what is the answer to 7(2x + 9)
Answer:
14x + 63
Step-by-step explanation:
[tex]7(2x+9)\\\\14x+63\\\\\left \{ {{7*2x=14x} \atop {7*9=63}} \right.[/tex]
Hope this helps.
The radius of a circle is 9 m. Find its circumference in terms of pi.
Answer:
56.52m
Step-by-step explanation:
This is because pie is commonly substitued as 3.14 and since the formula of a cicumference is piRx2 it would be 56.52
The circumference of the circle is 18π meters.
What is a circle?A circle is a two-dimensional figure with a radius and circumference of 2πr.
The area of a circle is πr².
We have,
The circumference of a circle can be found using the formula:
C = 2πr
where r is the circle's radius and π (pi) is a mathematical constant approximately equal to 3.14159.
Substituting r = 9 m into the formula, we get:
C = 2π × 9
C = 18π m
Therefore,
The circumference of the circle is 18π meters.
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Select the correct answer.
The length of a rectangle is units greater than twice its width. If its width is w, which expression gives the perimeter of the rectangle in terms of w?
A.
2(w) + w
B.
w + w
C.
3w +
D.
6w + 5
The expression which shows the perimeter in terms of w is option d which is 6w+5.
What is expression?Expression is a combination of numbers, fraction, symbols, indeterminants, determinants,etc. It shows a relationship between two or more variables. It is mostly not found in equal to form.
How to find perimeter?We have been given that width be w, so the length will be 2w+5/2.
We know that perimeter of rectangle is 2(l+b)
Perimeter=2(2w+5/2+w)
=2(3w+5/2)
=2(6w+5)/2
=6w+5
Hence the the expression which shows the perimeter of rectangle having width w and length is 5/2 units greater than double the width in terms of w is option d which is 6w+5.
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Question is incomplete as it should includes the length eing 5/2 units greater than double the width.
1. Sketch the graph of f(x) = 3* and describe the end behavior of the graph.
id
X
8
6
-2
4
-1
I
2
0
-10-9-8-7 -6 -5 -4 -3 -2 -1 10
0
2.
3 4 5 6 7 8 9 10
o
-2
1
-4
2.
-6
-8
I don't understand this, what's the answer?
Chloe purchased a sweater that cost $24 and a shirt cost 5-8 times as much as the sweater what amount of change did she receive from clerk $50
Answer:
The answer is "$11".
Step-by-step explanation:
Chloe bought a pull, which costs [tex]\$24[/tex], and a shirt which costs [tex]\frac{5}{8}[/tex] times as much as the pullout.
Sweater cost = [tex]\$24[/tex]
Shirt cost [tex]= \frac{5}{8} \times 24=15[/tex]
Therefore, total shirt and sweater costs[tex]= 24+15=39[/tex].
Then she gave [tex]\$ 50[/tex] to her officer.
Thus, she got changes [tex]= 50-39=11[/tex]
therefore, Chloe received a change of 11 dollars if she gave her employer [tex]\$50[/tex].
At the craft store, Amelia bought a bag of purple and yellow marbles. She received 75 marbles in all. 15 of the marbles were purple. What percentage of the marbles were purple?
Answer: 20%
Step-by-step explanation:
Given
Total marbles are 75
Out of this 15 are purple
Percentage of purple marbles is given by
[tex]\Rightarrow \dfrac{15}{75}\times 100=20\%[/tex]
So, purple marble constitutes of 20%
Sale
50% OFF!
What is the sale price of a gold necklace originally priced at $40?
Answer:
$20
HOPE THIS HELPS
-Todo <3
Step-by-step explanation:
40/2=20
I just need help with math :/
Answer:
Step-by-step explanation:
the answer is B
Please look at the picture and answer my question I need help!
Answer:
64oz=4lb
Step-by-step explanation:
When converting ounces to pounds there is a 16:1 ratio, or there is 16 ounces in every pound.
To solve this, simply do 64/16 and you'll get your answer of 64oz=4lb.
64/16=4
64oz=4lb
In a random sample, 3 of 400 computer chips are defective. Based on
the sample, how many chips out of 100,000 would you expect to be
defective?
Answer:
750 of 100,000 chips would be expected to be defective.
Step-by-step explanation:
(3/400) and (?/100,000)
100,000 ÷ 400 = 250.
Multiply 250 by 3 to find the number of defective chips.
250 x 3 = 750.
The local movie theater charges $13 for adult tickets and $7 for children’s tickets. Yesterday they sold 115 tickets and made $943. How many adult and children tickets did they sell?
Answer:
i need more info
Step-by-step explanation:
The equation shown has an unknown number ⍰÷3/4=4/9
Answer:
9
Step-by-step explanation:
Is parallelogram BCDE a rectangle?
factorise -21t²+12t+33
Answer:
3(−7t+11)+(t+1)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Explanation:
~ Combine like terms
~ Like terms have the same variables
−21t^2 + 12t + 33
= 3(−7t + 11) + (t+1)
Which gives you your answer.
Your adding these/Polynomial
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Leme know if im wrong. Math isnt my forte.
GL.
Which of the following correctly completes the square for: x^2+2x=48
A. (x+2)^2=52
B. (x+1)^2=49
C. (x+2)^2=47
D. (X-1)^2=26
Answer:
(x+1)²= 49, the answer is B
Step-by-step explanation:
x² + 2x = 48
x² + 2x + (2/2)² - (2/2)²= 48 --[what we are trying to do is to complete a square by adding (2/2)² - (2/2)²]
(x+1)²= 49, the answer is B
Answer:
hey I'm pretty sure it's B. (x+2)²=49
Step-by-step explanation:
x²+2x+(2\2)²=48 + (2\2)²
(x+1)²=49
2 over 2 by the power of 2 = 1
How many solutions does the system of equations 5x−4y=8 and 5x−4y=2 have?
A)no solutions
B)1 solution
C)2 solutions
D)an infinite number of solutions
Answer:
1 solution. y= 5/4x - 1/2
What is:
(s+12)+(3s-8)
simplified?
Answer:
4s+4
Step-by-step explanation:
I hoped this helped :)
A 25,000 gallon swimming pool is being filled. Two hundred and fifty gallons are in it after 30 minutes. How many hours will it to take to fill the pool?
Answer: 50 hours
Step-by-step explanation:
Given
The volume of a swimming pool is [tex]25,000[/tex] gallon
It takes 30 minutes to fill [tex]250\ \text{gallons}[/tex]
Using Unitary method
[tex]\Rightarrow 250\ \text{gallon takes}\rightarrow 30\ \text{minutes}\\\Rightarrow 1\ \text{gallon takes}\rightarrow \dfrac{30}{250}\\\\\Rightarrow 25,000\ \text{gallon}\rightarrow \dfrac{30}{250}\times 25,000=3000\ \text{minutes or 50 hours}[/tex]
What type of angle is ∠1?
obtuse
right
acute
straight
Answer:
acute angle
Step-by-step explanation:
acute angle because it is under 90°
If the angle measure is less than 90 degrees then it's acute, if it is equal to 90 degrees it's right or square, if it's more than 90 degrees it's obtuse, and if it's equal to 180 degrees it's a straight angle but in this case it's straight and obtuse since 180 is greater than 90.
[AB] is a diameter of center C(O, 3cm). M is a point on (C) such that MA=MB. D is the symmetric of A with respect to M.
What is the nature of triangle AMB? Justify.
Answer: I dont know AZ
A couple decides to keep having children until they have a girl, at which point they will stop having children. They also agree to having a maximum of three children. The table below shows the probability distribution of X=, equals the number of children such a couple would have.
X=# of children 1 2 3
P(X), .5 .25 .25
Given that \mu_X=1.75μ
X
=1.75mu, start subscript, X, end subscript, equals, 1, point, 75 children, find the standard deviation of the children such a couple would have.
Round your answer to two decimal places.
\sigma_X\approxσ
X
≈sigma, start subscript, X, end subscript, approximately equals
children
Answer:.83
Step-by-step explanation:
Khan academy
From the discrete distribution given, the standard deviation is of 0.83 children.
The distribution is:
[tex]P(X = 1) = 0.5[/tex]
[tex]P(X = 2) = 0.25[/tex]
[tex]P(X = 3) = 0.25[/tex]
The mean is 1.75.The standard deviation is the square root of the sum of the difference squared between each value and the mean, multiplied by it's respective probability.Hence:
[tex]\sqrt{V(X)} = \sqrt{0.5(1 - 1.75)^2 + 0.25(2 - 1.75)^2 + 0.25(3 - 1.75)^2} = 0.83[/tex]
The standard deviation is of 0.83 children.
A similar problem is given at https://brainly.com/question/24188569
((will give brainliest)) What is the output of the function y = 12 + 3x if the input is 5.
Answer:
y = 27
Step-by-step explanation:
The output is the value of y when x = 5
Substitute x = 5 into the function , that is
y = 12 + 3(5) = 12 + 15 = 27 ← output
6/7x21 please help i need this to finish early
Answer:
6/7 x 21 = 18
Answer:
the answer is 18 hope this helped :)))
How many real fifth roots does -0.00243 have?
Answer:
I get 3 so i don't know
Step-by-step explanation:
Find two integers whose sum is -20 and product is 99
Answer:
Step-by-step explanation:
let the integers be x and y
x+y=-20
y=-20-x
xy=99
x(-20-x)=99
-20x-x²=99
x²+20x+99=0
x²+11x+9x+99=0
x(x+11)+9(x+11)=0
(x+11)(x+9)=0
x=-11,-9
when x=-11
-11+y=-20
y=-20=11=-9
when x=-9
-9+y=-20
y=-20+9=-11
so integers are -11,-9
x/-3 = -7
What is x?
Please explain
Answer: x=21
Step-by-step explanation:
x/-3=-7
Take -3 and multiply it on each side to cancel it out from the left
x=21
Answer:
i think its 21
Step-by-step explanation:
-3x x/3 =-7 x -3 = 21
Please help this is algebra graphing
Analyze: 30 + 11 when c=4
Answer:
23
Step-by-step explanation:
3c + 11
3(4) + 11
12 + 11
23
Find 2.64 / 0.6 step by step
Answer: 4.6
Step-by-step explanation: