Answer:
25x^2 - 20x + 4
Hey there!
(5x - 2)^2
= (5x - 2)(5x - 2)
= 5x(5x) + 5x(-2) - 2(5x) - 2(-2)
= 25x^2 - 10x - 10x + 4
COMBINE the LIKE TERMS
= 25x^2 - 20x + 4
Therefore, your answer is:
25x^2 - 20x + 4
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
Madison and Declan are training for a lifeguard test Madison swims 2/5 mile in 3/8 hour. Declan swims 7/10 mile in 1/5 hour who swims faster
Is charlottes graph correct?
Help!
Two of the points on this line are (-10, 8) and (5, -1). What is the slope of this line?
A
m = 15
B
m = 9/5
C
m = -3/5
D
m = 2
Answer:
C) m = -3/5Step-by-step explanation:
Formula for finding slope
m = y₂ - y₁ / x₂ - x₁Substituting the given points
m = -1 - 8 / 5 - (-10)m = -9/15m = -3/5The 6th grade is trying to raise $500 for a new 3D printer. So far, they have raised $235. What percentage of the money has the 6th grade already raised?
I need helps plssssss. If you could explain that would be great!
Answer:
[tex]5\sqrt{15}[/tex]
Step-by-step explanation:
[tex](\sqrt{3}+\sqrt{48})(\sqrt{20}-\sqrt{5})[/tex]
[tex]\textsf{Use} \quad \sqrt{a}\sqrt{b}=\sqrt{ab}[/tex]
[tex]\implies (\sqrt{3}+\sqrt{16 \cdot 3})(\sqrt{4 \cdot 5}-\sqrt{5})[/tex]
[tex]\implies (\sqrt{3}+\sqrt{16}\sqrt{3})(\sqrt{4}\sqrt{5}-\sqrt{5})[/tex]
[tex]\implies (\sqrt{3}+4\sqrt{3})(2\sqrt{5}-\sqrt{5})[/tex]
[tex]\implies (5\sqrt{3})(\sqrt{5})[/tex]
[tex]\implies 5\sqrt{3}\sqrt{5}[/tex]
[tex]\implies 5\sqrt{3 \cdot 5}[/tex]
[tex]\implies 5\sqrt{15}[/tex]
Answer:
5√15
Step-by-step explanation:
(√3 + √48)(√20 - √5)
step 1 simplify √48
(√3 + 4√3)(√20 - √5)
step 2 add √3 and 4√3
(5√3)(√20 - √5)
step 3 simplify √20
(5√3)(2√5 - √5)
step 4 subtract √5 from 2√5
(5√3)(√5)
step 5 multiply 5√3 and √5
= 5√15
explanation of each step
step 1 and 3
To simplify radicals you list the factors of the number under the sqaure root
For 48 we have 2 × 2 × 2 × 2 × 3
We then pair the factors off as powers of 2 if possible
We get 2² × 2² × 3 which can further be simplified as 4² × 3
We then list the number with the power on the outside of the radical and leave the numbers with no power on the inside to get 4√3.
This process is used to simplify √20 as well.
step 2 and 4
For these two steps we are adding and subtracting radicals with the same radicand ( number inside of the square root. ) This is very simply as we keep the radicand the same and just perform the operation to the coeffecients ( number on the outside of the square root )
Eg. a√b + c√b = (a+c)√b or a√b - c√b = (a-c)√b
Hence, 4√3 + √3 = (4+1)√3 = 5√3
Step 5.
Finally we multiply the two radicals. This is very simply as we can use the rule to do so.
a√b × c√d = (a×c)√b×d
Hence, 5√3 × √5 = (5×1)√(3×5) = 5√15
10 POINTS)Zahara asked the students of her class their gymnastic scores and recorded the scores in the table shown below:
Score Number of Students
0 1
1 1
2 2
3 6
4 4
5 3
6 2
Based on the table, what is the mean gymnastic score
Answer:
the mean is the closest of 2 or 3
Answer:
The answer is 3.5
Brainliest, please be right though! If ur wrong I will fail math and my mommy wil never lov me again!!!!!! PLS
Answer This Riddle for Fun and I Will Give Brainliest:
Riddle: If a hen and a half lays an egg and a half, in a day and a half, how many eggs will half a dozen hens lay in half a dozen days?
Please explain the answer!
Answer:
2 dozen or 24.
The number of hens was increased from 1.5 to 6 (4 times more) and the number of days was increased from 1.5 to 6 (also 4 times more). The effect is cumulative, thus the amount of eggs that will be layed will be 16 times more (i.e. 24 instead of 1.5).
What is the actual width, w, of the island if the width in the drawing is 2.5 inches?
Convince Me!
How would the proportion for Example 1, 1.5/1 = x/6, change if the scale changed?
The actual width, w, of the island is 22.5 inches if the width in the drawing is 2.5 inches.
How can we determine the actual width using a scale factor?
The actual width can be determined by multiplying the width with the scale factor.
Given that:
[tex]\mathbf{\dfrac{1.5}{1}=\dfrac{x}{6}}[/tex]
[tex]\mathbf{\dfrac{1.5}{1} \times 6=x}[/tex]
x = 9
If the width of the drawing is 2.5 inches, the actual width of the island is:
= scale factor × width of the drawing
= 9 × 2.5 inches
= 22.5 inches.
Learn more about the calculating the actual width using scale drawing here:
https://brainly.com/question/2604310
#SPJ1
HELP MEEEE I NEED IT
Answer:
Group 1: 2x, -4x, 25x
Group 2: -3y, y
Group 3: 10, -6, 100
Group 4: -6x^2, 5x^2
Step-by-step explanation:
In eac group they are the ones that can be combined together, you cannot combine numbers from diffrent groups because they are not like terms.
PLS HELP!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
C
Step-by-step explanation:
Mean is all the numbers in the list added / the number of numbers
(Ex: 14, 13, 15, 17
Mean = (13 + 14 + 15 + 17) / (number of numbers in the list)
Mean = 59 / 4
Mean = 14.75)
Range = (The largest number - the smallest number)
Mode is the number that appears the most
The median is the central number of a data set. Arrange data points from smallest to largest and locate the central number
________________________________________________________
Mean of Ernie = 19
Mean of Lori = 17.6
A is False
Range of Ernie = 7
Range of Lori = 8
B is false
Median of Ernie = 18
Median of Lori = 18
C is true
Mode of Ernie = 17
Mode of Lori = 18
D is false
I need help please, I need to graph the solution wich is 5/12
Basketball tickets were $5 for the floor seats and $2 for the grandstand seats
If 210 people attended and paid $660, how many people bought floor seats?
Answer:
Good seats sold=80
Poor seats sold=130
Step-by-step explanation:
g + p = 210 seats. Then p = 210 - g.
($5)g + ($2)p = $660. Substite 210 - g for p,
($5)g + ($2)(210 - g) = $660
Simplify, 5g + 420 - 2g = 660 => 3g = 240 => g = 80
80 and 130
write the algebraic expression that matches this graph:
(correct answer gets brainiest)
Answer:
y=-|x+1|+1
Step-by-step explanation:
im not too sure though
one question please help me with this math problem
Answer: Austin college, 5, Barton college, 3.
Step-by-step explanation:
In the stem 7 there is no 70, but higher, so we just count the leaves on the stem 6; Austin's college contains 5 numbers, and Barton's contains 3.
Which expression is equivalent to 2(3w)?
Complete the proof.
Given:
CM ⊥ AB
∠3 = ∠4
Prove:
△AMC ≅ △BMC
Use the information provided to complete a two-column proof.
AM = MB
CM = common side
∠3 = ∠4
△AMC ≅ △BMC
What is a triangle?It is a two-dimensional figure which has three sides and the sum of the three angles is equal to 180 degrees.
We have,
CM ⊥ AB
∠3 = ∠4
We have to prove △AMC ≅ △BMC.
Now,
If CM ⊥ AB
AM = MB
Now,
AM = MB
CM = common side
∠3 = ∠4
△AMC ≅ △BMC
Thus,
AM = MB
CM = common side
∠3 = ∠4
△AMC ≅ △BMC
Learn more about triangles here:
https://brainly.com/question/25950519
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can someone please help me thx
Answer:
Step-by-step explanation:
So first you need to find to Constant of Proportionality and to do that you need to divide either 96 by 3 or 160 by 5. The answer you get is the first blank, then to find the second blank you take 14 and multiply it by the first answer.
PLS heeeeeeeeelp..............
Answer:
420
Step-by-step explanation:
Base is the bottom across
Height is in the middle so multiply them and you get 420 inches
Donald has $38. He earns $7 for 1 hour working at the local grocery store. Donald wants to buy a bicycle for $108
Enter the minimum number of hours Donald must work at the grocery store to be able to buy the bicycle.
May you please help me?
3(6f+8)
Answer:
first of all what you have to do is to use a method called distribute property when you see this type of questions and multiply for example 3 times 6f and getting an answer of 18f and then finally you just multiply 3 times 8 and the answer is 24 so basically the answer should be 18f+24 and hope this helps and can you also tell me the answer choices and if it was correct or not and thanks for helping you.
Step-by-step explanation:
Answer:
18f+24
Step-by-step explanation:
Use the Distributive Property of Multiplication...
3 x 6f = 18f (note; when multiplying a number by a veriable, just add the variable to the product).
3 x 8 = 24
answer: 18f+24
PLEASE HELP I need this done by the end of the day.
Answer:
Percent Change
[tex]\sf percent\:change=\dfrac{final\:value-initial\:value}{initial\:value} \times 100[/tex]
[tex]\sf \implies \textsf{percent change from 1845-1846}=\dfrac{148-118}{118} \times 100=25.4 \%[/tex]
[tex]\sf \implies \textsf{percent change from 1846-1847}=\dfrac{139-148}{148} \times 100=-6.1 \%[/tex]
[tex]\sf \implies \textsf{percent change from 1847-1848}=\dfrac{151-139}{139} \times 100=8.6 \%[/tex]
(all solutions are given to the nearest tenth)
A circular hot spring has a diameter of 96 meters. Over time, the diameter of the spring decreases by 8 meters. By how many square meters does the area of the hot spring decrease? Use 3.14 for pi.
about (BLANK) m2
The area decreases by 1155.52 square meters
Step-by-step explanation:What we must do is calculate the area before and after making the diameter cut.
The area of a circle is equal to:
a = pi * r ^ 2
now the diameter is equal to:
d = 2 * r
therefore r,
r = d / 2
before the cut would be
r = 96/2
r = 48
replacing in the area formula
a1 = 3.14 * 48 ^ 2
a1 = 7234.56 square meters.
after cutting the diameter decreases by 8, that is, 96 - 8 = 88, calculating the radius would be:
r = 88/2
r = 44
now calculating the new area would be:
a2 = 3.14 * 44 ^ 2
a2 = 6079.04 square meters.
now we calculate the difference
a1 - a2 = 7234.56 - 6079.04
= 1155.52 square meters
means that the area decreases by 1155.52 square meters
show work on how to do it
Answer:
11 soccer balls (rounded estimate; should be close to 11)
Step-by-step explanation:
Because you need to match the limit, you first have to convert in. to ft. That will get you at 2.3 (it is an non-stopping number, so I rounded to the tenths). 11 x 2.3 is 25.3. You can’t go lower, so you have to have that extra soccer ball. Hope this helps.
4 × 32 + 8 ÷ 2 - (5 + 3)
Answer:
124
Step-by-step explanation:
asswer this asap please
Answer:
A and E
Step-by-step explanation:
they are both of them correct
Select all the situations where knowing the surface area of an object would be useful.
A. The amount of paint needed to paint a room
B. The amount of water needed to fill an aquarium
C. How much wrapping paper a gift will need
D. How many watermelons fit in a box for shipping
E. The amount of gasoline left in the tank of a vehicle
A theater audience is half adults and half children. One person is chosen at random to volunteer on stage. Toss a coin to model the person chosen from the audience. Perform 40 trials of the experiment. What is your experimental probability that the person is a child?
Answer:
50% or 1/2
Step-by-step explanation:
P(adult)=0.5
P(children)=0.5
0.5*40=20
20/40=2/4=1/2=0.5
0.5*100=50%
I need help on this ASAP!
Answer:
4311/9900 = 0.4354
530/900 = 0.58
674/990 = 0.689
4936/990 - 4.985
8099/ 990 = 8.180
Step-by-step explanation:
Just divide and it should give you the decmile version
Heyy Brain People! Can I get some help with 8th grade math!?
Which statement is true about the slope?
A) Jay is faster because he is running 5 m/s.
B) Jay is faster because he is running 5 m/s.
C) Jay is faster because he is running 6 m/s.
D) Nathan is faster because he is running 6 m/s.
Answer:
Jay has the fastest time because the he gained more meters per second.
Step-by-step explanation:
hope this helps if do mark brainllest pls!
Answer:
A) Jay is faster because he is running 5 m/s