Will the square of a negative number always be positive? Explain why.
Will the cube of a negative number always be negative? Explain why.
Answers
Answer:
the square of a negative number always be positive
eg: -2² = -2×-2 = (-×- = +) +4
the cube of a negative number always be positive
eg: -2³ = -2×-2×-2 = (-×-×- = +) -8
Step-by-step explanation:
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Related Questions
Identifying Ways to Live a Healthier Life, NEED HELP ASP!!!!!!!!
Answers
Answer: blank 1: regulate
blank 2: the amount
blank 3: doctors
Step-by-step explanation:
I NEED HELP ON THIS QUESTION PLSSSS.
Answers
Answer:
F
Step-by-step explanation:
the triangle is isoceles and the two bottom angles are equal to each other.
Margo is wrapping a box that is 7 inches long, 10 inches wide, and 4 inches high. How much wrapping paper will she need to cover the entire box?
Answers
She will need to cover six sides of the box. To calculate the surface area of the box, you'll need to add the area of each side. The formula for surface area is: 2lw + 2lh + 2wh. Plugging in the dimensions of the box, we get:
2(7 x 10) + 2(7 x 4) + 2(10 x 4) = 140 + 56 + 80 = 276
So, she will need 276 square inches of wrapping paper. But since she doesn't need to wrap the bottom of the box, we subtract one of the sides, which gives us a total of 268 square inches of wrapping paper.
To calculate the surface area of the box, you need to add the area of all six sides. The area of each side can be found by multiplying the length by the width.
- The area of the front and back sides is 7 x 4 = 28 square inches each.
- The area of the top and bottom sides is 10 x 4 = 40 square inches each.
- The area of the two side sides is 7 x 10 = 70 square inches each.
So, the total surface area of the box is 2(28) + 2(40) + 2(70) = 56 + 80 + 140 = 276 square inches.
Therefore, Margo will need at least 276 square inches of wrapping paper to cover the entire box.
Answer:280 in
Step-by-step explanation: First we multiply the length by the width and that would be 7 by 10 and we would get 70. Next we multiply the height by the total of (l x w), so 4 x 70 would be 280. Margo needs a total of 280 inches of wrapping paper to cover the entire box. Hope this helps! :)
Find the area of the figure.
Answers
13x4=52
2x3=6
52-6=46
What is the value of the expression 30 divided by (negative 6)?
_________________________________________________
A) –180
B) –5
C) 5
D) 24
Answers
Answer:
the answer is c-5
Step-by-step explanation:
Answer:
B, -5
Step-by-step explanation:
I confess...I used a calculator!
The length of a rectangular garden is 20 feet and the width is 15 feet. What is ratio of length to width?
Answers
Answer: 4:3 because 20 divided by 5 is 4 and 15 divided by 5 is 3.
The circumference of a circular park is approximately 18 feet. What is the approximate area inside the circular park?
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Answer:
25.685 square feet.
Step-by-step explanation:
Circumference = 2 * π * radius
From this, we can derive the formula for the radius:
radius = Circumference / (2 * π)
Let's substitute the value of the circumference and calculate the approximate radius:
radius = 18 / (2 * π)
radius ≈ 18 / (2 * 3.14159)
radius ≈ 2.865 feet
Now that we have the approximate radius, we can calculate the area:
Area ≈ π * radius²
Area ≈ 3.14159 * (2.865)²
Area ≈ 3.14159 * 8.193225
Area ≈ 25.685 square feet
Therefore, the approximate area inside the circular park is approximately 25.685 square feet.
C = 2πr
where C is the circumference and r is the radius of the circle.
In this case, we are given that the circumference is approximately 18 feet, so we can set up the following equation:
18 = 2πr
Solving for r, we get:
r = 9/π ≈ 2.864 feet
Now we can use the formula for the area of a circle:
A = πr^2
Substituting the value we found for r, we get:
A = π(2.864 ft)^2 ≈ 25.85 ft^2
Therefore, the approximate area inside the circular park is approximately 25.85 square feet.
A section of wall for a mural is shaped like a parallelogram with a base length of 7 feet and a height of 11 feet. A can of paint will cover 20 square feet.
How many cans of paint will be needed to paint the section of wall?
Answers
Answer:
10
Step-by-step explanation
because im smart and I also took the test
QUICK!! I NEED HELP PLEASEE!!! NO WRONG ANSWERS PLEASE!!!!!!!
You select a marble without looking and then put it back. If you do this 48 times, what is the best prediction possible for the number of times you will pick a green or an orange marble?
LOOK AT THE IMAGE
Answers
Step-by-step explanation:
the correcto anwar
es pero que te cirba
Answer:
The best prediction is that you will pick a green marble approximately 7 times and an orange marble approximately 5 times.
Step-by-step explanation:
If there are 5 orange marbles and 7 green marbles out of a total of 48 marbles, the best prediction for the number of times you will pick a green or an orange marble would still be proportional to the ratio of green and orange marbles.
The ratio of green marbles to the total number of marbles is 7/48, and the ratio of orange marbles to the total number of marbles is 5/48.
To predict the number of times you will pick a green marble, you can multiply the total number of selections (48) by the ratio of green marbles:
48 * (7/48) = 7
Similarly, to predict the number of times you will pick an orange marble:
48 * (5/48) = 5
Therefore, the best prediction is that you will pick a green marble approximately 7 times and an orange marble approximately 5 times.
Can you please help me?
Answers
Answer: 18
Step-by-step explanation:
x is the number we need to find
We have this equation :
2 ( 3x - 10 ) + 2 = 5x
= 6x - 20 + 2 = 5x
= -20 + 2 = 5x - 6x
= -18 = -1x
x = -18 ; 18
Hope it helps !
Answer: the original number is 18
Step-by-step explanation:
Pls help me in math, I need this tomorrow, thx :)
Answers
Answer: Range and mean = 8 of both
variance of Set X= 4.7
variance of Set Y= 4.6
Step-by-step explanation:
Two sets of data, set X and set Y are given
a.) Range is the difference of the highest value and the lowest value,
Therefore, Range of set X = 12-4=8
Range of set Y = 12-4=8
Now, Mean of a given data set is the average of all the terms present in the given data set
Mean of set X= Σxif/n = (4+5+6+7+16+18+24)/10 = 8
Mean of set Y= (4+5+7+32+20+12)/10= 8
Therefore, both the data sets has same range and mean.
b.) Standard deviation tells about the variability of the date and is given by,
S.D= σ = √∑ ( X − μ )^2/n
S.D of set X= √(16+9+4+1+0+1+16)/10= √4.7
S.D of set Y= √(16+9+1+0+4+16)/10= √4.6
Variance is the square of S.D, that is, σ^2
Therefore, variance of set X=4.6
variance of set Y= 4.7
c.) The calculated variances of set X and set Y are 4.7 and 4.6 respectively. It implies that the data is more distributed or varied in set X than in set Y. In the other words, data in set Y is more consistent data than of set X.
To learn more about S.D and variance,
https://brainly.com/question/15858152
https://brainly.com/question/12402189
Answer: Range and mean = 8 of both
variance of Set X= 4.7
variance of Set Y= 4.6
Step-by-step explanation:
We know
a.) Range is the difference of the highest value and the lowest value,
Therefore, Range of set X = 12-4=8
Range of set Y = 12-4=8
Now, Mean of a given data set is the average of all the terms present in the given data set
Mean of set X= Σxif/n = (4+5+6+7+16+18+24)/10 = 8
Mean of set Y= (4+5+7+32+20+12)/10= 8
also
b.) Standard deviation tells about the variability of the date and is given by,
S.D= σ = √∑ ( X − μ )^2/n
S.D of set X= √(16+9+4+1+0+1+16)/10= √4.7
S.D of set Y= √(16+9+1+0+4+16)/10= √4.6
Variance is the square of S.D, that is, σ^2
Therefore, variance of set X=4.6
variance of set Y= 4.7
c.) The calculated variances of set X and set Y are 4.7 and 4.6 respectively. It implies that the data is more distributed or varied in set X than in set Y. In the other words, data in set Y is more consistent data than of set X.
Please help me out on this
Answers
Answer:
-21+8x+5p
Step-by-step explanation:
-12+11x+9p-3x-4p-9=?
rearrange to combine like terms in next step
-12-9+11x-3x+9p-4p
combine like terms
-21+8x+5p
-21+8x+5p is your answer, hope this helps!
Determine: minimum, maximum, median, 1st quartile, and 3rd quartile
10, 12, 7, 9, 4, 15, 20, 21
Answers
Minimum: 4
Maximum: 20
Median: 11
1st quartile: 9
(4 7 [9] 10 11)
3rd quartile: 15
(11 12 [15] 20 21)
At a restaurant, the ratio of cheeseburgers ordered to hamburgers ordered is 5:3. If 60 hamburgers are ordered, how many cheeseburgers are ordered?
Answers
Answer:
20
Step-by-step explanation:
3x = 60
x = 20
--> 5*20 = 100 cheeseburgers
Answer:
100
Step-by-step explanation:
Ratio of cheeseburgers to hamburgers is 5:3
If we let C be the number of cheeseburgers and H the number of hamburgers we can write this as
C:H = 5:3
or
C/H = 5/3
Multiply both sides by H
==> C = (5/3)H
Given H =- 60, number of cheeseburgers, C = (5/3) x 60 = 100
61. A survey asked students what classes they
have. Based on the results, the following
statements are all true.
• 34 students have Science
• 28 students have Math.
• 5 students have both Math and Science.
• 6 students have neither class.
How many students were surveyed?
Answers
I hope you got a good score on your assignment! ^v^
73 students were surveyed
A cylindrical tank of water as a radius of 1 foot, and a height of 2 feet. The tank is filled to the brim with water and a spherical ball is dropped inside, causing water to spill out of the tank. If the ball has a radius of 18 inches, how much water is left in the tank after the ball has sunk to the bottom?
Answers
Answer:
you need to find the volume of the cylinder 1rst
Step-by-step explanation:
If u={a,b,c,d}and p={b,d,e}find p(bar at the top)
Answers
Answer:
{a , c}
Step-by-step explanation:
first find u intersection p
n(U n P ) = {a , b , c , d} n {b , d , e}
={d , b}
intersection means element or values which lies in both the sets
now to find p complement
note : p( bar at the top ) is read as p complement
p complement = n(U) - n(U n P)
={a , b , c , d} - {d , b}
={a , c}
n(U) -n(U n P) means the elements which is only in n(U ) but not in n(U n P)
Answer:
a,c
Step-by-step explanation:
THE VET TOLD HARMONY THAT HER CAT SHOULD WEIGH AT MOST 30 LBS. HER CAT WEIGHS 46 POUNDS, SO HARMONY SET A GOAL THAT HER CAT WOULD LOSE 2 POUNDS PER WEEK. WHICH INEQUALITY REPRESENTS THE NUMBER OF WEEKS IT WILL TAKE HARMONY'S CAT TO REACH 30 POUNDS? LET X REPRESENT THE NUMBER OF WEEKS.
A. 46-2x ≤ 30
B.2x - 30 ≥ 46
C.30 + 2x ≤ 46
How many weeks, at least, will it take Harmony to help her cat lose weight and get to 30 pounds?
Answers
Answer The answer will be "A" - 46 - 2x ≤ 30
Step-by-step explanation:
The ultimatum is the weight has to be equal to or under 30. This is the only answer that you provided that supported that.
46 - 30 = 16
16 / 2 = 8
At two pounds per week it will take 8 weeks to lose 16 pounds.
can someone help me with these
Answers
question 2: five goes into forty-one 8 times, so put the 8 to the left of “r”. multiply 5 x 8 = 40, and put the 40 below the 41. subtract 41-40= 1, meaning the 1 is what you put to the right of “r”.
question 3: six goes into twenty-seven 4 times, so put the four above the 27. multiply 6 x 4 = 24, so put the 24 below the 27. subtract 27-24= 3, meaning 3 is the number that goes to the right of “r”
Answer:
8.2
4.5
6.5
Step-by-step explanation:
HELP PLEASE!!
The kinetic energy of a car can be described by the function KE = 12 mv2, in which the constant m is the mass of the car and v is the car’s velocity. If the velocity keeps increasing, the kinetic energy will —
A remain constant
B continually increase
C increase and then become constant
D decrease to zero
Answers
When solving real-world problems involving rational numbers, what can help you determine which operation and strategy to use?
Answers
See the picture to solve the question 1Question=10 points
Answers
Answer:
1.5x+2.75y+33
Step-by-step explanation:
Call x: the hour of dogs keeping
y: the hour of wolves keeping
The total charge for dogs keeping: 19+ 1.5x
The total charge for wolves keeping: 14+2.75y
Total cost (19+ 1.5x)+(14+2.75y)= 1.5x+2.75y+33
Which of the following expressions represent the distance between -6 and 7 on the number line?
Answers
Answer:
C
Step-by-step explanation:
The lines mean the distance away from 0. When i say lines, I mean the two "l" that accompany the numbers. I forgot what there called (good job me).
Since we want to know how far apart they are, we need to add them.
Answer: If the equations are in absolute value then C, D, F. IF not in absolute value than just F.
Step-by-step explanation:
there is a distance of 13 between the two points so find any that have a total of 13.
Carrie had a homework assignment where she had to chart the amount of snowfall during a 4 month period over 2 consecutive years. In January of the first year, it snowed 3 inches, and in the second year, it snowed 5 inches. In February of the first year it snowed 1.5 inches, and in the second year, it snowed 4 inches. In March of the first year, it snowed 2.5 inches, and in the second year, it snowed 7 inches. In April of the first year it snowed 4 inches, and in the second year, it snowed 6 inches. In which month did the highest ratio of snowfall?
Answers
Answer:
Step-by-step explanation:
The ratio would be first year (fy) over second year (sy).
fy/sy
January: 3/5 = 0.6
February: 1.5/4 = 0.375
March: 2.5/7 = 0.3571428
April: 4/6 = 0.666..
April is the largest number. Therefore the month with the highest ratio of snowfall is April
Use a number line to order the numbers from least to greatest.
Answers
Assign the numbers to the number line in the following order:
2.15=2.15
220%=2.2
9/4=2.25
*2.15* is easy enough to place as it is already in decimal form. However, the other 2 options need to be converted to decimals in order to be placed. We have the fraction 9/4 and percentage 220%. 9/4 can either be simply divided on a calculator or turned into the mixed fraction 2 and 1/4, which is *2.25*. Finally, we know that converting a decimal to a percentage we multiply the decimal by 100. Therefore, to convert a percentage to a decimal we divide 100 or move the decimal to the left 2 places. With this conversion rule, 220% transforms to *2.2* and we have the third and final number for our number line. Arranging these three numbers from least to greatest:
2.15, 2.2, 2.25
if 4/4 is 1 then 9/4 is 2 whole with 1/4 left
220%=2.2 and 2.15 is still 2.15
Question 13 of 15
A canoe travels 6 miles per hour downstream and 2 miles per hour upstream.
Let x represent the canoe's speed with no water current (still water) and y
represent the speed of the water current, in miles per hour. Then the situation
can be represented by this system of equations:
Choose the two correct options.
x + y = 6
x - y = 2
A. The speed of the canoe in still water is 4 miles per hour.
B. The speed of the canoe in still water is 2 miles per hour.
C. The speed of the water current is 4 miles per hour.
D. The speed of the water current is 2 miles per hour.
Answers
ANSWER : A AND D.
Step-by-step explanation:
the water current would be 2 mph and the canoe is 4 mph
See, 6miles downstream it would be 4mph of canoe + water boost ( 2 mph) = 6mph.
The canoe upstream would be 4mph - water resistance (2mph) = 2mph upstream.
The answers should be A and D.
Hurry Need Help I Will Give Brainliest
Answers
Answer:
180-30=150 degrees
180-165= 15 degrees
Sorry, I am not an expert at this course. I was trying to help :)
Little Debbie sold 2 boxes of Swiss Rolls for $10 how much money is 1 box of Swiss Rolls
Answers
reason: because $10/2 is $5
Because you do 10 divide by 2
Write an ordered pair corresponding to Point A shown in the coordinate plane.
Point A:(__, __)
Answers
Answer:
The pair is (1, 2) have a nice day
Translate the sentence into an equation. Two less than the product of 5 and a number equals 9. Use the variable c for the unknown number.
Answers
Answer:
The equation is: \(5c-2=9\)
Step-by-step explanation:
Since 2 less than the product of 5 and a number c is equal to 9, it follows:
\(5c-2=9\)