Answer:
225. 7 lb
Step-by-step explanation:
615
1416
Isa finished 30% of his homework in 27 minutes. How many more minutes will it take Isa to complete his homework, assuming that he works at the same pace?
Answer:
90 Minutes
Step-by-step explanation:
If he took 27 minutes to do 30% of his homework, then we can reverse the operation to find the total amount
30% is the same as 0.3, therefore you divide 27 by 0.3 because the 100% is 1, so by dividing you'll get the 100%.
90 minutes
Step-by-step explanation:
So 27 = 30%
30% + 30% + 30% = 90%
27 + 27 + 27 = 81
30% ÷ 3 = 10%
27 ÷ 3 = 9
90% + 10% = 100%
81 + 9 = 90
I'm sorry if this is wrong I got kind of confused for a second. But I hope this at least helps.-FinnyExponential functions are in the form f(x)=a(b)x−h+k. What does a negative "a" value do the graphed equation?
Moves the equation "a" spaces right
Moves the equation "a" spaces right
Moves the equation "a" spaces left
Moves the equation "a" spaces left
The "a" value can't be negative
The "a" value can't be negative
Reflects the graph over the y-axis
Reflects the graph over the y-axis
Reflects the graph over the x-axis
please answer as soon as possible for brainlist
A student wants to know how many 1 cm cubes will fit into a 10cm by 8 cm 12 cm box.
What measure is the student trying to calculate?
A. Surface area
B. Height
C. Perimeter
D. Volume
D) Volume
Hope it helps you
Answer pls? A b or c ??
Answer:
Step-by-step explanation:
I am pretty sure the answer is b
Joseph attends a school that has 800 students. He is in charge of school dances this year. He surveyed a random sample of 100 students and got the following feede
.
of the students would attend any of the dances held at the school
of the students would like to have pizza served at the dances
10 of the students would attend a square dance
• 64% of the students think that the dances should be held after football games
• 18% of the students are not allowed to attend dances at school
Which THREE statements are supported by Joseph's data?
А
The dances will be attended by around 700 of the students that attend the school.
B
Joseph should plan for around 560 students at each dance based on the data.
OOOO
С
Out of the 800 students, 288 do not like to attend dances after the football games.
D
Out of 800 students, Joseph could expect around 480 students to attend a square dance.
Answer:
Step-by-step explanation:
its b
Find BC in ABC round to the nearest 10th
Answer:
Step-by-step explanation:
take 53 degree as reference angle
using tan rule
tan 53=opposite/adjacent
1.32=BC/18
1.32*18=BC
23.76=BC
23.8=BC
What are the solutions of this quadratic equation?
6x^2+6=12x+18
You have a piggy bank that contains 2 pennies, 4 nickels, 8 dimes, and 6 quarters. Find the probability of picking a coin worth more than 10 cents. .
Answer:
The probability is 3/10
Step-by-step explanation:
So a quarter is the only coin that’s worth more than 10¢ so 6/20 = 3/10
What is the answer Susie ,mark, same
Answer:
mark did cause it said mark rented his books everyday and it was represented on the table
dont answer if u dont know please!!
Answer:
Step-by-step explanation:
Silas took 17 bags of glass to the recycling center. He still has 8 bags of plastic to take to the recycling center. Which equation could
be used to find x, the total number of bags of glass and plastic Silas will take to the recycling center?
A.x-8=-17
B.17-x=8
C. X+17=8
D. X-17=8
someone pls help me solve this
2(10) + 2(x-4)
Brandon took a 50-question exam worth a total of 160 points. There were x two-point questions and y five-point questions.
Answer:
there were 20 two point questions =
there were 30 five point questions
Step-by-step explanation:
Brandon took a 50-question exam worth a total of 160 points. There were x two-point questions and y five-point questions. How many of each type of question were on the exam?
x + y = 50 eqn 1
2x + 5y = 160 eqn 2
this can be solved using simultaneous equation
multiply eqn 1 by 2
2x + 2y = 100 eqn 3
subtract eqn 3 from 2
3y = 60
y = 20
Substitute for y in eqn 1
x + 30 = 50
x = 20
Pl help it’s for a grade I will give Brainly if right
Answer:
I am pretty sure its 1.99
Step-by-step explanation:
12/10.99= ~1.09
24/25.99=~0.80
1.09+0.80=1.99
[tex]5x + 15 = 10x[/tex]
what is the value of x?
Answer:
x = 3
Step-by-step explanation:
5x + 15 = 10x
-5x -5x
15 = 5x
/5 /5
3 = x
A lampshade has a height of 12cm and upper and lower diameters of 10cm and 20cm A)what area of material is required to cover that curved surface of the frustum B)what is the volume of the frustum (Give both answers in terms of pie)
Answer:
[tex](a)\ Area = 195\pi[/tex]
[tex](b)\ Volume = 700\pi[/tex]
Step-by-step explanation:
Given
[tex]h = 12[/tex]
[tex]d_1 = 10[/tex] --- lower diameter
[tex]d_2 = 20[/tex] --- upper diameter
Solving (a): The curved surface area
This is calculated as:
[tex]Area = \pi l(r_1 + r_2)[/tex]
Where
[tex]r_1 = 0.5 * d_1 = 0.5 * 10 = 5[/tex] --- lower radius
[tex]r_2 = 0.5 * d_2 = 0.5 * 20 = 10[/tex] --- upper radius
And
[tex]l = \sqrt{h^2 + (r_1 - r_2)^2[/tex] ---- l represents the slant height of the frustrum
[tex]l = \sqrt{12^2 + (5 - 10)^2[/tex]
[tex]l = \sqrt{12^2 + (-5)^2[/tex]
[tex]l = \sqrt{144 + 25[/tex]
[tex]l = \sqrt{169[/tex]
[tex]l = 13[/tex]
So, we have:
[tex]Area = \pi l(r_1 + r_2)[/tex]
[tex]Area = \pi * 13(5 + 10)[/tex]
[tex]Area = \pi * 13(15)[/tex]
[tex]Area = 195\pi[/tex]
Solving (b): The volume
This is calculated as:
[tex]Volume = \frac{1}{3}\pi * h * (r_1^2 + r_2^2 + (r_1 * r_2))[/tex]
This gives:
[tex]Volume = \frac{1}{3}\pi * 12 * (5^2 + 10^2 + (5 * 10))[/tex]
[tex]Volume = \frac{1}{3}\pi * 12 * (25 + 100 + (50))[/tex]
[tex]Volume = \frac{1}{3}\pi * 12 * (175)[/tex]
[tex]Volume = \pi *4 * 175[/tex]
[tex]Volume = 700\pi[/tex]
Whoever answers correctly gets brainliest also write the numbers down
Answer:
Jacob
Brennan
Adrienne
Valerie
Step-by-step explanation:
Positive and nonlinear follows the first one so that's Jacob's
clustering is in the fourth one so that's Valerie's
2 and 3 have an outlier so look at next one
negative and linear is the third one so that is Adrienne's and the second one is Brennan's
What is the radius?
Find the length of the radius of the circle with an equation of
(x + 3)2 + (y-7)2 = 289.
Answer:
Radius = 17.
Step-by-step explanation:
If(h,k) is centre and rradius, the eqn. of circle is :(−x h)2+(y−k)2=r2
Comparing with the given eqn. of circle, we find, r2=289 Hence, radius is 17
What is the exponential regression equation that fits these data? y x 1 4 2 8 3 27 4 85 5 250 6 600
A. y= 41.32x2 - 181.7x+ 171.6
B. y = 2.84(1.22%)
C. y = 1.22(2.84%)
D. y = 107.54x - 214.06
Answer:
its is C because the other ones are obvious wrong. So it has to be C plus i did this test.
Step-by-step explanation:
The exponential regression equation that fits the given data is [tex]y = 0.755 * e^{(0.071 * x)}[/tex]
What is a logarithmic function?The opposite of an exponential function is a logarithmic function. A log function and an exponential function both use the same base. An exponent is a logarithm. f(x) = bx is how the exponential function is expressed. The formula for the logarithmic function is f(x) = log base b of x.
Using the first and last data points (4,1) and (600,6), we can set up a system of two equations in two unknowns:
ln(y) = ln(a) + b * x1
ln(y') = ln(a) + b * x2
where x = 4, y = 1, x' = 600, and y' = 6. Taking the difference between the two equations, we get:
ln(y'/y) = b * (x' - x)
Solving for b, we get:
b = (1/(x' - x)) * ln(y'/y)
Substituting the values, we get:
b = (1/(600-4)) * ln(6/1)
b = 0.071
To find ln(a), we can use either of the two equations with the known values of ln(y) and b. Using the first equation, we get:
ln(y) = ln(a) + b * x
Substituting the values, we get:
ln(1) = ln(a) + 0.071 * 4
ln(a) = -0.279
Now that we have the values of ln(a) and b, we can convert them back to the exponential equation:
ln(y) = -0.279 + 0.071 * x
y = e^(-0.279) * e^(0.071 * x)
y = 0.755 * e^(0.071 * x)
This is the exponential regression equation that fits the given data.
Learn more about logarithmic functions here:
https://brainly.com/question/3181916
#SPJ2
Two similar cylinders have radii of 15 inches and 6 inches. What is the ratio of the surface area of the small cylinder to the surface area of the large cylinder.
Answer:
4:25
Step-by-step explanation:
Given that,
r₁ = 15 inches, r₂ = 6 inches
The area of the cylinder is given by :
[tex]A=2\pi rh+2\pi r^2[/tex]
The ratio of surface areas of two cylinders,
[tex]\dfrac{S_2}{S_1}=\dfrac{2\pi r_2h_2+2\pi r_2^2}{2\pi r_1h_1+2\pi r_1^2}\\\\\dfrac{S_2}{S_1}=(\dfrac{r_2}{r_1})^2\\\\=\dfrac{6}{15}^2\\\\=\dfrac{4}{25}[/tex]
Hence, the required ratio is 4:25.
A bag contains 5 red marbles, 3 blue marbles and 6 green marbles. If two marbles are drawn out of the bag, what is the exact probability that both marbles drawn will be green?
Answer:
15/91
Step-by-step explanation:
P(G,G) = 6/14 x 5/13 = 15/91
Do i need to flip my sign? -3x ≥ 12
Answer:
yes because 3 is in - and it is less than 0
Answer:
Yes
Step-by-step explanation:
-3x ≥ 12
Divide both sides by -3
When multiplying or dividing by a negative the inequality must be reversed
x ≤ -4
With the given volume of 294 π, what is the radius?
Hight given = 18
Answer:
[tex]\displaystyle r = 7[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of EqualityGeometry
Volume of a Cone Formula: [tex]\displaystyle V = \frac{\pi}{3} r^2h[/tex]
r is radiush is heightStep-by-step explanation:
Step 1: Define
Identify variables
V = 294π
h = 18
Step 2: Solve for r
Substitute in variables [Volume of a Cone Formula]: [tex]\displaystyle 294 \pi = \frac{\pi}{3} r^2(18)[/tex]Multiply: [tex]\displaystyle 294 \pi = 6 \pi r^2[/tex][Division Property of Equality] Divide 6π on both sides: [tex]\displaystyle 49 = r^2[/tex][Equality Property] Square root both sides: [tex]\displaystyle 7 = r[/tex]Rewrite: [tex]\displaystyle r = 7[/tex]I need help rn !! Please help me and explain
Answer:
A
Step-by-step explanation:
I=PRN
=4500×(4.75/100)×3
=$641.25
I need help please help me!!!
Answer:
-15
Step-by-step explanation:
Multiplying 3 * -5 gives you -15
Answer:
-15
Step-by-step explanation:
divide by 3
you'll should get -15
PLEASE HELPPPP THE DROP DOWN MENUES ARE ALL THE SAME
Answer:
a) distributive property
b) combining like terms
c) commutative property of addition
Help??????????????????
Answer:
40
Step-by-step explanation:
52= 1/2(64 + x)
52 = 32 + 0.5x
52-32= 32-32 + .5x
20=.5x
Divide both sides by .5x
X = 40.
Help out please and thank you
Answer:
y=-1/4x+1
Step-by-step explanation:
Hi there!
We're given the point (-8,3) and a slope of -1/4
lines are typically written in the formula y=mx+b, where m is the slope and b is the y intercept
as we are already given the slope, we can substitute its value into the equation
substitute -1/4 as m
y=-1/4x+b
now we need to find b
as the equation passes through the point (-8,3),we can use it to solve for b
substitute -8 as x and 3 as y
3=-1/4(-8)+b
multiply
3=2+b
subtract 2 from both sides
1=b
substitute 1 as b
y=-1/4x+1
in a school ,the number of boys who play cricket is 3 times as much as a number of boys who play tennis. if 12 boys, who play cricket, play tennis instead, the number of boys who play each of these sports would be the same. find the number of boys who play tennis
Answer:
The number of boys who play tennis is 36.
Step-by-step explanation:
Let the number of boys who play tennis is x.
number of boys who play cricket = y
x = 3 y..... (1)
12 boys plays both cricket and tennis.
According to the question,
x - 12 = y + 1 2
3 y - 12 = y + 12
2 y = 24
y = 12
So, the number of boys who plays tennis is x = 3 x 12 = 36.
What is the answer for ½+¼⅝ What is the answer for ½+¼⅝ What is the answer for ½+¼⅝ What is the answer for ½+¼⅝
Answer:
1 3/8
Step-by-step explanation:
We are to add 1/2 + 1/4 + 5/8
[tex]\frac{1}{2} + \frac{1}{4} + \frac{5}{8}[/tex]
[tex]\frac{4 + 2 + 5}{8}[/tex] = 11/8 = 1 3/8
Answer: 1 3/8
Step-by-step explanation: