Factorise the following expressions :
Answer:
36x²+96xy+64y²
(6x)²+2×6x×8y+(8y)²
it is in formula of (x+y)²
:.(6x+8y)² or (6x+8y)(6x+8y)
How do I tell my mom I have depression so she will stop hurting me with hurtful words-
Answer:
Just tell her and if she says you dont tell her that you do. If she continues to hurt you then probaly call the police.
Step-by-step explanation:
Answer:
try to find someone close to you like a relative or best freind and tell them about her. After that try to confront her about it, and bring that close one with you to make you feel more strong. if she says you dont
have it and contiues hurting you tell the police.
of the questions on his math test, Shane answered 42 correctly and 18 incorrectly what percent of the total questions did Shane answer correctly?
Answer:
70%
Step-by-step explanation:
Okay so to find out the percent that Shane got correct you first have to find out the number of questions in the test by adding 42 and 18 together. 42 + 18 equals 60. So he got 42/60 questions on his quiz correct. Now we have to turn 42/60 into a decimal by dividing 42 by 60, 42 divided by 60 equals 0.7 Now to turn a decimal into a percent you have to move the decimal 2x to the right. So if we move the decimal in "0.7" twice to the right we get our total percentage of 70. So, in conclusion, Shane got 70% of the answers on his quiz correct.
Eight times the reciprocal of a number equals 4 times the reciprocal of 9 .
Answer:
2/9
Step-by-step explanation:
Call the unknown number n
Therefore, we can express your question in the following manner
8 * n = 4 * 9
n = 36/8
But we know that n is a reciprocal of a number, so we need to flip the numerator and denomiator in n
Answer: 8/36 = 2/9
What's the area of a circle with diameter 18 units? Question 8 options: A) 9π units2 B) 81π units2 C) π units2 D) 18π units2
Answer:
B) 81π units²
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightGeometry
Radius of a Circle Formula: r = d/2
r is radiusd is diameterArea of a Circle Formula: A = πr²
Step-by-step explanation:
Step 1: Define
Diameter d = 18 units
Step 2: Manipulate Variables
Radius r = 18 units/2 = 9 units
Step 3: Find Area
Substitute in r [Area of a Circle Formula]: A = π(9 units)²[Area] Evaluate exponents: A = π(81 units²)[Area] Multiply: A = 81π units²Will give brainlst!!
Answer:
2.5, 21/8, ³√25, π, √19
Step-by-step explanation:
The following data were obtained from the question:
³√25, π, 21/8, 2.5, √19
Next, we shall express each data as a decimal number where necessary. This can be obtained as follow:
³√25 = 2.9
π = 3.14
21/8 = 2.6
2.5 = 2.5
√19 = 4.4
Finally, we shall order the expression from least to greatest. This is illustrated below:
2.5, 21/8, ³√25, π, √19
cual es valor absoluto de -7
Answer: -7
Step-by-step explanation:
−7
=−7
What characteristic is true for all relations that are functions
Answer: First option, the graph of the relation passes the vertical line test.
Step-by-step explanation:
A function is a relation that maps elements from a set (the domain, the x-values) into elements from another set (the range, the y-values)
Where the only condition we have is that each element from the domain can be mapped into only one element from the range.
So if we draw a vertical line at any point of the graph, it can intersect the graph of the function a maximum of one time. (this is known as the vertical line test)
Then the correct option is that the graph of the relation passes the vertical line test.
Work out the perimeter of a semicircle with radius 3cm.
give your answer in terms of pi
Answer:
(6 + 6π) cm
Step-by-step explanation:
2π(3) / 2 + 3x2
= (6 + 6π) cm
On Monday, 375 students went on a trip to the zoo. All 9 buses were filled and 6 students had to travel in cars. how many students were on each bus?
Answer:
41
Step-by-step explanation:
(375-6)÷9=369÷9=41
Answer: 41 students were on each bus.
Step-by-step explanation: Subtract the 6 students who traveled in cars from the total students (375 - 6 = 369). Then, divide the 369 students by the 9 buses and get your answer: 41 students per bus.
NEED HELP PLEASE HELP (Please indicate answer for which part) :) Thank you
A box contained black beads and white beads. At first, the number of black beads was 1/3 the number of white beads. After 1/4 of the black beads and 3/8 of the white beads were used, 63 beads were left.
(a) What fraction of the beads were used? Leave your answer in the simplest form.
(b) How many beads were there in the box at first?
Answer:
A
Step-by-step explanation:
A
The area of a rectangle is 27 m”, and the length of the rectangle is 3 m less than twice the width. Find the dimensions of the rectangle.
Answer:
[tex]L = 6[/tex] --- Length
[tex]W = 4.5[/tex] --- Width
Step-by-step explanation:
Given
Let: [tex]L = Length; W = Width[/tex]
[tex]Area = 27m^2[/tex]
[tex]L = 2W- 3m[/tex]
Required
Find the dimensions of the rectangle
Area (A) is calculated as:
[tex]A = L * W[/tex]
This gives:
[tex]27 = (2W - 3) * W[/tex]
Open bracket
[tex]27 = 2W^2 - 3W[/tex]
Express as a quadratic function
[tex]2W^2 - 3W - 27 = 0[/tex]
Expand
[tex]2W^2 + 6W - 9W - 27 = 0[/tex]
Factorize:
[tex]2W(W + 3) - 9(W + 3) = 0[/tex]
[tex](2W - 9)(W + 3) = 0[/tex]
This gives:
[tex]2W - 9 = 0\ or\ W + 3 = 0[/tex]
[tex]2W = 9 \ or\ W = -3[/tex]
Width can not be negative.
So:
[tex]2W = 9[/tex]
[tex]W = 4.5[/tex]
Recall that:
[tex]L = 2W- 3m[/tex]
[tex]L = 2 * 4.5 - 3[/tex]
[tex]L = 6[/tex]
The length of one side of a triangle is 3 feet less than twice the length of its second side. The third side is 2/3 of the sum of the lengths of the first 3 sides. Find the length of all three sides if the perimeter is 6.5
Answer:
side 1: 1.6
side 2: 2.3
side 3: 2.6
Step-by-step explanation:
side 1: 2x - 3
side 2: x
side 3: 2/3(x + 2x - 3) = 2x-2
(2x - 3) + x + (2x - 2) = 6.5
5x - 5 = 6.5
5x = 11.5
x = 2.3
side 1: 1.6
side 2: 2.3
side 3: 2.6
Question
Use the discriminant to determine the number of real solutions to the quadratic equation.
-2a^2 – 11a – 10 = 0
Top
Previous
Solve the compound inequality. Then graph the solution set.
s-2 <-10 or-3s < 6
Answer:
{s | s < -8 or s >= -2}
Step-by-step explanation:
In order to solve an inequality we simply have to isolate the variable by applying the opposite operations on each side.
s - 2 < -10 ... add 2 to both sides
s < -8
-3s <= 6 ... divide both sides by -3, since we are dividing a negative number you must flip the sign
x >= -2
Therefore the final answer would be {s | s < -8 or s >= -2} which is the 3rd graphed multiple choice answer as seen attached to this answer.
A stone is thrown upward, its height h meters after t seconds is given by this formular h=30t-5t². Find t when it is at a height of 25m, why are there two answers, what do they mean?
Answer:
the answer is
T¹=5s
T²=1s
Am not sure about why there's two times , although perhaps the two times indicate the starting time and the other indicate the time when the stone hits 25m above the ground
Step-by-step explanation:
the solving steps are in the picture.
Find the area of the triangle.
Answer:
to find the area, multiply the base times the height and divide it by two. we do not have the picture of the triangle, so we cannot answer this but here is the formula
(BxH)/2 = A
A light bulb consumes 5850 watt-hours in 3 days and 6 hours. How many watt-hours does it consume per day?
watt-hours per day
Х
5
?
Answer:
Step-by-step explanation:
Three days + 6 hours has 24*3 + 6 = 78 hours
You need only set up a proportion
5850 / 78 = x / 24 Multiply by 24
24 * 5850 / 68 = x
1800 watt hours / day
I was training the cross country team. Every week I expected the students to run 12 3/4 miles every week. If the kids ran
for 5 days that week, how many miles would they need to run each day to meet my expectations ?
Answer:
x = 2.55 miles per day
Step-by-step explanation:
In English: 5 days * 'x' miles per day = 12 & 3/4 miles total
In algebra: 5x = 12.75
x = 12.75 ÷ 5
x = 2.55 miles per day
An arrow is shot up in the air from a height of 3 feet. The height of the arrow, in feet,can be modeled with the function h= -2t^2+12t+3where his the height in feet and is the time in seconds.Enter the average rate of change, in feet per second, from 1 second to 4 seconds
Answer:
The average rate of change is two feet per second.
Step-by-step explanation:
The height of an arrow shot up into the air from a height of three feet is given by the function:
[tex]h(t)=-2t^2+12t+3[/tex]
And we want to find its average rate of change from one second the four seconds.
The average rate of change is synonymous with the slope. Therefore, we can evaluate the height of the arrow after the first and fourth seconds, and find the slope between them.
After the first second, the height of the arrow is:
[tex]h(1)=-2(1)^2+12(1)+3=13[/tex]
And after the fourth second, the height of the arrow is:
[tex]h(4)=-2(4)^2+12(4)+3=19[/tex]
This yields two points: (1, 13) and (4, 19).
The slope between them is:
[tex]\displaystyle m=\frac{19-13}{4-1}=\frac{6}{3}=2[/tex]
Therefore, the average rate of change from one second to four seconds is two feet per second.
Divide simplify your answer,12/1/4 divide 1/8
Answer:
24
Step-by-step explanation:
Find x Question is attached:
PLease I need the answer fast!!!
Answer:
Step-by-step explanation:
(-3)ˣ⁻² = -243
(-3)ˣ⁻² = (-3)⁵
x-2 = 5
x = 7
Can someone help out with this question
A $329.50 gaming system goes on sale for 60% off. You have a coupon for an additional 40%
off the sale price. Does this mean you will get the gaming system for free? Why or why not?
Answer:
no
Step-by-step explanation:
no because if you multiply $329.50 by .6 you get $197.7, then with the additional 40% (.4) you end up having to pay $79.08
Question 5 Multiple Choice Worth 1 points)
(05.02 MC)
Find the measure of angle x in the figure below:
A - 35
B - 47
C - 51
D - 62
Answer:
C because to get y u do 180 - 57+61 than for x u do 180 - 62+67
Answer:
x=51
Step-by-step explanation:
y+57+61=180 linear pair
y=180-118=62
in triangle
x+y+67=180sum of interior angle of the triangle is 180
x+62+67=180
x=180-129=51
I WILL MARK BRAINIEST AND GIVE 100 POINTS IF ANSWERED ASAP.
What is the measure of TYV?
Answer:
the answer is 116 jdsjosbdo
Todd had 6 gallons of gasoline in his motorbike. After driving 150 miles, he had 3 gallons left. Compute the slope, or rate of change in the amount of gasoline.
The rate of change is __ miles per gallon.
Answer:
50 miles per gallon, 50/1
Step-by-step explanation:
Two angles in a triangle have measures of 13° and 65°.
What is the measure of the third angle?
A.
78°
B.
143°
C.
102°
D.
52°
Answer:A:78
Step-by-step explanation:
Applying the definition of sum of triangle, the third angle measure is: C. 102°
Recall:
Sum of a triangle/sum of all interior angles in a triangle = 180 degreesThus, given that a triangle has two angles that measures, 13 degrees and 65 degrees respectively, therefore, the third angle of the triangle can be calculated as follows:
Third angle = 180 - (13 = 65) (Sum of Triangle).
Third angle = 180 - 78
Third angle = 102 degrees.
Therefore, applying the definition of sum of triangle, the third angle measure is: C. 102°
Learn more here:
https://brainly.com/question/18533481
Amanda plans to have 20 friends over to Watch NCAA Basketball on Saturday. She plans to serve pizza, wings, soda, and brownies. Each person eats 3 pieces of pizza, 16 ounces of soda, and 1 brownie. Each pizza has 10 slices. She buys 64 oz. bottles of soda. She bakes brownies in 8” X 12” pan and cuts them into 2” X 3” pieces.
How many pizzas does she need?
How many soda bottles does she need?
How many pans of brownies does she need?
If bottles of soda cost $1.69, pizzas cost $12.99, and brownie mix cost $2.39, write an expression to calculate the cost of Amanda’s NCAA tournament party.
All of the work:
How to solve the amount of pizza she needs:
20 x 3 = 60
60 divided by 10 = 6
How to solve the amount of soda bottled needed:
20 x 16 = 320
320 divided by 64 = 5
How to solve the number of pans she needs:
20(2 x 3) = 40 x 60
40 x 60 divided by 8 x 12 = 5
THE COST CAN BE FOUND BY MULTIPLYING THE NUMBER OF THE ITEM NEEDED AND THE PRICE FOR EACH OF THE ITEM.Number of pizza she needs:6 pizza, costs $77.94
Number of soda bottles she needs:5 bottles, costs $8.45
Number of pans she needs:5 pans, costs $11.95
Add 77.94, 8.45, and 11.95 and get 98.34
80% of the astronomy club members own a telescope. If 20 students own a telescope, how many students are in the astronomy club in all?
help