 24in equals 2ft, because instead of multiplying 12, you divide by 12.
24ft → 288in
24 × 12 = 288
24in → 2ft
24 ÷ 12 = 2
Hence, 24ft doesn't equal 2in.
Solve for x.
3x + 4x = 14
X =
please explain how you got the answer too
Answers
You add 3x and 4x which is 7x then divide 14 by 7 which is 2
Anquan rolls a number cube (numbered 1-6)
50 times. Which is the closest to the number of
times he should expect the cube to land with
the number 6 facing up.
A. 6
B. 8
C. 12
D. 14
Answers
Answer:
B
Step-by-step explanation:
theoretical probability of rolling a 6 is 1/6
1/6 multiplied by 50 is 8.3
help pls i don't do good on these
Answers
Answer:
its 90
Step-by-step explanation:
don't feel like explaining
Sam found the area of a polygon. The area is 36 in2. Which of these polygons has an area of 36 in2? Explain your reasoning.
Answers
Answer:
C
Step-by-step explanation:
Because:
4x3:2=6in2
4x3:2=6in2
3x8=24in2
24in2+6in2+6in2=36in2
Answer:
C is correct
Step-by-step explanation:
I did the math again the other person is correct
In a wildlife preserve, a random sample of the population of 150 raccoons was caught and weighed. The results, given in pounds, were 17, 19, 19, 24, 25, 27, 30, 31, 31, and 32. Jean made the qualitative statement, "The average weight of the raccoon population is 26 pounds." Is her statement reasonable? Complete the explanation.
Jean's statement (is/is not) reasonable because the median value of the data is _________ pounds.
Answers
Answer:
Jeans statement is reasonable because the median value of the data is 26 pounds
Step-by-step explanation:
does anyone know what comes after a teraanumm? (like a century, decade, millennium, myriad, etc) I will give you the brainiest answer if you can tell me!!! (if you do it for points you will get a warning)
Answers
Answer:
Step-by-step explanation:
Decade Ten years
Century One hundred years
Millennium One thousand years
Decem millennium Ten thousand years
Centum millennium One-hundred thousand years
Mega-annum or Epoch One million years
Aeon One billion years
PLZ Help me ima just be posting alot of stuff i need help with :)
Answers
You randomly choose one of the tiles. Without replacing the first tile, you randomly choose a second tile. Find the probability of the compound event. Write your answer as a fraction or percent rounded to the nearest tenth.
Answers
Evaluate each expression for the given variable.
(5) 3(x + 4) - x when x = 2
2
(6) 5p + 9 + 2p + 5 when p = 5
2 3
Answers
Step-by-step explanation:
1.) 3(x + 4) - x. when x - 23(2 + 4) - 2
3 × 6 - 2
18 - 2 = 16
2.) 5p+9+2p+5. when p - 55 × 5 + 9 + 2 × 5 + 5
25 + 9 + 10 + 5
49.
When p=5 the answer is 49
Hood this helps
which way do i turn it and wut are my points? will give brainliest
Answers
Answer:
Average age of 6 boys is 12 years. The average age of 4 other boys is 18 years. Find the average age of all 10 boys.
A
12 years
Step-by-step explanation:
Scott's gas tank is 1/3 full. After he buys 12 gallons of gas, it is 7/9 full. How many gallons can Scott's tank hold?
Answers
Answer: We start with the variable "x". Let's call "x" Dan's full tank.
So we know that right now he has 1/3x or 1/3 of a full tank.
After adding 12 gallons, at the end, he has 7/9x, or 7/9 of a full tank
So we start with
(1/3)x + 12 = 7/9x
Let's subtract 1/3x from both sides
12 = 7/9x - 1/3x
Remember, we need to use common denominators to subtract, so 1/3 becomes 3/9
12 = 7/9x - 3/9x
Now we simplify to get
12 = 4/9x
Multiply the reciprocal of 4/9 to both sides which is 9/4
12 * 9/4 = x
Answer is 27 gallons.
A 12-sided die is numbered 1-12. What is P(rolling a number less than 7)
Answers
Answer:
1/2
Step-by-step explanation:
This 12-sided die has 6 surfaces (sides) numbered less than 7. Thus,
P(rolling a number less than 7) = 6/12 = 1/2
leven purple marbles, seven orange marbles and two pink marbles are in a bag. What is the probability of selecting a purple marble, not replacing it, and then selecting an orange marble?
Question 4 options:
19%
20%
21%
22%
Answers
Answer:
The probability of picking a purple marble, and then, not replacing picking an orange marble is approximately 20%
Step-by-step explanation:
First we know that there are 20 marbles in the bag, so the probability of picking a purple marble is 11/20. If we take a purple marble out, there will only be 19 marbles remaining in the bag. So the probability of picking an orange marble would be 7/19. Now, all we need to do is multiply the 2 fractions, and we will get 77/380 which equals to which is approximately 20% .
The answer is 20%
Emily has a cube with an edge of 8cm. If she wants to paint it, how many square centimeters will she paint?
Answers
Answer:
384 cm ^2
Step-by-step explanation:
Basically, we're finding the surface area.
The cube is 8*8 all around
Each box has an area of 64cm each.
There are 6 sides on a cube.
64*6 = 384
Hopefully this made since.
The translation above shows an object moving?
Answers
Answer:
A I think, but these question were never by strongest point in math.
Step-by-step explanation:
Answer:
A 8 to the right 6 up
Step-by-step explanation:
All you have to do is count the number of spaces between the two
The first person to answer this correctly with an explanation gets Brainiest.
Answers
Answer:
1.) The height of the cone is 10 and the volume is 2355
2a.) Height 5= Volume 1177.5.
2b.) Height 30= Volume 7065
3.) (I'm not exactly sure because I haven't done this in a while.)
I guess 30= diameter
4.) 1 unit of height = 235.5 units of volume
Sorry if i messed up 3 or 4. I haven't calculated this stuff in a while.
Step-by-step explanation:
1.) It says the height of the cone on the horizontal ray and volume of the cone of the vertical ray.
2.) Divide 10 by 2 to get 5 height - Divide 2355 by 2= 1177.5
2b.) Multiply 10 by 3= 30 height - Multiply 2355 by 3= 7065
3.) r= √3× (V ÷ h) subtitute: r= √3× (2355 ÷ 3.14× 10)
simplify: r= 14.99... Diameter = 2 radius so about 30
4.) Divide 2355 by 10 to get the unit ratio. 1 unit of height is 235.5 volume.
Nadia's grades on four quizzes were 95, 75, 85, and 95. Find the mean, median, and mode for Nadia's grades.
Answers
Answer:
mean: 87.5
median: 80
mode: 95
What is mean? : the sum of a collection of numbers divided by the number of numbers in the collection so for this is:
95+75+85+95= 350 divided by 4 because there's 4 numbers = 87.5 which is the mean
What is median?: The median is the value separating the higher half of a data sample so for this think of crossing each number at the opposite sides: 95 and 95 cancel now your left with 75 an 85 add them up and divide by 2 because there's 2 numbers **for median you are either left with 1 number or 2 if the case is 2 you ADD first then divide by 2 ALWAYS**: 75+85= 160/2= 80 for median
What is mode?: The mode is the value that appears most often in a set of data. So as we know 95 repeats the most
Mean: all numbers added up then divided by the number of numbers u have. So 95+95+85+75= 350 divided by 4 = 87.5
Mean=87.5
Median: the middle number. So after the numbers r ordered from greatest to least take one number off each side until u get to the middle. In this case there are two middle number 95 and 85 so u add them then divide by 2 95+85= 180 divided by 2= 90
Median= 90
Mode: the number that repeats most in the set of numbers. In this case the mode is 95 because there r 2 95s
Mode: 95
Use either the commutative property or combine like terms to create an equivalent expression
from the expression 9(2j + 5j).
Answers
Answer:
9(7j)/63j
Step-by-step explanation:
9(2j+5j)
= 9(7j)
= 63j
How many pounds of cashew nuts worth 75 cents a pound must be mixed with 10 pounds of pecans worth $1.50 a pound to make a mixture worth $1.00 a pound? Which of the equations could be used to solve for p, the pounds of cashew nuts?
75 p + 150(10) = 100( p + 10)
75 p + 150 = 100( p + 10)
75( p + 10) + 150(10) = 100( p + 10)
Answers
Answer:
75p+150(10)=100(p+10)
Simplify -24 • 3
Giving Brainliest^^
A) -27
B) -72
C) 27
D) 72
Answers
Answer:
-72 is the answer for your question
Answer:
-24 • 3 = - 72• - 72Step-by-step explanation:
#CarryOnLearning
PLEASE HELP! I CANT GET A BAD GRADE!
--------------------------------------------
Consider the data below.
2, 2, 2, 3, 5, 6, 8, 30
The mean decreases by ? when the outlier is removed.
Answers
Answer:
It is decreased by 3.25
Step-by-step explanation:
When you add all 8 numbers you'll get 58 then you divide them by 8 you will get 7.25 which is the mean. To find out what is the decrease we need to take out the 30 and add all the other numbers and we get 28. After that you divide 28 by 7 and you get 4. Subtract 4 from 7.25 and you get 3.25.
2+2+2+3+5+6+8+30=58
58/8=7.25
2+2+2+3+5+6+8=28
28/7 = 4
7.25-4=3.25
Find the approximate area of a circle with a diameter of 100 cm use 3.14 for pi
Answers
Answer:
7850
Step-by-step explanation:
3.14r^2
3.14(50)^2
3.14(2500)
=7850
Im trying to do IXL and I dont understand the way my teacher teaches (ironic right?)
Can you please help?
the points (1,k) and (0,4) fall on a line with a slope of -9. What is the value of k?
Answers
Answer:
Step-by-step explanation:
14y=84
there's 2 boxes in the bottom
Answers
Answer:
y = 6
Step-by-step explanation:
If 14y = 84, then
84
y = ------ = 6
14
(EASY POINTS) Answer num: 5 with a detailed explanation. :)
Answers
Answer:
There is no picture
Step-by-step explanation:
Help me PLEASEEEEEEEEEEEE :C
Answers
Answer:
im thinking number #A but it also d
Answer:
C. Negative correlation
Step-by-step explanation:
I hope this is correct,
Have a nice day!!