Answer:
188.52cm^2
Step-by-step explanation:
Given data
Height= 7cm
Radius= 3cm
The expression for the surface area of a cylinder is given as
Surface area= 2πr (h + r)
Surface area= 2*π*3 (7 + 3)
Surface area = 6π (10)
Surface area= 60*3.142
Surface area= 188.52cm^2
Hence the surface area is 188.52cm^2
what is the correct answer
Step-by-step explanation:
you tu tubless
ar vi ing
..............
how many groups of 15 minutes are there in 1 3/4 hours
Answer:
7 groups
Step-by-step explanation:
1 hour = 60 minutes
3/4 of an hour = 3/4(60) = 45 minutes
therefore, 1 3/4 hours is 105 minutes
105 divided by 15 is 7
Find the range of the data.
The ages of kids playing at a park.
4, 1, 3, 9, 6, 3, 2, 4
Range: [?]
Answer:
8
Step-by-step explanation:
Range is found by taking the largest number and subtracting the smallest number
The largest number is 9
The smallest number is 1
9-1 =8
The range is 8
Answer:
8
Step-by-step explanation:
Range = highest value - lowest value
Range = 9 - 1
Range = 8
Please helpppppp 7th grade mathhh
Answer:
10 quarts
thank you
i think
easy question but need answer quick!!
Answer:
Step-by-step explanation:
Step 1: Find slope of Linear function A
[tex]slope = \frac{y_2 - y_1}{x_2-x_1} = \frac{-5--1}{-4--2} = \frac{-5 +1}{-4+2} = \frac{-4}{-2} = 2[/tex]
Step 2 : Find slope of B
Since they are perpendicular to each other, product of their slope = -1
That is,
[tex]m_A \times m_B = - 1\\2 \times m_B = -1\\\\slope, m_B = \frac{-1}{2}[/tex]
Given the function passes through (4, -6)
Equation of the linear function :
[tex]x_3 = 4 \ , \ y_3 = -6\\\\(y - y_3) = m_B (x - x_3)\\\\(y - -6) = -\frac{1}{2} (x - 4)\\\\y + 6 = -\frac{1}{2}x + 2\\\\y = -\frac{1}{2}x + 2 - 6 \\\\y = -\frac{1}{2}x -4[/tex]
Part B
Linear Function is parallel to B
Therefore the slope of B and slope of C are the same. And the equation will be of the form :
[tex]y = -\frac{1}{2} x + C[/tex]
Determine the domain of the following graph:
Answer:
-10<x<6
Step-by-step explanation:
Find where x starts and where x ends
Find the volume of a right circular cone that has a height of 20 ft and a base with a
radius of 9.1 ft. Round your answer to the nearest tenth of a cubic foot.
18/30
G
35 m
Find the value of x:
H
18 m
30 m
Answer:
21 is the answer
Step-by-step explanation:
from the figure it can be seen that
angle G = angle J
angle H = angle K and
angle I = angle L
thus triangle GHI is similar to triangle JKL and in 2 similar triangles the ratio of their corresponding sides is same. that means
[tex] \frac{hi}{kl} = \frac{gi}{jl} \\ \frac{18}{30} = \frac{x}{35} \\ x = \frac{18}{30} \times 35 \\ x = \frac{3}{5} \times 35 \\ x = 3 \times 7 \\ x = 21[/tex]
What is the multiplicative rate of change of the function?
2/3
3/4
4/3
3/2
Answer: 3/4
Step-by-step explanation:
Did the test
The required multiplicative rate in the given function is 3 / 4. Option B is correct.
The function which is in format f(x) =a^x where a is constant and x is variable, the domain of this exponential function lies (-∞, ∞).
Here,
From the table of the exponential functions,
The multiplicative factor is given as,
K = y₂/y₁
K = [9 / 8] / [3/2]
K = 3 / 4
Thus, the required multiplicative rate in the given function is 3 / 4. Option B is correct.
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Jessie made 312 energy bars. She puts 24 bars in each bag. She plans to sell the bags for $6 each. How much will she earn if she sells all of the bags? Will give brainliest.
Answer:
she will make 78 dollars
Step-by-step explanation:
312 divided by 24 is `13
13 times 6 is 78
PLEASE HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
Answer:
63/10, 6.396, 6.99, 7 4/11
Step-by-step explanation:
Convert all to fraction or decimal
will give brainliest to correct answer
Answer:
A = 5
B = -13
C = 7
Step-by-step explanation:
The general formula of quadratic equation is ax^2+bx+c.
PLEASE HELP! What is the value of a?
A 12
B. 15
C. 17:25
D. 21.25
i think b. not sure sorry if im wrong
Im so confused so PLS HHELP !!!!!! ;-;
Answer:
Step-by-step explanation:
let -2/3 be the rational number and 9 be the positive real number
according to the given of indices this tis can be written as
[tex]9^{-2/3}[/tex]
[tex](3)^{2*-2/3}[/tex]
[tex]3^{-4/3}[/tex]
1/3^4/3
Helppppppppp meeeeee
Answer:
y=-1
Step-by-step explanation:
y=-1 just shows the y value which means its just a horizontal line which is parallel to the x axis.
A researcher wanted to know if there was a difference in fall and spring semester tuition at universities across the U.S. His study took a random sample of 200 universities, had a p-value of 0.013 and found that the tuition had increased by an average of $0.35 between fall and spring semester. What can be said about the results of this study
Answer:
The given parameters of the study are;
The number of people in the sample, n = 200
The p-value = 0.013
The average increase between fall and spring semester = $0.35
Therefore, we have;
Given that the p-value is less than 0.05, we reject the null hypothesis, and that there is significant statistical evidence to suggest that there is a difference between the fall and spring semester tuition at universities across the U.S.
Step-by-step explanation:
The result of the test hypothesis is incorrect or should be rejected.
What is P-value?Researchers frequently use P-values to determine if a trend they've seen is statistically significant. The p-value of a statistical test is small enough to reject the null hypothesis of the test, which is referred to as statistical significance.
What is the significance of the P-value?The likelihood that the null hypothesis is true is P > 0.05. The likelihood that the alternative hypothesis is correct is (1-P) the P-value. The test hypothesis is incorrect or should be rejected if the test result is statistically significant (P≤0.05). There was no effect if the P-value was bigger than 0.05.
We reject the null hypothesis since the p-value is less than 0.05, and there is strong statistical evidence to imply that there is a difference between autumn and spring semester tuition at institutions across the United States.
Hence, the result of the test hypothesis is incorrect or should be rejected.
Learn more about P-Value:
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help plssss! i’m rly struggling in geometry
Answer:
i don't know
Step-by-step explanation:
fffgg
Here are some cards with angles written on them.
45°
165°
5°
90°
102°
31°
53°
Moira picks one of the cards at random.
What is the probability that the angle on the card is greater than 100°?
the answer is 165 I think because I didn't understand the question
Which expression has the largest value? Each has as a factor. A 92 × 38\ \ \frac{9}{2}\ \times\ \frac{3}{8} 2 9 × 8 3 B 1089 × 38\frac{10}{89}\ \times\ \frac{3}{8} 89 10 × 8 3 C 123 × 381\frac{2}{3}\ \times\ \frac{3}{8}1 3 2 × 8 3 D 278 × 382\frac{7}{8}\ \times\ \frac{3}{8}2 8 7 × 8 3
Answer:
if your in high school why you need the answer
Step-by-step explanation:
t f
hi i am a boy that does math at school
|7|
What does this mean?
Absolute value of 7. Any real numbers in the absolute sign would equal to the positive value.
Definition
[tex] \large \boxed{ |x| = \begin{cases} x \: \: \: \: (x \geqslant 0) \\ - x \: \: \: \: (x < 0) \end{cases}}[/tex]
If we substitute x = 7 in. Answer by using the definition of absolute value. Note that we only substitute x = 7 in x and not -x since 7 is greater than 0 and not less than 0.
[tex] \large{ |7| = 7 \: \: \: \: (x \geqslant 0)}[/tex]
You may also be wondering what will happen if we substitute x = any negative numbers.
[tex] \large{ | - 7| = - ( - 7) \: \: \: \: (x < 0)} \\ \large \boxed{ | - 7| = 7}[/tex]
Because -7 is less than 0. We substitute in -x and not x. This is the definition of absolute value. But to understand it easily, any numbers in absolute value have to equal to their positive value.
Conclusion
|7| means the absolute value of 7.|7| is 7.|x| is x when x ≥ 0 but -x when x < 0Let me know if you have any doubts regarding the absolute value through comment!
4. 12 ½ % of a sum of money is $40. What is the sum of money?
Answer:
$320
Step-by-step explanation:
12.5 % is 40
12.5% is 8% of 100%
so do 40 x 8 = 320
What is the length of /AB?
Answer:
[tex]\sqrt{53}[/tex]
Step-by-step explanation:
Given right triangle ABC, which of the following statements must be true
Check all that apply.
A. sin A = Cos(90° - A)
B. cosA = sin C
C. ZA and ZC are supplementary
D. sin A = Cos(90°-C)
A + B are correct
via a p e x
The correct statements are A and B
What is a right-angled triangle?
'A triangle in which one of the interior angles is 90° is called a right-angled triangle. The longest side of the right triangle, which is also the side opposite the right angle, is the hypotenuse and the two arms of the right angle are the height and the base.'
According to the given problem,
cos(A−B) = cosAcosB + sinAsinB .
Let A=90∘, B = a
Therefore.
cos(90∘−a) = cos90∘cosa + sin90∘sina.
Here, we have,
cos90∘ = 0, sin90∘ = 1.
cos(90∘−a) = sina
Now, we know,
sin∅ = [tex]\frac{Perpendicular}{Hypotenuse}[/tex]
cos∅ = [tex]\frac{Base}{Hypotenuse}[/tex]
For ∠BAC,
cosA = [tex]\frac{AB}{AC}[/tex]
For ∠ACB,
sinC = [tex]\frac{AB}{AC}[/tex]
Hence, we can conclude, A and B are the true statements for the given right-angled triangle.
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Can U pls Help Me pls
Answer:
angle x= 60
so it is in the ratio 1:2:√3
√3x=3
ie.x=√3/3
adjacent side=x=√3/4
Step-by-step explanation:
everything can be found in the picture
!!!!!!!!!PLEASE HELP!!!!!!!!
Answer: D
Step-by-step explanation:
We're given a point (a,b) that happens to be on the unit circle, a²+b²=1, so a is the cosine of the angle θ and b is its sine.
Answer:
option 4
Step-by-step explanation:
Please helpppp i have a test tomorrow the problem is in the picture below
Answer:
yes
Step-by-step explanation:
What does 2x+4y=12 solve for?
Answer:
Hi, there for x it will be x=−2y+6
But if your solving for y it will be [tex]y=-\frac{1}{2}x+3[/tex]
Hope this Helps :)
Step-by-step explanation:
Let's solve for x.
2x+4y=12
Step 1: Add -4y to both sides.
2x+4y+−4y=12+−4y
2x=−4y+12
Step 2: Divide both sides by 2.
[tex]\frac{2x}{2}=\frac{-4y+12}{2}[/tex]
x=−2y+6
2.
Let's solve for y.
2x+4y=12
Step 1: Add -2x to both sides.
2x+4y+−2x=12+−2x
4y=−2x+12
Step 2: Divide both sides by 4
[tex]\frac{4y}{4} =\frac{-2x+12}{4}[/tex]
[tex]y=-\frac{1}{2} x+3[/tex]
Brainliest goes to whoever answers correctly and explains also if you want extra points answer my other questions
Answer:
1) y= 2x
for every 5 x-steps to the right the graph goes up by ten. 10/5 is simplified to 2/1 or just 2
it starts at 0/0, so no need to add and absolute value
2) x: number of days
y: number of vidits (roughly2 per day, but you don't need to write this in the box)
3) 35 days. it's just y=70
and we could write this as
70 = 2*x | devide by 2 on both sides to get x
35 = x
48 ÷ (7 x 5 - 3 x 9) whoever gets the answer right, gets brainliest and 47 points. please help fast!
48 ÷ (7 x 5 - 3 x 9)
= 48 ÷ (35 - 27)
= 48 ÷ 8
= 6
Step-by-step explanation:
only half of your points for each answer ;)
Answer: 6
Step-by-step explanation:
Because of PEMDAS, you do 7x5 which is 35 than 3x9 which is 27. Then you subtract those and get 8. After you finish what's in the parenthesis, you divide 48 by 8 which is 6.
F(x)= x^2 . What is g(x)?