Simplify the following
1.) 5xy - xy + 2x - 13x + 10xy - 8x
2.) -6c - (-6c) - (+6c)
3.) 0x -22x - 4(2x)
The sum of two numbers is 75. Their difference is 25. What are the two numbers?
Show all work
Answer:
50 and 25
Step-by-step explanation:
y+x=75
y-x=25
y+y=yx and x-x eliminate itself
so now we have the operation 2y= 50, I got the 50 from substrating 25 from 75
now found the value of y, 50/2=25
so y=25
now plug the number in
25+x=75
75-25=50
so x= 50
Jen can jump rope 80 times in 60 seconds. If she jumps at a constant ratio of seconds to jumps, how many jumps can she make in 15 seconds?
Answer:
5 jumps per 15 seconds
Step-by-step explanation:
60/15 = 4
80/15 = 5
Have an amazing day!
Please mark brainliest!
Find the area of the trapezoid using the formula using the A=1/2h(b1+b2)
Answer:
9
Step-by-step explanation:
1/2 bh (b1+b2)Count all the squares for the base (6 squares)Half it bc 1/2bh, which is not 3(h)Now count the amount of squares to the top of it from the bottom (3 as well)Now the problem is 3(3) which is 9.So, the answer is 9Hope this helps! Comment on it if you need more explanation!:)
Answer: 9
Step-by-step explanation: beacuse it is
Figure A is a scale image of Figure B
Answer:
x = 30
Step-by-step explanation:
Put in proportions [tex]\frac{x}{45}[/tex] = [tex]\frac{18}{27}[/tex]
Cross multiply and get 27x = 45 x 18
OR...
27x = 810.
THEN...
divide by 27 on both sides to get 30
x = 30
HELP PLEASE ILL GIVE BRAINLIST 8th grade ALGEBRA I INSERTED A PHOTO
Answer:
No
Step-by-step explanation:
Solve it yourself, or ask your mom. They might help. So yeah um bye
What is the value of X
I'll give brainliest to the first one correct
Answer:
x=28.3
Step-by-step explanation:
I REALLY NEED UR HELP PLEASE!
I need help with 4 and 5
Answer:
4) It does not represent a function because multiple outputs are equal to an input.
(i dont know for b sorry)
5) i think that means ummm:
(-6, -12)
(-3, 6)
(0, 0)
(3, -6)
(6, -12)
Step-by-step explanation:
because thats what i think. i tried my best here hope this helps!
8. The speed of the current in a river is 6 mph. A ferry operator who works that part of the river is looking to buy a new boat for his business. Every day, his route takes him 22.5 miles against the current and back to his dock, and he needs to make this trip in a total of 9 hours. He has a boat in mind, but he can only test it on a lake where there is no current. How fast must the boat go on the lake in order for it to serve the ferry operator’s needs? *
Answer:
x=9
Step-by-step explanation:
Rehman invests his summer earnings of
$3050. He invests part of the money at
8%/year, and the rest at 7.5%/year. After
1 year, these investments earn $242 in
simple interest. How much did he invest
at each rate?
Answer:
Step-by-step explanation:
let Rehman invests in 8%=$x
simple interest=x*0.08*1=0.08 x
investment in 7.5%=$(3050-x)
simple interest=(3050-x)*0.075*1=228.75-0.075x
total interest=0.080 x+228.75-0.075 x=0.005x+228,75
0.005x+228.75=242
0.005 x=242-228.75
0.005 x=13.25
x=13.25 /0.005=2650
invested at 8%=$2650
invested at 7.5 %=3050-2650=400
There are 6 lines. The 1st line has 9 people, 2nd line 11 people & 3rd line 13 people.
how many people are in the 6th line? How many people are in the lines in total?
use arithmetic series to find how many people in 6th line
use finite series to find how many people in total
Answer:
19!!!
Step-by-step explanation:
4th row-15 people
5th - 17
6th - 19
{the series goes in form of odd numbers from 9 adding two as row number increases}
Answer:
19
Step-by-step explanation:
(4) 15 people
(5) 17 people
(6) 19 people
add 2 in each line
Find the area of a circle with radius, r = 5.5m.
Give your answer rounded to 2 DP.
m?
Answer:
Step-by-step explanation: The area of a circle can be found with the equation A=(pi)*r^2. Use the equation to find the answer:
A=(pi)*5.5^2 (or A=3.14*5.5^2)
A=94.99 or 95.03 in exact pi
Have a nice day! :)
A pail contains a certain amount of water. After Peter used it to fill a 1.5 liter can, a 750 milliliter bottle, and a 2 liter 250 milliliter tin, he realized that he had a liter of water left in a pail. How much water was in the pail at first? explain and show your work.
Answer:
After Peter used it to fill a 1.5 liter can, a 750 milliliter bottle, and a 2 liter 250 milliliter tin, he realized that he had a liter of water ...
Step-by-step explanation:
You have $12 to spend on lip balm and hand sanitizer. The equation
1.5x + 2.5y = 12 represents this situation, where x is tubes of lip
balm and y is bottles of hand sanitizer.
How many tubes of lip balm can you buy when you do not buy
any bottles of hand sanitizer?
Answer:
8 Tubes
Step-by-step explanation:
12/1.5=8
please help please ill give brainliest best answer
The first step is to find the area of the figure amd then multiply it by the weight of per metre...
Step 1Area of figure⤵️[tex] \sf \: area = length \times width[/tex]
Length = 60 cm = 0.6 metreWidth = 200 cm = 2 metre[tex] \bf \: area = 0.6 \times 2[/tex]
[tex] \bf \: area = 1.2 \: {m}^{2} [/tex]
Now,Weight of 1 metre² = 0.9 kgSo, The weight of 1.2 m² is;[tex] \tt \: 1.2 \:{m}^{2} = 1.2 \: kg[/tex]
The framework is made up of 5 rods, So the weight will be
1.2 × 5 = 6kg➪ Thus, The weight of theframework is 6 kilograms...~
what is 1*727/3+6*2-5=? pIz help!!!
Answer:
its 249 1/3
Step-by-step explanation:
=727/3 + 6 x 2 - 5
=727/3 + 12 - 5
= 748/3
= 249 1/3
yea someone just help me again.
what is the value of x?
Answer:
45??
Step-by-step explanation:
Answer:
x = 15√2
Step-by-step explanation:
Since the two angles on the triangle are the same, we can conclude that x is equal to the side that is adjacent to it too ( not the hypotenuse).
We will have x = a to use this pythagorean theorem as follows.
We will get the equation,
a = b
where
a^2 + b^2 = c^2
so,
a^2 + a^2 = c^2
2a^2 = 30^2
2a^2 / 2 = 900 / 2
√a^2 = √450
a = √450
a = 15√2
Your welcome, comment below if you have any questions! If you could mark this as brainliest I would appreciate it :D
What is the perimeter of the basement floor? _____ feet
Answer:
106
Step-by-step explanation:
You just have to add all the sides together.
9+31+22+13+18+(31-18)
=106
If you roll a number cube, what is the probability that you will roll an even number?
Answer:
[tex]\frac{1}{2}[/tex]
Step-by-step explanation:
Probability is calculated as
P = [tex]\frac{favourable outcome}{number of outcomes}[/tex]
A favourable outcome is an even number , that is 2, 4, 6 , a total of 3
number of outcomes = 6 , that is 1, 2, 3, 4, 5, 6
Then
P( even number) = [tex]\frac{3}{6}[/tex] = [tex]\frac{1}{2}[/tex]
Consider a tire with a radius of 9 inches that is rolled 150 revolutions and travels
approximately 8,482 inches.
The tire with radius of 6 inches when rolled 150 revolutions travels approximately 5654 inches.
Equation
An equation is an expression that shows the relationship between two or more numbers and variables.
A tire with a radius of 9 inches that is rolled 150 revolutions and travels approximately 8,482 inches.
For a tire with radius r and that is rolled 150 revolutions and travels approximately 5654 inches:
9/8482 = r/5654
r = 6 inches
The tire with radius of 6 inches when rolled 150 revolutions travels approximately 5654 inches.
Find out more on Equation at: https://brainly.com/question/2972832
If the total surface area of a cube is 96cm², find its volume
======================================================
Explanation:
Let's find the side length of the cube based on the given surface area.
SA = 6s^2
96 = 6s^2
6s^2 = 96
s^2 = 96/6
s^2 = 16
s = sqrt(16)
s = 4
The cube has side length 4 cm.
Now calculate the total volume.
V = s^3
V = 4^3
V = 4*4*4
V = 64 cubic cm.
-------------------
Extra info:
The unit "cubic cm" can be abbreviated to "cc". So whenever you hear something from a medical tv show "get me 10 cc's of XYZ", that's what they're referring to. Of course the "10" might be some other realistic value, it's just an example.
1 cc = 1 milliliter
Max has two cats. Rex and Roman. If Rex weighs 11 7/18 pounds and Roman weighs 11.329 pounds, which cat weighs the most?
Answer: Rex weighs more.
Step-by-step explanation:
You have to change both of the numbers into the same form. I did decimal form.
Rex - 11 7/18 = 11.389 (rounded to the hundredths)
Roman - 11.329
Rex is bigger.
Hope this helps!
Last week, a chocolate shop sold 5 ounces of white chocolate. It sold 1 9/10 times as much milk chocolate as white chocolate. How many ounces of milk chocolate did the shop sell?
Write your answer as a fraction or as a whole or mixed number.
Answer:
9.5
Step-by-step explanation:
4 x 5-10 - 2 (1-2) + 5=
Answer:
[tex]17[/tex]
Step-by-step explanation:
[tex]4\cdot \:5-10-2\left(1-2\right)+5[/tex]
[tex]\mathrm{Follow\:the\:PEMDAS\:order\:of\:operations}[/tex]
[tex]=4\cdot \:5-10-2\left(-1\right)+5[/tex]
[tex]=20-10-2\left(-1\right)+5[/tex]
[tex]=20-10-\left(-2\right)+5[/tex]
[tex]20-10=10[/tex]
[tex]=10-\left(-2\right)+5[/tex]
[tex]-\left(-2\right)=+2[/tex]
[tex]=10+2+5[/tex]
[tex]10+2=12[/tex]
[tex]=12+5[/tex]
[tex]12+5=17[/tex]
[tex]=17[/tex]
what is the surface area of the Triangular prism? Pls answer ASAP I WILL GIVE BRAINLIEAST.
Answer:
170cm²
Step-by-step explanation:
so the middle rectangle part first
15x10=150
then there's triangles so i'm gonna skip the divided by 2 part.
5x4=20
150+20=170
Solution:
Note that:
Surface area = 2(Area of triangle) + 3(Area of rectangle)Finding the area of triangle:
Area of triangle = 1/2 x 4 x 5=> Area of triangle = 1/2 x 20Area of triangle = 10 cm²Finding the area of rectangle:
Area of rectangle = 5 x 10=> Area of rectangle = 50 cm²Using the formula of surface area:
Surface area = 2(Area of triangle) + 3(Area of rectangle)=> Surface area = 2(10) + 3(50)=> Surface area = 20 + 150=> Surface area = 170 cm²what is 0.09 as a fraction
Answer:
9100
Step-by-step explanation:
The second place after the decimal is called the "hundredths place". The question above asks for 0.09 . This would be 9 hundredths, or as a fraction 9100 .
I need help please! I will mark you as a brainlest and give out 30 points!
PLEASE HELP WILL MARK BRAINLIEST The coordinates (5, 2) and (-6, 2) are vertices of a hexagon. Explain how to find the length of the segment formed by these endpoints. How long is the segment? PLEASE MAKE THE ANSWER SCHOOL APPROPRIATE
Answer:
Let
Point 1 ----------> (5, 2)
Point 2 ----------> (–6, 2)
we know that
the distance between two points it is calculated with the formula
d=√[(y2-y1)²+(x2-x1)²]
then
d=√[(2-2)²+(-6-5)²]
d=√[(0)²+(-11)²]
d=√[121]
d=√121-----------> d=11 units
the answer is 11 units,
Also, The segment is horizontal because the y-coordinates are the same. To find the distance, you can count the spaces between the points. The segment is 11 units long.
The 225 students who passed all of their classes on the last report card will attend a one-hour Friday Fun-Day sponsored by the Parent-Teacher
Organization (PTO). A variety of activities and snacks will be provided and students will receive one prize. A random survey of 50 students was
conducted to determine how many of each prize should be purchased for the Friday Fun-Day. The results of the survey are shown.
• 28 students want a slime kit.
• 12 students want a basketball.
• 6 students want a jewelry bead kit.
• 4 students want an artist sketch pad and pencil set.
Problem
Based on the survey results, which of these is NOT a valid prediction of the prizes wanted by the 225 students?
A There are 126 students who want a slime kit.
B There are 36 fewer students that want an artist sketch pad and pencil set than a basketball.
C There are 71 students who want either a basketball or a jewelry bead kit.
D There are 27 more students who want a slime kit than all the other prizes combined.
Answer:
C. is incorrect.
Step-by-step explanation:
Calculate the percentages for each prize desired by the 50 students responding in the sample survey. See the attached image for this calculation. Multiply these percentages times the total student body of 225 students to determine the likely selection for each prize (on the attachment).
A. is correct (126 students)
B. is correct
C. is incorrect. The total is (54 + 27) = 83
D. is true
