Answer:
(x+(-x))²=0
Step-by-step explanation:
4 - a
-4 - b
1 - c
D = b²-4ac
D = (-4)² - 4×4×1
D = 16-16=0 => only one root
x= -b/2a
x= 4/2×4
x= 4/8 = 1/2 = 0.5
Robert has 7 pounds of ground beef. He is dividing the beef into burgers that are each 1/3 of a pound. How many burgers can he make
please helppp!!!!!! im giving all my points left
A teacher wants to compare how two classes have performed on a test they have taken. Should the teacher report the test mean or the test median? Which measure might describe the data set better? Why?
Your response should be 3-5 sentences long.
Answer: median
Step-by-step explanation: In this situation the mean is widely preferred as the best measure of central tendency because it is the measure that includes all the values in the data set for its calculation
You are on vacation and want to buy a pair of sunglasses for $15 or less. You find a pair with a price tag of $11. The cashier says the total cost will be $11.91.
Is this correct?
Yes, this is the correct amount with tax.
N0, this is not the correct amount.
Explain your thinking.
Answer:
No, this is not the correct amount.
Step-by-step explanation:
Assuming this purchase is being made in the USA, the average federal tax rate on purchased goods is between 2.9% and 7.25% of the price. Let's be generous and assume that wherever you're making this purchase, the sales tax is 7.25%.
7.25% of 11 = .7975, or .80 cents. Add that to 11 to get $11.80.
The extra 91 cents tax is around 12.09% tax which is a lot higher than normal. You're being ripped off!
!!!!!!!!!!!!!!!!!!!!help me
Answer:
pretty sure its 75
I have a rectangular prism 9 ft 15 ft by 8 feet I need to find the surface area and the volume
Answer:
Step-by-step explanation:
A=2(xy+xz+yz) where x,y,z are its dimensions
A=2(9(15)+9(8)+15(8))
A=2(135+72+120)
A=2(327)
A=654ft^2
V=xyz
V=9(15)8
V=1080ft^3
A circle is painted in the center of a basketball court. If the diameter of the circle is 12 feet, what is the approximate amount of space inside of the circle? (Use 3.14 as an approximation of pi.)
28.26 square feet
37.68 square feet
113.04 square feet
226.08 square feet
Answer:
113.04
Step-by-step explanation:
Patrick is reading a book about the history of baseball. The book is 210 pages long; 140 of the pages have illustrations on them. If Patrick opens the book to a random page, what is the probability that the page will have an illustration on it?
Answer:
Probability: 140/210= 14/21A store pays $2.50 for an item. Your friend finds the
selling price when the markup is 40%. Is your friend
correct? Explain your reasoning.
find two consecutive odd integers whose product is equal to 63
Answer: If you need to see a systematic solution, let the 2 numbers be n and n + 2.
n(n + 2) = 63
n2 + 2n - 63 = 0
(n - 7)(n + 9) = 0
n = 7 or -9
If n = 7, then n + 2 = 9
If n = -9, then n + 2 = -7
This is based on knowledge of composite numbers: 7 times 9 = 63.
The only other pair of numbers satisfying this is -7 and -9
A bit confusing but hopes that helps out somewhat
what is the value of the exponital expression below 36 1/2
BRT,DBF,HIL,NPR,.....
PLEASE ANSWER THIS QUESTION IS IN THE IMAGE!! DUE TODAY!
20 POINTS!
I cannot do the math on this but the answer equals to 4 and 1/14
what is 700÷6.3x I did help
Answer:
111.1111111111111
Step-by-step explanation:
7x2 + 4x - x2 whats the answer?!?
Answer:
14 + 2x I think
Step-by-step explanation:
Wait for more responses if needed
Answer:
[tex] {6x}^{2} + 4x[/tex]
Step-by-step explanation:
1) Collect like terms.
[tex](7 {x}^{2} - {x}^{2} ) + 4x[/tex]
2) Simplify.
[tex] {6x}^{2} + 4x[/tex]
Therefor, the answer is 6x² + 4x.
Kimberly has $80. She wants to purchase a school bag for $16 and as many pairs of shoes as she can. Each pair of shoes is $8. Write an inequality for the number of school shoes she can purchase.
A. 16x + 8 ≤ 80
B. 80 + 16 ≤ 8x
C. 16x + 8x ≤ 80
D. 8x + 16 ≤ 80
Answer:
D
Step-by-step explanation:
Can y’all help me on question 16?!
Answer:
[tex]e^{2} - 21[/tex]
Step-by-step explanation:
Hey there!
Let's get you your answer!
We have to multiply e by e. Then we need to subtract 21 from it. That would look like this: [tex]e^{2} - 21[/tex]
Hope that helps!
Solve for x in the figure below
Answer:
x=13
Step-by-step explanation:
all triangles add up to 180 so set equal to 180
77+90+x=180
solve for x
x=13
Answer:
x = 13
Step-by-step explanation:
90 + 77 + x = 180
90 + 77 = 167
180 - 167 = 13
x = 13
Plz mark as brainliest if correct! Have a nice day!!!
-Lil G
Connie had some marbles. She gave 6 to Juan l. Now she has 10 marbles left. How many marbles did Connie have to start with? What equation(s) might represent this story problem?
16 marbles 16-6 since she she gave 6 and still has 10 left
Answer plz. Give an explanation so I know ur not just getting points so I dont report. Thank you!!!!......
Answer:
B.
Step-by-step explanation:
Because, that's how you find it.
1.5 = 2p
/2 /2
0.75=p
The area of the triangle below is 28.8 square centimeters. What is the length of the base?
7.2 cm is the height
Answer: 8 cm
Step-by-step explanation:
(1/2)(b)(7.2) = 28.8
b = 8 cm
Can you help me on question nine please?!
Answer:
24
Step-by-step explanation:
plug in 2
2^3+7(2)+2
2×2×2+14+2
8+14+2
24
help me pleaseee! thank you!!!
Answer:
you shouldn't be cheating kid
A checking account contains 6,274.54.how much is left after withdrawing $385.79
Answer:
$5888.21
Step-by-step explanation:
when you see the words withdrawing remember that u always are subtracting so the equation will be 6274.54 - 385.79.
Please help solve this angle problem! It is due today!
Answer:
The answer is B.
Step-by-step explanation:
Two angles that add up to 90° are called complementary angles.
Angles A and B are complimentary angles. Complimentary angles are angles which add up to exactly 90 degrees.
They are often confused with supplementary angles, but supplementaries add up to 180.
Find sequence 10 5/22, 9, 7 17/22, ___, 5 7/22
Answer:
6⁶/11
Step-by-step explanation:
adding -27/22 to the previous number will give you the next number in the sequence
10 5/22 + -27/22 = 9
9 + -27/22 = 7 17/22
7 17/22 + -27/22 = 6 6/11
6 6/11 + -27/22 = 5 7/22
Find the length of the third side. If necessary, round to the nearest tenth
Answer:
x=14.28
Step-by-step explanation:
24^2+x^2=28^2, Pythagorean theorem
x^2=28^2-24^2
x^2=(28+24)(28-24)
x^2=52*4
x^2=204
x is around 14.28
You are thinking of making your mansion more energy efficient by replacing some of the light bulbs with compact fluorescent bulbs, and insulating part or all of your exterior walls. Each compact fluorescent light bulb costs $4 and saves you an average of $2 per year in energy costs, and each square foot of wall insulation costs $1 and saves you an average of $0.20 per year in energy costs.? Your mansion has 300 light fittings and 2800 sqft of uninsulated exterior wall. To impress your friends, you would like to spend as much as possible, but save no more than $800 per year in energy costs (you are proud of your large utility bills). How many compact fluorescent light bulbs and how many square feet of insulation should you purchase? How much will you save in energy costs per year?
Answer:
1) The number of compact fluorescent light bulbs to buy = 120 bulbs
The number of square feet of insulation to be purchased = 2,800 sqft
2) The amount of savings in energy cost per year = $800
Step-by-step explanation:
The cost of each compact fluorescent bulb = $4
The average amount saved by each bulb per year = $ 2
The cost of each square foot of wall insulation = $ 1
The amount saved by each square foot of wall insulation = $ 0.20
The number of light fittings in the mansion = 300 fittings
The area of uninsulated exterior wall of the mansion = 2,800 ft.²
The maximum amount saved in energy cost = $800
1) Let 'x' represent the number of compact fluorescent bulb used and let 'y' represent the number of square feet of insulation purchased
We have;
2·x + 0.2·y ≤ 800
∴ y ≤ 4,000 - 10·x
Total Cost, P = 4·x + y
From the combined graph of the total cost and cost savings, we have the highest total cost is given when the wall insulation area, y is maximum, that is y = 2,800 and x = 120
Therefore, we have;
Total Cost, P = 4·x + y
∴ P = 4 × 120 + 2,800 = 3,280
Therefore, the number of compact fluorescent light bulbs and the number of square feet of insulation to be purchased are 120 bulbs and 2,800 square feet of insulation respectively
2) The amount of savings in energy cost per year, [tex]C_s[/tex] = 2·x + 0.2·y
Where;
x = 120, and y = 2,800
∴ [tex]C_s[/tex] = 2 × 120 + 0.2 × 2,800 = 800
The amount of savings in energy cost per year, [tex]C_s[/tex] = $800
Alan has 152 pictures to put into an album.he can put 8 pictures on a page.how many pages will he fill?
Total pages = total pictures / pictures per page.
Total pages = 152 / 8
Total pages = 19
Answer:
19 pages
Step-by-step explanation:
152/8 = 19 pages
How to get 14 equal pieces from 6.3m of cord
Extra Points and brainliest! Question below
Answer:
14 one fourths
Step-by-step explanation:
First, we convert 7/2 into a fraction with the denominator of a four. To do this, we multiply the top and bottom by 2. 7*2 is 14, and 2*2 is 4, which gives us 14/4. This means that there are 14 one fourths in 7/2. Hope this helps!
Answer:
14 fourths
Step-by-step explanation:
Hey There!
So to solve this problem we need to divide 7/2 by 1/4
[tex]\frac{7}{2}divided by\frac{1}{4} =14[/tex]
Therefore 14 fourths can go into 7/2