Step-by-step explanation:
f(x) = 2x²+ 8x -1
f(6) = 2(6) + 8(6)-1
= 13 + 48 - 1
= 61-1
= 60.
The retail price is 81% more than the original price. Hence, retail price = percent of original price
Answer: retail price x 1.81
Step-by-step explanation:
Price 100
Mark up is 81 percen
100 plus .81 equal 181
find the rate of change on the table
Answer:
51
Step-by-step explanation:
what is the best interpretation of the y intercept of the line . question 5
Answer:
Last one
A student‘s test score is likely to increase about 20 points for each hour of studying
Step-by-step explanation:
We can see that the indepedent value is hours spent studying and dependent value is test scores.
As the hours of studying get greater, so does the test scores. So it has to be either the second to last or last one.
If you pay attention to the numbers, you’d see that the last one would be the answer.
Answer:
last one
Step-by-step explanation:
each hour spent studying increases the by around 20 points. the slope of the line is 20.
btw there's nothing on the intercept in the question
find the inverse y=-1+1/5x pleaseee help
Answer:
there is no inverse
Step-by-step explanation:
to find the inverse you gotta interchange the variables and solve for y but it is 0 sooo there is no inverse, i believe.
Bob has two bags of coins.
The first bag has 3 nickels and 5
quarters. The second bag has 6
nickels and 2 quarters. Bob will
randomly select 1 coin from each
bag. What is the probability that
Bob will select a quarter from
each bag?
PLEASE HELP MEEEE
Answer: 40%
Step-by-step explanation: Get nae naed
Which of the following number cannot represent the 3 sides of a triangle?
{14,28,39}
{4,16,19}
{4,11,13}
{5,16,21}
PLEASE HELP I WILL GIVE BRAINLIEST
Answer:
d 5,16,21 Am sure I think
Step-by-step explanation:
Answer:
{5,16,21}
Step-by-step explanation:
sides of triangle: the sum of every two sides must be greater than the third sides.
{14,28,39}
=> 14 + 28 > 39, 14 + 39 > 28, 28 + 39 > 14 (correct)
{4,16,19}
=> 4 + 16 > 19, 4 + 19 > 16, 16 + 19 > 4 (correct)
{4,11,13}
=> 4 + 11 > 13, 4 + 13 > 11, 11 + 13, > 4 (correct)
{5,16,21}
5 + 16 not > 21 (wrong)
please answer correctly, will give brainliest
Answer:
b
Step-by-step explanation:
match each division expression with the correct quotient
Answer:
2) 2x + 6
3) 8x - 2
4) 5x - 8
Step-by-step explanation:
The quotient of expression (18x²+15x) divided by 3x is 6x+5.
What is an expression?An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division.
A quotient is a quantity produced by the division of two expressions.
Here,
A) (18x²+15x)÷3x
Now, 3x(6x+5)/3x
= 6x+5
B) (16x²+48x)/8x
= 8x(2x+6)8x
= (2x+6)
C) (56x²-14x)/7x
= 7x(8x-2)/7x
= 8x-2
D) (20x²-32x)/4x
= 4x(5x-8)/4x
= 5x-8
Therefore, the quotient of expression (20x²-32x) divided by 4x is 5x-8.
Learn more about the quotient here:
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hello please help thanks
Answer: Its C. Its a gas because it evaporated.
Step-by-step explanation:
HELPPPPPP!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
A) gemma puts 7 rocks into each of her 8 gardens
Step-by-step explanation:
20*20= 75 True or False
Answer:
False
Step-by-step explanation:
LHS : -
20 x 20
= 400
is not equal to RHS.
Tim washed 15 cars in 3hours.how many cars can he wash In 7 hours?
Answer:
35 cars
Step-by-step explanation: ok so here is how you do it you divide 15 and 3 to find out how much cars Tim washed in one hour so in this case we got 5 then we multiply the hours by 7 and we get 35 cars
Answer:
I believe the answer is 35.
Step-by-step explanation:
15+15=30
30+5=45
1 hour = 5 cars
3 hours = 15 cars
6 hours = 30 cars
7 hours = 35 cars
15 divided by 3 = 1
so yeah hope this helps you.
Find the coordinate of the points of intersection of the graphs without building them: 20x - 15y = 100 and 3x - 5 =6y
Answer:
(-4.666667, -3.16667)
Step-by-step explanation:
(-4 2/3, -3 1/6)
9514 1404 393
Answer:
(x, y) = (7, 2 2/3)
Step-by-step explanation:
We can multiply the first equation by 2/5 to get ...
8x -6y = 40
The second equation gives an expression for 6y that we can substitute.
8x -(3x -5) = 40
5x +5 = 40 . . . . . eliminate parentheses
x +1 = 8 . . . . . . . .divide by 5
x = 7 . . . . . . . . . .subtract 1
Using the second equation, we find ...
3(7) -5 = 6y
y = 16/6 = 2 2/3
The coordinates of the point of intersection are (x, y) = (7, 2 2/3).
Which of the following phrases are equations?
Choose 2 answers:
Choose 2 answers:
(Choice A)
A
4x^34x
3
4, x, cubed
(Choice B)
B
b=9b=9b, equals, 9
(Choice C)
C
7+19=26\text{}7+19=267, plus, 19, equals, 26, start text, end text
(Choice D)
D
a+9>72a+9>72a, plus, 9, is greater than, 72
(Choice E)
E
x+y-\dfrac83x+y−
3
8
Answer:
c b
Step-by-step explanation:
khan
PLEASE HELP ASAP I'M BEING TIMED!!!!!!!!!!!!!!!!!!!!!! WIll mark BRAINLIEST!!!!!!!!!!!!
The vertices of a quadrilateral in the coordinate plane are known. How can the perimeter of the figure be found?
A) Use the distance formula to find the length of each side, and then add the lengths.
B) Use the slope formula to find the slope of each side, and then determine if the opposite sides are parallel.
C) Use the slope formula to find the slope of each side, and then determine if the consecutive sides are perpendicular.
D) Use the distance formula to find the length of the sides, and then multiply two of the side lengths.
A) Use the distance formula to find the length of each side, and then add the lengths.
Joe drove for 5 hours and traveled a distance of 240 miles . Which is best estimate of the number of miles Joe will travel in 7.2 hours.
a. 400
b. 375
c. 350
d. 325
Answer:
c,because he drove 48 miles per hour multiply that by 7.2 get you 345.6 rounded to 350.
Step-by-step explanation:
What is the solution to the system below? x + 5y = 4
x - 5y = -16
(6,-2)
(2,-6)
(-6,2)
(-2,6)
Answer:
(-6,2) third option is correct
Step-by-step explanation:
x+5y=4 equation1
x-5y=-16 equation 2
by adding both equations we got
2x=-12
x=-6
now put x=-6 in any of the equation to get y...
-6+5y=4 equation 1
5y=4+6
5y=10
y=10/5
y=2
(-6,2)
Answer:
(-6, 2)
Step-by-step explanation:
Put (-6, 2) into eq1 and eq2
1. (-6) +5(2)= -6 +10 =4
2.(-6) - 5(2)= -6-10 = -16
only one that works is (-6, 2)
Heather has a thin piece of wood that measures 14 inches long by 13 inches wide. She wants to make a box with a height of 3 inches. Heather says that she has enough wood to make a box that has bases measuring 6.5 inches by 6.5 inches. Do you agree?
Answer:
Yes, I agree. Since the area of the piece of wood is greater than the area of the box she wants to make, then she has enough wood to make the box.
Step-by-step explanation:
First, we will calculate the area of the piece of wood Heather has
Area (A) = Length (l) × Width (w)
From the question, l = 14 inches and w = 13 inches
A = 14 inches × 13 inches
A = 182 squares inches
Hence, the area of the piece of wood is 182 square inches
Now, we will calculate the total surface area of the box she desires to make
Area (A) of a box is given by
A = 2lw + 2lh + 2wh
Where l is the length
w is the width and
h is the height
She wants to make a box with a height of 3 inches and bases measuring 6.5 inches by 6.5 inches.
i.e h = 3 inches, l = 6.5 inches and w = 6.5 inches
∴ A = 2(6.5×6.5) + 2(6.5×3) + 2(6.5×3)
A = 84.5 + 39 + 39
A = 162.5 square inches
Hence, the area of the box she wants to make is 162.5 square inches
Since the area of the piece of wood is greater than the area of the box she wants to make, then she has enough wood to make the box.
Answer:
Yes
Step-by-step explanation:
help ! do you know the answer to this?
Answer:
Step-by-step explanation:
9t = 9 We can't see the entire image, but I assume 9 and the number of ts are of the same length. If this assumption is incorrect, please leave a note.
(09.01)
Choose the equation below whose axis of symmetry is x = 2. (1 point)
O y=x²-2
O y = x2 - 4x + 2
O y = x2 + 4x + 2
O y=x²-4
Answer:
y = x2 - 4x + 2 ; y=x²-4
Step-by-step explanation:
Axis of symmetry = - b /2a
y=x²-2
a = 1 ; b = - 2
x = - (-2) / 2(1)
x = 2/2 = 1
y = x2 - 4x + 2
a = 1 ; b = - 4
x = - (-4) / 2(1)
x = 4/2 = 2
y = x2 + 4x + 2
a = 1 ; b = 4
x = - 4 / 2(1)
x = - 4/2 = - 2
y=x²-4
a = 1 ; b = - 4
x = - (-4) / 2(1)
x = 4/2 = 2
Answer:
y = x2 - 4x + 2 ; y=x²-4
Step-by-step explanation:
PLS PLS PLS HELP I will mark brainliest
Answer:
the volume of the green cube is 864 cubic inches the volume of the blue cube is 1440 cubic inches
Step-by-step explanation:
the volume of the green cube is 864 cubic inches the volume of the blue cube is 1440 cubic inches
Which of the following is the concept illustrated with the misentered data? A. The procedure for constructing the confidence interval is robust. The larger the sample size, the more resistant the mean. Therefore, the confidence interval is less robust. B. The procedure for constructing the confidence interval is robust. The larger the sample size, the more resistant the mean. Therefore, the confidence interval is more robust. C. The procedure for constructing the confidence interval is not robust. The smaller the sample size, the less resistant the mean. Therefore, the confidence interval is more robust.
Answer: B. The procedure for constructing the confidence interval is robust. The larger the sample size, the more resistant the mean. Therefore, the confidence interval is more robust.
Step-by-step explanation:
Large sized data samples usually have more stability than data with small samples, they yield a mean value which edges closer to the value of the population data. This means that large size data samples will have a mean which is more resistant to change than samples with a lower sample size. The confidence interval gives robustness while constructing a model by giving te leverage for a range of values based in a certain level of confidence upon which a statistical vale can be tested for validity.
look at picture attack
Answer:
its 6.1
Step-by-step explanation:
so we use this formula to find it 950=4/3×3.14×r^3
Answer:
b. Radius is 6.1cm.
Step-by-step explanation:
R=(3xV/4π)^⅓
R=(3x950/4π)^⅓≈6.09834
R= 6.1cm
Evaluate 6ab when a=1/2
and b = 7.
Answer:
21
Step-by-step explanation:
6 x 1/2 = 3
3 x 7 = 21
PLSS HELP!! NO LINKS!!
The graph below represents results of a survey in which students stated the number
of minutes they'd spent watching TV the previous day.
What was the least amount of time a student in this class could have spent watching tv that day?
The required least amount of time a student in the class could have spent watching tv that day is 0-29 minutes
The graph is a demonstration of curves that gives the relationship between the x and y-axis.
Here,
in the bar graph, represents the results of a survey in which students stated the number of minutes they'd spent watching TV the previous day.
The least amount of time is shown by the first bar and which is 0-29 minutes.
Thus, the required least amount of time a student in the class could have spent watching tv that day is 0-29 minutes
Learn more about graphs here:
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Gerald deposited $950 into two different accounts.
- He deposited $450 into an account that pays 4.5% interest compounded annually.
- He deposited $500 into an account that pays 4.25% simple interest.
If Gerald does not deposit additional money into the accounts and he doesn't withdraw any money from the accounts, which is closest to the amount of interest he will have earned in these accounts at the end of 4 years?
A. $1,121.63
B.$177.20
C.$171.63
D.$1,116.00
Answer:
C
Step-by-step explanation:
The interest is 166.52.
Help asap, need help on this math problem. Solve for x
Answer:
c. 25
Step-by-step explanation:
According to the intersecting chords theorem, the product of the segments of a chord equals the product of the segments of the other chord it intercepts.
Thus:
3*x = 5*15
3x = 75
x = 75/3
x = 25
Determine the intercepts of the line
Answer:
x-intercept (3;3)
y-intercept (0;-10)
Help Me! Will give brainliest. Hurry UP!
11-2m-[n+5+-m-3n+8
Simplify!
Awnsers:
m - 2n - 2
-m + 2n - 2
-3m - 4n + 14
3m - 4n + 14
Step-by-step explanation:
11-5-8-2m+m-n+3n
= -2-m+2n Answer
just change in order otherwise answer is correct you can correct....
Two names for the angle formed by the dashed rays are? (I have to put down 3 letters)
Answer:
ZGK and DGS
Step-by-step explanation: