Answer:
15r²-14r-8
Step-by-step explanation:
Use FOIL for this:
(5r+2)(3r-4)
First: 5r × 3r = 15r²
Outer: 5r × (-4) = -20r
Inner: 2 × 3r = 6r
Last: 2 × (-4) = -8
15r²-20r+6r-8=
15r²-14r-8
please help ASAP for brainliest
What is the product of −2 2/5 and −3 5/6?
A. -9 1/5
B. -6 7/30
C. 6 1/3
D. 9 1/5
Answer:
i think its D but not really sure
Step-by-step explanation:
Triangle triangle A^ prime B^ prime C^ prime is the image of triangle ABC under a dilation What is the scale factor of the dilation
Answer:
2
Step-by-step explanation:
The scale factor of the dilation of triangle ABC into the triangle A^ prime B^ prime C^ prime is 2.
What is scale factor?Scale factor is the factor which is used to enlarge or smaller the original figure. Scale factor is the ratio of representation measurement of the figure to the original figures.
Triangle A^ prime B^ prime C^ prime is the image of triangle ABC under a dilation.
The height of the triangle ABC is 5 units (blocks) and the height of the dilated triangle A'B'C' is 10 units. Thus, the scale factor is,
[tex]k=\dfrac{10}{5}\\k=2[/tex]
Hence, the scale factor of the dilation of triangle ABC into the triangle A^ prime B^ prime C^ prime is 2.
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10 Which of the following represents the
domain of the function F(x) = 2x + 15?
3
Answer:
Domain is x ∈ R
Step-by-step explanation:
There weren't any options given, but for f(x) = 2x + 15, the domain is x ∈ R.
This is because the graph is a linear function, which exists for all values of x. You can express this in lots of different ways, but R (all reals) is the conventional way to do it.
In case you don't know what a domain is: it is a set of numbers that the x-values of an equation can fit into.
Example:
f(x) = [tex]x^{2}[/tex] -> x ∈ R
This is because, if you draw a quadratic graph, you can see that the values of x are neverending.
Hope this helped : )
match the width with the go given area.
Hello!
Answer:[tex]\boxed{ \bf 1.~l~=~9.25~cm;~A~=~55.5~cm^2~matches~with~the~last~option~w~=~6~cm.}[/tex]
[tex]\boxed{ \bf 2.~l~=~7.5~cm;~A~=~48.75~cm^2~matches~with~the~second~option~w~=~6.5~cm.}[/tex]
[tex]\boxed{ \bf 3.~l~=~5~cm;~A~=~44~cm^2~matches~with~the~third~option~w~=~8.8~cm.}[/tex]
[tex]\boxed{ \bf 4.~l~=~5~cm;~A~=~31.25~cm^2~matches~with~the~first~option~w~=~6.25~cm.}[/tex]
__________________________________Explanation:We already know that the formula for area of a rectangle is A = l × w.
Notice how the width and the length are being multiplied to find the area.
Well, to find the width, we must do the opposite of multiplication, which is division.
Since we already have the length, all we have to do is divide the area by the length for each of the questions.
1:
A = l × w
55.5 = 9.25 × w
[tex]\frac{55.5}{9.25}[/tex] = 6
2:
A = l × w
48.75 = 7.5 × w
[tex]\frac{48.75}{7.5}[/tex] = 6.5
3:
A = l × w
44 = 5 × w
[tex]\frac{44}{5}[/tex] = 8.8
4:
A = l × w
31.25 = 5 × w
[tex]\frac{31.25}{5}[/tex] = 6.25
Please help!!! I have no idea why, but I can’t solve these problems!!!!
Identify the LCD of the rational expressions in the equations
2/x+1 + x/x+4 = 1/2
4/x+9 + 3x/2x-1 = 10/3
I’d love it if anyone could answer both equations, but anything helps really!!!
Triangle ABC has two known angles. Angle A measures 55 degrees. Angle B measures 30 degrees. What is the measure of angle C? Show your work and explain how to solve.
Answer:
According to triangle theorems, we know that the interior angles of a triangle equals 180 degrees. Since we know that angle A and angle B are 55 and 30 degrees, all we need to do is add them up and subtract it from 180 degrees to find out the measure of angle C.
55 + 30 = 85 degrees
180 degrees - 85 degrees = 95 degrees (this is the measure for angle C)
The m∠C in the triangle is 95° as the other two angles are 55° and 30°
What is a triangle?A triangle is a three-sided closed-plane figure formed by joining three noncolinear points. Based on the side property triangles are of three types they are Equilateral triangle, Scalene triangle, and Isosceles triangle.
We know the sum of all the interior angles in a triangle is 180°.
Given, In a triangle, m∠A is 55° and m∠B 30°.
Therefore m∠C = 180° - 55° - 30°.
m∠C = 95°.
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Slove 6 3/8 - 6/8 help please
Answer:
5 5/8
Step-by-step explanation:
6 3/8 - 6/8
The denominators are the same, so we borrow from the 6
Borrw 1 in the form 8/8
6 + 8/8 +3/8 - 6/8
5 11/8 - 6/8
5 5/8
LAST QUESTION!!!!!! WILL GIVE BRANLIEST!!!!! PLS JUST TAKE A LOOK!!!!!! SHARE YO SMARTNESS!!!!!!!!
6. Why is angle 1 congruent with angle C in the diagram?
A) They interior angles to the triangle.
B) They are vertical angles.
C) They are exterior angles to the triangle.
D) They are corresponding angles.
Answer:
C
Step-by-step explanation:
They are opposite angles and opposite angles are the same amount.
The answer is C because they are on the outside of the triangle.
Outside = Exterior
Helppp!! Please ASAP!! Thank you.
Answer:
4
Step-by-step explanation:
ك ل و، مثلث قائم الزاوية في ل ك ل=٥ ، ول=٧، س منتصف الوتر ك و جد طول س ل
Answer:
س ل = 4.3
Step-by-step explanation:
هتسرم وتعين بالمسطرة ^_^
Find the number of real-number solutions of the equation.
2x^2 = 37
Answer:
Step-by-step explanation:
2x^2 = 37
x^2=37/2
x^2=18.5
[tex]\sqrt{x^{2} }[/tex]=[tex]\sqrt{18.5}[/tex]
x=4.301
Weiming invests S4000 in a savings scheme that pays simple interest at a rate of 2% per annum.
Calculate the time taken for his investment to grow to $4400.
Answer:
55 YRS
Step-by-step explanation:
T=INTEREST X 100%/PRINCIPAL X RATE
T=4400X100%=440000%/4000 X 2%
T=440000%/8000%
T=55 YRS
Is AABC AXYZ? If so, identify the similarity postulate or theorem that
applies
Answer:
Similar-AA
Step-by-step explanation:
If you know 2 angles of the triangle you automatically know the third. If all the corresponding angles of two triangles are the same, they are similar.
(p.s. This sign ~ means similar)
Please answer correctly !!!! Will mark BRIANLIEST !!!!!!!!
Answer:
4x`2 + 13x + 8
Step-by-step explanation:
the ` is the squared
What are the x- and y- coordinates of point P on the directed line segment from A to B such that P is Two-thirds the length of the line segment from A to B? (2, –1) (4, –3) (–1, 2) (3, –2)
Answer: (4,-3) B
Step-by-step explanation:
Answer:
(4, –3) or B
Step-by-step explanation:
i just took the test!
Which of the following expressions is equivalent to 4^−3?
A. 1/-4^-3
B. -4^-3
C. 1/4^3
D. 1/4^-3
Answer:
C
Step-by-step explanation:
Evaluate.
Exact Form:
1 /64
Decimal Form:
0.015625
what is the following sum 4(5vx^2y)+3(5vx^2y)
i don’t know if that answer is right
Answer:
C
Step-by-step explanation:
Please refer to the picture above.
Assuming a =
[tex] \sqrt[5]{x}^{2}y } [/tex]
You can visualise the solution easily.
help me please i am marking brainiest, no one ever helps me with anything i am really struggling as a kid to move on to the next grade so please me me out with this problem please for i can force myself to keep going:
A student is doing a reading assignment. After 41 minutes of reading, she skims the pages ahead and estimates that she still has 53% of the reading to do. According to the girl's estimate, how long is the total reading assignment? Round to the nearest minute.
Answer:
Approximately 87 minutes
Step-by-step explanation:
So first see how much of the reading 41 minutes is. It is 47%.
So now to find out how much 100% is, first find out how much 1% is.
Just divide by 47.
1% = [tex]\frac{41}{47}[/tex]
And then multiply by 100 to get 100%
[tex]\frac{4100}{47}[/tex]
That is 87.2340425532
Which is 87
Can somebody give me the answers to all of theseeeeee plsssss rn
Solution,
3x^2+5x-6+(-x^2+3x+9)= 3x^2+5x-6-x^2+3x+9
= 3x^2-x^2+5x+3x-6+9
=2x^2+8x+3
2. x^2-10x-24
= x^2-(12-2)x-24
= x^2-12x+2x-24
= x(x-12)+2(x-12)
=(x-12)(X+2)
3. 3x^2-9x
take the common,
= 3x(x-3)
Hope it helpsGood luck on your assignmentDora says that of all the possible rectangles with the same area, the rectangle with the largest perimeter will have two side lengths that are 1 unit does her sentment make sense?
Answer:
maybe
Step-by-step explanation:
Dora is apparently assuming the dimensions are integers. In that case she is correct.
If the dimensions are unconstrained, the perimeter will be largest when a pair of opposite sides will be the smallest measure allowed.
For some perimeter P and side length x, the area is ...
A = x(P/2 -x)
Conversely, the perimeter for a given area is ...
P = 2(A/x +x)
This gets very large when x gets very small, so Dora is correct in saying that the side lengths that are as small as they can be will result in the largest perimeter. We have no way of telling if her assumption of integer side lengths is appropriate. If it is not, her statement makes no sense.
What is the slope of the line on the graph below?
2
-2 11
1
2
3
4
5
E
7
8
x
2.
L3
4
50
46
solve for the width in the formula for the area of a rectangle
please help quickly
Answer:
question 1) Add 7/4 to both sides. question 2) Divide 4 by both sides. question 3) x=15
Step-by-step explanation:
4. Joanna bought 3 mini cakes for a birthday party. She cuts each cake into quarters and plans to
serve each guest 1 quarter of a cake. How many guests can she serve with all her cakes?
Write a division expression and draw a picture to support your response.
Answer:
she can serve 12 guest with her cakes
Step-by-step explanation:
if 1 cake is cut into 4 peices
3 cakes will be cut into 12
En el supermercado pusieron las siguientes ofertas d frijol : 4kg a 100.80, 5kg a 170.50, 6kg a 260.60, 7kg a 320.40. ¿Cuál es la oferta que más conviene comprar? Explica tu respuesta:
Answer:
The first offer: 100.80 for 4kg
Step-by-step explanation:
To find the best offer, we just need to find the price per kilogram, and we do this by dividing the price by the number of kg:
100.80 for 4kg: 100.8/4 = 25.2 per kg
170.50 for 5kg: 170.5/5 = 34.1 per kg
260.60 for 6kg: 260.6/6 = 43.43 per kg
320.40 for 7kg: 320.4/7 = 45.77 per kg
The first offer has the smaller price per kg, so it is the best offer.
Which is another way to name ZUST?
1
0 ZTSR
OTSU
S
O ZUSR
O ZUTS
Answer:
TSU is the correct for answer
Another way to name ∠UST is ∠TSU.
What are Angles?Angles are the figure formed by the intersection of two lines or rays by sharing a common point. This point is called the vertex of the angle.
Angles are usually measured in degrees or radians.
The angle mentioned in the figure is at the point S.
This angle is the smaller angle formed at the point S.
An angle can be represented in two ways, from left to right or from right to left.
Suppose, an angle is ∠ABC.
We can represent this as ∠CBA.
So, the angle represented is ∠TSU.
Hence the angle is ∠TSU.
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Select the clause from the drop-down menu to correctly complete the sentence.
Be sure to wear goggles while you swim
Choose...
..thar last word is chlorine by the way
Answer: ;otherwise, your eyes will become very irritated from the chlorine.
Step-by-step explanation: I took the test
Answer:
the answer above is right i jus took the test
Step-by-step explanation:
find the surface area
poop h34huehu 3uddej ewdujdwqijdwejj
Four students graphed one linear function each.
Rhett
On a coordinate plane, a line goes through points (negative 4, 0) and (0, 1).
Cameron
On a coordinate plane, a line goes through points (0, 4) and (1, 0).
Ellis
On a coordinate plane, a line goes through points (0, negative 4) and (2, 0).
Braden
On a coordinate plane, a line goes through points (0, 1) and (4, 0).
Which student graphed a linear function with a y-intercept at –4?
Rhett
Cameron
Ellis
Braden
Answer:
ellis
Step-by-step explanation:
The student who graphed a linear function with a y-intercept at -4 is Ellis.
Option C is the correct answer.
We have,
The student who graphed a linear function with a y-intercept at -4 is Ellis.
Looking at the given information, Ellis's line goes through points (0, -4) and (2, 0).
The y-coordinate of the y-intercept is -4, which matches the requirement.
Therefore, Ellis is the student who graphed a linear function with a y-intercept at -4.
Thus,
The student who graphed a linear function with a y-intercept at -4 is Ellis.
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