Answer:
49a^2-b^2
Step-by-step explanation:
(7a-b)(7a+b)
7 x 7^ Combine liked terms
a + a -b + b
49a^2-b^2
Answer:
Step-by-step explanation:
heres what you you do
1. do the stuff in the parantathes (nothing)
2. break parenthates ( now it should look like this 7a-b*7a+b)
3. add the same thing together (7a's cancel each other out)
4. now your left with (-b+b now they cancel each other out)
hope this helps, have a good day!
Consider this equation: -2x-4+5x=8 generate a plan to solve for this variable . Describe the steps that will be used.
Sample Response: The goal is to get x all alone. First combine like terms. Apply the addition property of equality to add 4 to both sides. Apply the division property of equality to divide both sides by 3. The result will be x = 4. Finally, check the solution by substituting 4 into the original equation.
Answer:
Sample Response: The goal is to get x all alone. First combine like terms. Apply the addition property of equality to add 4 to both sides. Apply the division property of equality to divide both sides by 3. The result will be x = 4. Finally, check the solution by substituting 4 into the original equation.
Step-by-step explanation:
-2.5(8-b)=-?
Please help I’m stopped
Answer:
-20+2.5b is the answer
Step-by-step explanation:
-2.5(8-b)
-2.5*8 plus 2.5*b
-20+2.5b
If vector u= (-4,8) and vector (5,-18), which vector can be added to 2u-4v to give the unit vector in the direction of the y-axis as the resultant vector?
A. w = (12, -87)
B. w = (28, -55)
C. w = (28, -87)
D. w = (12, -55)
Answer:
hey buddy im gona help you!
Step-by-step explanation:
Need answer ASAP
A book weighing 1.0 newton is lifted 2 meters. How much work was done?
(Calculating work and power)
Formulas: Work= force × distance
Power= work/time or power= (force × distance)/time
5(x-3) = 2(x+3) solve for x
Answer:
7
Step-by-step explanation:
5(x - 3) = 2(x + 3) Distribute
5x - 15 = 2x + 6
+ 15 + 15 Switch sides to the liked terms
5x = 2x + 6 + 15
-2x -2x Switch sides to the liked terms
5x - 2x = 6 + 15
3x = 21 Divide
3 3
x = 7
Answer:
x = 7
Step-by-step explanation:
Equation: 5(x-3) = 2(x+3)
Step 1: Simplify the equation.
5 (x − 3) = 2(x + 3)
(5)(x) + (5)(−3) = (2)(x) + (2)(3) Distribute
5x + −15 = 2x + 6
5x − 15 = 2x + 6
Step 2: Subtract 2x.
5x − 15 −2x = 2x + 6 −2x
3x − 15 = 6
Step 3: Add 15.
3x − 15 + 15 = 6 + 15
3x = 21
Step 4: Divide by 3.
[tex]\frac{3x}{3} = \frac{21}{3}[/tex]
Step 5: Divide 21 by 3.
The answer is x = 7.
Write the equation of a quadratic function whose graph has x-intercepts at x=3 and x=-4 and a y-intercept at 48.
Answer:
Step-by-step explanation:
okay i will answer but i dont see the question
HELP ME PLEASE How long ago did humans change from living as hunter-gatherers to living in settlements and practicing agriculture?
Point A is the incenter of triangle DEF. Point A is the incenter of triangle D E F. Lines are drawn from the points of the triangle to point A. Lines are drawn from point A to the sides of the triangle to form right angles and line segments A X, A Y, and A Z. Which must be true? Select three options
The points must be true for Point A which is the incenter of triangle DEF are 1> Point A is the center of the circle that passes through points X, Y, and Z. 2>Line segment A X is-congruent-to line segment A Y . 3> Point A is always inside triangle DEF .
What is incenter of triangle?
The incenter of a triangle is the point of intersection of all the three interior angle bisectors of the triangle. This point is equidistant from the sides of a triangle, as the central axis's junction point is the center point of the triangle's inscribed circle. The incenter of a triangle is also known as the center of a triangle's circle since the largest circle could fit inside a triangle. The circle that is inscribed in a triangle is called an incircle of a triangle.
According to the question
Point A is the incenter of triangle DEF .
Lines are drawn from point A to the sides of the triangle to form right angles and line segments A X, A Y, and A Z. (X,Y,Z are points on middle of sides )
Now,
According to the properties of incenter of the triangle
1.> The circle that is inscribed in a triangle is called an incircle of a triangle.
i.e
Point A is the center of the circle that passes through points X, Y, and Z.
2> The incenter of a triangle is equidistant from the sides of a triangle, as the central axis's junction point is the center point of the triangle's inscribed circle.
i.e
Line segment A X is-congruent-to line segment A Y .
3> A triangle's incenter always lies inside the triangle.
i.e
Point A is always inside triangle DEF .
Hence, The points must be true for Point A which is the incenter of triangle DEF are 1> Point A is the center of the circle that passes through points X, Y, and Z. 2>Line segment A X is-congruent-to line segment A Y . 3> Point A is always inside triangle DEF .
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Isaac and Shonda can rent a canoe for $12 per hour and a mountain bike for $9 per hour. Together, they have $138 to spend. Let c represent the number of hours a canoe is
rented and let m represent the number of hours a mountain bike is rented. Which inequality can Isaac and Shonda use if they decided to rent a canoe and two mountain bikes?
Answer:
12c + 9m ≤ 138
Step-by-step explanation:
Answer:b. 12c+9m less than or equal to 138
Step-by-step explanation:
A lacrosse player throws a ball upward from an initial height of 7 ft with an initial velocity of 70 feet per second. Write a function in the form h(t)=-16t^2+v0t+h0 to model this situation.
Answer:
Thats what i need help with plzzx help!!
Step-by-step explanation:
This table represents the number of ounces, u, a kitten grows after w, weeks.
When graphed, all of the points in the table lie on the same line.
What is the slope and y-intercept of the line?
slope=−23, y-intercept=−0.2
slope=23, y-intercept=−0.2
slope=−32, y-intercept = 3
slope=32, y-intercept = 3
Weeks, w Weight in ounces, u
0 3
3 7.5
6 12
9 16.5
According to the U.S. Geological Survey, there are over 300,000,000 cubic miles of water on the planet. How this number represented in scientific notation
0 3 x 108
0 3 x 10°
30 x 108
0 30 x 10
Answer:
3 x 10^8
Step-by-step explanation:
300,000,000 in scientific notation is 3 x 10^8 and because it’s 8 zeros
The number 300,000,000 represented in scientific notation will be 3 × 10⁸. Then the correct option is A.
What is Algebra?The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
PEMDAS rule means the Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to solve the equation in a proper and correct manner.
According to the U.S. Geological Survey, there are over 300,000,000 cubic miles of water on the planet.
Convert the integer number into scientific notation. Then the number can be written as,
300,000,000 = 3 × 10⁸
The number 300,000,000 represented in scientific notation will be 3 × 10⁸. Then the correct option is A.
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The roots of 3x^2+kx+12=0 are equal, find k.
Answer:
Step-by-step explanation:
3x^2+kx+12=0
k= -3x-12/x
Answer:
k = 12
Step-by-step explanation:
3(x² + kx + 2²) = 3(x² + ____x + 4) = 3(x² + 4x + 4) = 3x² + 12x + 12 ⇒ k = 12
The table shows the cost of ordering a certain number of pizzas. What is the
value of x if the cost is proportional to the number of pizzas ordered?
Answer:
y=px
so the answer would be $49.95
pretty sure
Step-by-step explanation:
To solve the equation x - 4 = 12,
A) Add 4 to both sides
B) subtract 4 from both sides.
C) add 4 to the left and subtract from the right.
D) subtract 12 from the right and add 4 to the left
Answer:
X = 16
Step-by-step explanation:
Yes, to solve this equation Add both side by 4solve for x. √(x+3)=2√(x-1)
Answer:
I got 7/3
Step-by-step explanation:
Hope this helps!!
Answer:
exact form: x=7/3
decimal form: x=2.3 (repeating)
mixed number: x= 2 1/3
Step-by-step explanation:
Pls help 2n+8>12 ............................................................
Given:
The inequality is
[tex]2n+8>12[/tex]
To find:
The solution of the given inequality.
Solution:
We have,
[tex]2n+8>12[/tex]
Subtract 8 from both sides.
[tex]2n+8-8>12-8[/tex]
[tex]2n>4[/tex]
Divide both sides by 2.
[tex]\dfrac{2n}{2}>\dfrac{4}{2}[/tex]
[tex]n>2[/tex]
It means, the value of n is greater than 2.
Therefore, the solution of given inequality is n > 2.
The length of a room is 2 1/2 feet more than its width. If the perimeter of the room is 80 feet, find its width and length?
Answer:
The width is 20.625 and the length is 19.375
Step-by-step explanation:
Let 2 1/2 + w = length
Let w = width
Equation:
2 1/2 + w + w = 80 Combine liked terms
2 1/2 + 2w = 80
-2 1/2 -2 1/2 Subtract 2 1/2 from both sides
2w = 77.5
÷ 2 ÷ 2 Divide 2 from both sides
w = 41.25
Length:
2 1/2 + 41.25 = 165/4 or 38.75
Width:
41.25
41.25/2 = 20.625
38.75/2 = 19.375
Please help this question I need all of them
How does place value
help me subtract decimals?
Place Value helps you subtract decimals because without it it would be a mess. Everything has to be in order if not you get the wrong answer
Can ya help me
PLEASE EXPLAIN
Answer: D
Step-by-step explanation:
The point in the grid if you divide by 2 will give you the prime points. Also it flips over the y axis.
The elevator of a building is currently 10 feet above ground level on the first floor. The building's elevator rises at a rate of 5 feet per second. You enter the elevator on the first floor. Let t, represent the number of seconds you are in the elevator and h(t) represent the height of the elevator (in feet). Write an equation for h(t) b. What will your height be in 12 seconds? c. What does h(5) = 35 represent?
Answer:
[tex]h(t) = 10 + 5t[/tex]
70 feet
Your height in 5 seconds is 35 feet
Step-by-step explanation:
From the question, we understand that:
[tex]Initial\ Height = 10[/tex]
[tex]Rate = 5[/tex] per second
Solving (a): Equation for h(t)
This implies that the height at t seconds and is calculated as thus:
[tex]h(t) = Initial\ Height + Rate * t[/tex]
Where t represents seconds
Substitute values for Initial Height and Rate
[tex]h(t) = 10 + 5* t[/tex]
[tex]h(t) = 10 + 5t[/tex]
Solving (b): Height in 12 seconds
This implies that:
[tex]t = 12[/tex]
Substitute 12 for t in [tex]h(t) = 10 + 5t[/tex]
[tex]h(12) = 10 + 5 * 12[/tex]
[tex]h(12) = 10 + 60[/tex]
[tex]h(12) = 70[/tex]
Hence, your height will be 70 feet
Solving (c): h(5) = 35 means?
Using the illustration in (b) above;
This means that your height in 5 seconds is 35 feet
Rachel is a stunt driver. One time, during a gig where she escaped from a building about to explode(!), she drove
to get to the safe zone at 24 meters per second. After 4 seconds of driving, she was 70 meters away from the
safe zone.
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Step-by-step explanation:
142meters
There are 25 trees on the Jackson’s property. Twenty percent of the trees are oak trees. Which equation can be used to find the number of oak trees on the property? StartFraction 25 divided by 1 Over 20 divided by 1 EndFraction = StartFraction 25 Over 20 EndFraction StartFraction 100 times 5 Over 20 times 5 EndFraction = StartFraction 500 Over 100 EndFraction StartFraction 20 times 4 Over 25 times 4 EndFraction = StartFraction 80 Over 100 EndFraction StartFraction 20 divided by 4 Over 100 divided by 4 EndFraction = StartFraction 5 Over 25 EndFraction
Answer:
All you have to do is find 20% of 25
Remember that you have to change the percent to decimal
20% = 0.2
0.2 × 25 = 5
The equation that should be used to find the number of oak trees on the property is 20% of 25.
Given that,
There are 25 trees on the Jackson’s property. Twenty percent of the trees are oak trees.Based on the above information, the calculation is as follows:
= 20% of 25
= 5
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Chandler tells Aubrey that the decimal value of − 1 17is not a repeating decimal. Should Aubrey believe him? Explain.
Answer:yes no maybe soooo
Step-by-step explanation:
Simplify 2(a + 3b) + 3( 4a + b)
2(a+3b)+3(4a+b)
Distribute 2 through the parentheses
2a+6b+3(4a+b)
Distribute 3 through the parentheses
2a+6b+12a+3b
Collect like terms
14a+6b+3b
Collect like terms
14a+9b
Answer :14a+9b
PLEASE MARK ME AS BRAINLIEST
The correct answer for the simplification of [tex]2(a+3b) + 3(4a+b)[/tex] is [tex]14a+9b[/tex].
Given expression:
[tex]2(a+3b) + 3(4a+b)[/tex].
To simplify the expression [tex]2(a+3b) + 3(4a+b)[/tex]:
Apply distributive property:
Distribute coefficients outside parentheses:
[tex]2(a) + 2(3b) + 3(4a) + 3(b)[/tex].
simplify, terms inside the parentheses:
[tex]2a + 6b + 12a +3b[/tex].
Combine like terms:
[tex](2a+12a) + (6b+3b)[/tex]
= [tex]14a+9b[/tex]
The simplified expression is [tex]14a+9b[/tex]
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Evaluate the expression 2(3x-2y) when x=5 and y=2
Answer:
22
Step-by-step explanation:
2(3(5)-2(2)
2(15-4)
2(11)
2*11=22
What divisor is used to change 10:30 to its simplest form of 1:3
A-2
B-5
C-10
D - 6
Answer:
C 10
Step-by-step explanation:
Divide both 10 and 30 by 10 to get 1 and 3.
Answer: C 10
Sketch a 9 red counters and 4 yellow counters.How many zero pairs can you make?How many counters do you have after you remove the zero pairs? What do they represent
Answer:
36.75 and 1/6 ( 6 accounts equally distributed )
Step-by-step explanation:
Number of Red counters to be sketched = 9
Number of Yellow counters = 4
The number of Zero pairs that can be made = 36.75
When you remove the Zero pairs the number of counters you would have = 6 accounts ie. 1/6
If the shirts $42 and it's on sale for $15 how much is a shirt now
Answer:
I think its 27
Step-by-step explanation:
If the vurrent cost is 15 then it took 27 dollars off the original amount
PLEAZZZZZZZZZZZ HELPPPPPPP will mark brainlist
The table compares the main course and the side dish each person in Hiroki's family ordered at a restaurant.
Can the side dish be represented as a function of the main course?
Main course Side dish
Pasta primavera Salad
Fish Rice
Burger Potato chips
Fish Rice
Veggie burger Salad
Burger Potato chips
Pasta primavera Salad
Burrito Rice
Answer Choices
Yes (A)
or No (B)
Answer:
I know I'm late but the answer is yes!
Step-by-step explanation:
I got it correct on Khan academy:)
Answer:
Yes
Step-by-step explanation:
Khan academy:
