Answers
[tex]0.3x=12 \\ \\ x = 40[/tex].
The answer is 40.
9) 45% of 20 is [tex]0.45(20)=9[/tex].
The answer is 9.
10) 18 is [tex](18/30 = 60)[/tex]% of 30.
The answer is 60%.
11) 56 is 80% of some number x. We write
[tex]0.8x=56 \\ \\ x = 70[/tex].
The answer is 70.
12) If the total cost on an item that costs $4.00 is $4.32, then the tax is 32¢. We want to find the percent of the total 4 that is .32. [tex] \frac{0.32}{4} = 0.08=8[/tex]%.
The answer is 8%.
Related Questions
I have a math Brainliest reward
Answers
2. is gonna be D. a special endorsement is when someone has insufficient funds but it isn't there fault and will lead into giving there money BACK that was lost( this is one of the reasons the country is in dept.
3. is gonna be A. When you take the amount of money you have in your account and you go over that limit then you will be 1.Charged for overdrawing and 2. Your card will be frozen.
4. is gonna be D. You will have the right to change how much you can spend a day. (minimum balance)
Jane bought 10 pears and 11 oranges for $10.05 the total cost of one pear and one orange was $0.94 how much did 1 pear and 1 orange cost
Please Send Help
Answers
If 10 pears and 11 oranges cost 10.05 and the total cost of 1 pear and 1 orange is 0.94, then they should cost 0.47 cents each:
0.47 + 0.47 = 0.94
0.94 divided by 2 = 0.47
Hope this helps you.
Have a great day!
The cost of one pear and one orange is $0.94.
Explanation:To find the cost of one pear and one orange, we need to set up an equation. Let's let x be the cost of one pear and y be the cost of one orange. We can set up two equations based on the given information:
10x + 11y = 10.05 (equation 1)x + y = 0.94 (equation 2)We can solve this system of equations by substitution or elimination. Let's use the substitution method. From equation 2, solve for x in terms of y:
x = 0.94 - y
Substitute this expression for x into equation 1:
10(0.94 - y) + 11y = 10.05
Distribute and simplify:
9.4 - 10y + 11y = 10.05
Combine like terms:
9.4 + y = 10.05
Subtract 9.4 from both sides:
y = 10.05 - 9.4
y = 0.65
Now substitute the value of y back into equation 2 to find x:
x + 0.65 = 0.94
Subtract 0.65 from both sides:
x = 0.94 - 0.65
x = 0.29
Therefore, the cost of one pear and one orange is $0.29 + $0.65 = $0.94.
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What is the value of p?
A. 45
B. 35
C. 55
D. 125
wouldn’t it be 35?
Answers
Answer:
35
Step-by-step explanation:
(sorry for bad image. I use OperaGX)
A rugby player passes the ball 7.75 m across the field, where it is caught at the same height as it left his hand. At what angle was the ball thrown if its initial speed was 12.0 m/s, assuming that the smaller of the two possible angles was used?
Answers
(a)(b)range x=V²sin (2θ)/g
7.75m=(12 m/s)sin (2θ)/ 9.8m/s²
sin (2θ)=0.5274
hence:
2θ=arcsin 0.5274=31.83°
or 2θ=180-31.83=148.17°
hence the smaller angle will be:
31.83/2=15.915~15.92°
and the larger angle will be:
148.17/2=74.085°
The smaller of the two possible angles used is;
θ = 15.92°.
We are given;
Range of pass; R = 7.75 m
Speed; u = 12 m/s
Formula for range is;
R = [u²sin (2θ)]/g
Where; θ is the angle at which the ball was thrown.
Thus;
7.75 = 12² × (sin(2θ))/9.8
(sin(2θ)) = (7.75 × 9.8)/12²
(sin(2θ)) = 0.5274
2θ = sin^(0.5274)
2θ = 31.83
θ = 31.83/2
θ = 15.92°
Now, if we assume that this angle is to the vertical, it means the angle to the horizontal is;
90 - 15.92 = 74.08°
In conclusion, the two possible angles are 15.92° and 74.08°.
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Elizabeth has two gardens in her yard. The first garden is 8 feet long and 6 feet wide. The second garden is half the length of the first garden. the area of the second garden is twice the area of the first garden. What is the area of the second garden?
Answers
Answer:
the answer is B: 128 divided by 8 equals 16
Step-by-step explanation:I know this becasue to check ur answer after doing multiplication you must do division
multiplication-->division
division-->multiplication
subtraction-->addition
addition-->subtraction
Question 8 (06.02 LC)
Which statement best describes the expression 2y ÷ 7?
A. 2 times y divided by 7
B. 7 divided by 2 times y
C. 7 times y divided by 2
D. 2 divided by 7 times y
Question 9 (06.06 LC)
Which algebraic property is used to rewrite 2(x + 3) as 2x + 6?
A. Distributive property
B. Associative property
C. Commutative property of addition
D. Commutative property of multiplication
Question 10 (06.02 LC)
Which of these is the algebraic expression for "5 times the sum of 2 and y?"
A. 5 ⋅ 2 + y
B. 2 + 5 ⋅ y
C. 2(5 + y)
D. 5(2 + y)
Answers
The best answer would be A, two times y divided by 7.
Question 9.
The distributive property. Or A.
Question 10.
5(2+y) would be the answer. So, D.
Hope this helps!
Answer:
A
Step-by-step explanation:
Please help!! I’ll mark you as brainliest
Answers
Which of the following statements best describes the graph of x + y = 4?
It is a line which intersects the x-axis at (4, 4).
It is a line which intersects the y-axis at (4, 4).
It is a line joining the points whose x- and y-coordinates add up to 8.
It is a line joining the points whose x- and y-coordinates add up to 4.
Answers
For the first one the y intercept is when x = 0. The point would be 0,4
The second one gives a point of (4,0)
The third one is nonsense. (4,4) is not on this line.
What is the recursive rule for the sequence? −7.4, −21.2, −35, −48.8, −62.6
Answers
Answer:
[tex]a_n = a_{n-1}-13.8[/tex]
Step-by-step explanation:
The recursive rule for the arithmetic sequence is given by:
[tex]a_n = a_{n-1}+d[/tex] .....[1]
where, d is the common difference of two consecutive terms.
Given the sequence:
−7.4, −21.2, −35, −48.8, −62.6
This is an arithmetic sequence
Here, first term[tex](a_1)[/tex] = -7.4 and d = -13.8
Since,
-21.2+7.4 = -13.8,
-35+21.2 = -13.8 ans so on...
Substitute the given value in [1] we have;
[tex]a_n = a_{n-1}+(-13.8)[/tex]
⇒[tex]a_n = a_{n-1}-13.8[/tex]
Therefore, the recursive rule for the sequence is, [tex]a_n = a_{n-1}-13.8[/tex] and [tex]a_1[/tex]= -7.4
The recursive rule for the sequence is [tex]\rm a_{n} = a_{n-1} -13.8[/tex] and [tex]\rm a_{1}[/tex] = -7.4.
What is the recursive rule?The recursive rule refers to the first term of the sequence and describe
the relation to the preceding term with the recursive equation.
The recursive formula for the arithmetic sequence is as follows
[tex]\rm a_{n} = a_{n-1} + d[/tex]
where [tex]\rm a_{n}[/tex] is the nth term and d is a common difference
The arithmetic sequence is given as
−7.4, −21.2, −35, −48.8, −62.6
[tex]\rm a_{1}[/tex] = -7.4 (first term)
d = -21.2+7.4 = -13.8,
d = -35+21.2 = -13.8
Substitute the given value, we get
[tex]\rm a_{n} = a_{n-1} + d[/tex]
[tex]\rm a_{n} = a_{n-1} -13.8[/tex]
Hence, the recursive rule for the sequence is [tex]\rm a_{n} = a_{n-1} -13.8[/tex] and [tex]\rm a_{1}[/tex] = -7.4.
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2. Given the equation 2x – 3y + 4z =12, find the three intercepts for this plane and graph it below. Show your work. Please view the video “how to submit a part 2” for help on how to graph. (2 point for each intercept, 3 for the graph.) Answer:
Answers
x-intercept:
To get x-intercept we let y=0 and z=0. The substitute these values in our equations follows:
2x+3(0)+4(0)=12
2x=12
hence:
x=12/2
x=6
therefore the x-intercept will be at point (6,0,0)
y-intercept:
To calculate for y-intercept we let x=0 and z=0 and substitute the values in the equation, here we shall have:
2(0)-3y+4(0)=12
solving for y we get:
-3y=12
hence:
y=12/(-3)
y=-4
therefore the y-intercept is at point (0,-4,0)
z-intercept:
To get the z-intercept we let x=0 and y=0, the we substitute the values in the equation as follows:
2(0)-3(0)+4z=12
solving for z we get:
4z=12
z=12/4
z=3
hence the z-intercept is at (0,0,3)
What is the area of a square with sides that are 3 2/5 in long?
Answers
Which expressions are polynomials?
Select each correct answer.
x – 1
5x²-√x
6+p
8x-z³
Answers
A square root is the same as a (1/2) power. The variables in a polynomial must all have powers that are positive integers.
Answer:
5x²-√x
Step-by-step explanation:
1)6 +p
2) x-1
3) 8x-z3
4) 5x²-√x --> has a root so it is not a polynomial
A bike rental company rented out 6 bikes in its first month. The number of bikes it rented tripled each month.
What was the total number of bikes the company rented out for the first 6 months?
Answers
The total number of bikes rented is 2,184
If you plug in the correct numbers into the formula
[tex]a \dfrac{1- r^{n} }{1-r} [/tex]
Then you get
[tex]6 \dfrac{1- 3^{6} }{1-3} [/tex]
And when the fraction is simplified it looks like this
[tex]6 \dfrac{-728}{-2} [/tex]
Once this is in simplified form you take the 6 and put it over 1 like so
[tex] \dfrac{6}{1} * \dfrac{-728}{-2}[/tex]
Then you find the prime factors of 6 and factor the -2 like so
[tex] \dfrac{3*2}{1} * \dfrac{-728}{-1*2}[/tex]
Once this is done cancel out the 2
[tex] \dfrac{3}{1} * \dfrac{-728}{-1}[/tex]
Then multiply -728 by 3
[tex]\dfrac{-2184}{-1}[/tex]
Then divide to get 2184
Your friend, ASIAX
Answer:
Step-by-step explanation:
Which sequence is geometric and has 1/4 as it’s fifth term and 1/2 as common ratio is it A)...,1,1/2,1/4,1/8,...
B)...,1/4,1/2,1,2,...
C)...,1/72,1/36,1/18,1,9,
D)...,8,4,2,1,...
Answers
Answer:
Option A - [tex]......,1,\frac{1}{2},\frac{1}{4},\frac{1}{8}...[/tex]
Step-by-step explanation:
Given : A geometric has [tex]\frac{1}{4}[/tex] as its's fifth term and [tex]\frac{1}{2}[/tex] as common ratio.
To find : Which sequence is geometric ?
Solution :
The geometric sequence is defined as [tex]a,ar,ar^2,ar^3...[/tex]
where, a is the first term and r is the common ratio.
The nth term of the sequence is [tex]a_n=ar^{n-1}[/tex]
We have given, [tex]r=\frac{1}{2}[/tex] and [tex]a_5=\frac{1}{4}[/tex]
The 5'th term is
[tex]a_5=ar^{5-1}[/tex]
[tex]\frac{1}{4}=a(\frac{1}{2})^{4}[/tex]
[tex]\frac{1}{4}=a(\frac{1}{16})[/tex]
[tex]\frac{16}{4}=a[/tex]
[tex]a=4[/tex]
The sequence form is [tex]4,4(\frac{1}{2}),4(\frac{1}{2})^2,4(\frac{1}{2})^3,4(\frac{1}{2})^4,4(\frac{1}{2})^5...[/tex]
[tex]4,2,1,\frac{1}{2},\frac{1}{4},\frac{1}{8}...[/tex]
From the given sequence Option A matched with result.
Therefore, Option A is correct.
“Lines that appear to be tangent are tangent. O is the center of the circle. What is the value of x?”
Answers
Let's calculate ∠O:
∠O=180-2*56=68+
x=90-68=22°
To solve the problem we will first name all the points given to us, and then we will find ∠O, and then we will find the value of x.
The value of x is 22°.
Given to us
∠OAB = 56°
Looking at the diagram below,
In ΔAOB
OA = OB = R, the radius of the circle O,
therefore, the ΔAOB is an isosceles triangle, with OA, OB as the congruent sides and AB as the base of the triangle.
Thus, ∠OAB = ∠OBA = 56°
What is the sum of all the angles of a triangle?Sum of all the angles of a triangle = 180°
∠O + ∠AOB + ∠OBA = 180°
We know ∠AOB = ∠OBA, therefore,
∠O + 2(∠AOB) = 180°
∠O + 2(56°) = 180°
∠O = 68°,
In ΔOBC,
BC is the tangent to the circle O, therefore,
∠OBC = 90°
Sum of all the angles of a triangle = 180°
∠O + ∠OBC + ∠OCB = 180°
68° + 90° + ∠OCB = 180°
∠OCB = 180° - 68° - 90°
∠OCB = 22°
Hence, the value of x is 22°.
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If 2a+3b=12 and ab=6 find the value of 8a^3+27b^3
Answers
((4a^2 - 6ab + 9b^2) + 18ab) = 144
4a^2 - 6ab + 9b^2 = 144 - 18 ab
8a^3 + 27b^3 = (2a + 3b)(4a^2 - 6ab + 9b^2)
8a^3 + 27b^3 = (2a + 3b)*(144 - 18ab)
8a^3 + 27b^3 = 12 * (144 - 18ab)
= 12 * ( 144 - 18*6) since ab = 6
= 12 * (144 - 108)
= 12 * (36)
= 432 <<<<==== answer
maya has 15 stickers . she places them on a page in rows of 5 . there are 2 flowers and 3 hearts in each row . how many hearts are on the page ? Draw to solve the problem . Write how many hearts are on the page
Answers
Di sediakan angka 4,5,6,7,8 dan huruf e,s,
f. Bila tidak boleh ada angka dan huruf yg sama, maka banyaknya.plat nomer yg dapat dibuat adalah
Answers
15 points and brainliest for CORRECT answer.
Given: ABCD is a trapezoid,
AD = 10, BC = 8,
CK - altitude
Area of ∆ACD = 30.
Find: Area of ABCD
Answers
30=1/2(10)h
30=5h
Divide each side by 5:
30/5=5h/5
6=h
The height of the triangle is also the height of the trapezoid. We can now find the area of the trapezoid. The formula we need is A=1/2(B+b)h. Substituting our numbers in, we have:
A=1/2(10+8)(6)=1/2(18)(6)=54
The area of the trapezoid is 54.
Why is the standard deviation preferable to the range as a measure of variation? select the correct answer below.
a. the standard deviation is preferable to the range as a measure of variation because the standard deviation takes into account all of the observations, whereas the range considers only the largest and smallest ones.
b. the standard deviation is preferable to the range as a measure of variation because the standard deviation is resistant to outliers, whereas the range is not.
c. the standard deviation is preferable to the range as a measure of variation because it is optimal when the median is used as the center of measure.
d. the standard deviation is preferable to the range as a measure of variation because the standard deviation is always smaller than the range?
Answers
Answer:
Option a is right.
Step-by-step explanation:
Both standard deviation and range are used as measures of dispersion. These show the deviations of the data within.
While range is maximum -minimum, the std deviation is the square root of variance and variance is the average of the sum of squares of each entry from the mean.
While range depends only on max and min the std deviation depends on each entry of the sample. Hence std deviation is a better measure.
a. the standard deviation is preferable to the range as a measure of variation because the standard deviation takes into account all of the observations, whereas the range considers only the largest and smallest ones.
HELP FAST PLEASE!!
Martin simplified the composed function f(x)=sin(arctan x). His work is shown below. Step 1: f(x)=sinA, where A=arctan x and x = tanA
Step 2: tanA= opp/adj=x/1
Step 3: hypotenuse= square root of 1^2-x^2= square root of 1-x^2
Step 4: sinA=opp/hyp=x/squareroot 1-x^2
In which step did Martin make is first error?
Answers
Step 1:
f (x) = sinA,
where
A = arctan x
and
x = tanA
step 1 it's OK
Step 2:
tanA = opp / adj = x / 1
step 2 it's OK
Step 3:
hypotenuse = square root of 1 ^ 2-x ^ 2 = square root of 1-x ^ 2
step 3 it's NOT OK
The correct form in this case is:
hypotenuse = square root of 1 ^ 2 + x ^ 2 = square root of 1 + x ^ 2
Answer:
Martin did make his first mistake in Step 3.
peter makes $6 per hour doing yard work plus $10 every house if pter does yard work for 6 houses and receives a paycheck for $210 how many hours did he work
Answers
The answer is 25 hours.
After calculating Peter's earnings from working on 6 houses, the remaining amount from his total paycheck indicates that he worked for 25 hours at his hourly wage of $6.
To determine how many hours Peter worked when he received a paycheck for $210, we need to consider his earnings per house and his hourly wage. Peter makes $6 per hour for doing yard work plus $10 for every house he does work on.
First, we calculate the total earnings from the houses he worked on. Since he did yard work for 6 houses, we multiply 6 houses by $10 per house:
6 houses times $10 per house = $60
Now, subtract the total earnings from houses from his total paycheck to find out how much he earned from hourly wages:
$210 (total paycheck) - $60 (earnings from houses) = $150 (earnings from hourly wage)
$150 / $6 per hour = 25 hours
So, Peter worked 25 hours doing yard work.
Someone please help me with this, i'm a little confused :(
A guy-wire is attached to a pole for support. If the angle of elevation to the pole is 67 and the wire is attached to the ground at a point 137 feet from the base of the pole, what is the length of the guy wire (round to 2 decimal places)?
A) 58.15 feet
B) 143.40 feet
C) 148.83 feet
D) 350.62 feet
Answers
PLEASE HELPPPPPP
Photo necessities produces camera cases. They have found that the cost , c (x) of making x camera cases is a quadratic function in terms of x.
The company also discovered that it cost $45 to produce 3 camera cases $257 to produce 7 camera cases and $792 to produce 12 camera cases.
Find the total cost producing 1 camera case
Answers
In this case the points will be:
(3. 4. 5)
(7, 257)
(12, 792)
The equation of the quadratic function in this case will be:
c (x) = 6x ^ 2 - 7x + 12
Therefore for x = 1 we have:
c (1) = 6 * (1) ^ 2 - 7 * (1) + 12
c (1) = 11 $
Answer:
Total cost producing 1 camera case is:
c (1) = 11 $
The total cost producing 1 camera case is:
$ 11
Step-by-step explanation:Let the quadratic function be:
[tex]c(x)=ax^2+bx+c[/tex]
Now, c(3)=45
This means:
[tex]9a+3b+c=45------------(1)[/tex]
c(7)=257
This means that:
[tex]49a+7b+c=257----------------(2)[/tex]
and c(12)=792
This imply:
[tex]144a+12b+c=792-------------------(3)[/tex]
On subtracting first equation from second we get:
[tex]40a+4b=212------------(4)[/tex]
and on subtracting second equation from third we get:
[tex]95a+5b=535-----------(5)[/tex]
Now on multiplying equation (4) by 5 and equation (5) by 4 and subtracting both equation we get:
a=6
Putting value of a in equation (4) we get:
b= -7
and putting the value of a and b in equation (1) we get:
c=12
Hence, the cost function is:
[tex]c(x)=6x^2-7x+12[/tex]
Now, the cost of producing 1 camera will be the value of c(x) when x=1
i.e.
[tex]c(1)=6-7+12\\\\\\c(1)=11[/tex]
Hence, the answer is:
$ 11
what is area
to count the inside of a shape
to count the out side of a shape
none of the above
Answers
Area refers to the amount of space inside a shape and is found by counting the inside of the shape. Therefore, the correct answer is option a.
"To count the inside of a shape": This means that when we calculate the area of a shape, we are determining the amount of space or surface area that is enclosed within the boundaries of that shape. In other words, it's the measurement of the total space covered by the shape, and it doesn't include the outer boundary or perimeter.
"To count the outside of a shape" is not an accurate definition for area. The outside of a shape is typically referred to as the perimeter or the circumference, and it represents the measurement of the boundary or the length of the outline of the shape.
"None of the above" is not the correct choice because the area is indeed about measuring the inside of a shape, as explained in the first option.
In summary, when we calculate the area of a shape, we are quantifying the space enclosed within the shape's boundary, not the space on the outside of it.
Therefore, the correct answer is option a.
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Determine if x + 2 is a factor of p(x) = x ^4 + 3x^ 3 + 4x ^2 - 8 and explain why.
Answers
-x^4-2x^3
-----------------------
x^3+4x^2-8
-x^3-2x^2
-------------------------
2x^2-8
-2x^2-4x
--------------
-4x-8
4x+8
----------------------------
/ /
is a factor because (x+2)(x^3+x^2+2x-4)=x^4+3x^3+4x^2-8
Answer:
(x+2) is a factor of P(x)
Step-by-step explanation:
Determine if x + 2 is a factor of p(x) = x ^4 + 3x^ 3 + 4x ^2 - 8
[tex]p(x) = x ^4 + 3x^ 3 + 4x ^2 - 8[/tex]
To determine (x+2) is a factor , we set x+2=0 and solve for x
[tex]x+2=0 , x=-2[/tex]
then we replace x with -2 in p(x)
[tex]p(x) = x^4 + 3x^ 3 + 4x ^2 - 8[/tex]
[tex]p(-2) = (-2)^4 + 3(-2)^ 3 + 4(-2)^2 - 8[/tex]
[tex]p(-2) = 16-24+16- 8=0[/tex]
WE got p(-2)=0 , so (x+2) is a factor of P(x)
Check my answer?
Given the proportion a/b = 8/15, which ratio completes the equivalent proportion a/8 = ?
My answer: 15/b
@KirbyLegs
Answers
When you solve a proportion, you cross multiply. You can have the same proportion just by interchanging 8 and b
a/8 = b / 15 When you cross multiply, you get
15a = 8b Try the given proportion to see what happens
1a 2a 3b 4d 5b
Find the missing value to the nearest hundredth cos___= 7/18
Answers
cos x=7/18
x=arc cos (7/18)-----> using a calculator-------> x=67.11°-----> x=1.17 radians
the answer is
x=67.11° or x=1.17 radians
The missing value to the nearest hundredth using inverse trigonometric function is 67.11°
Let us say
Cos x = 7/18
x will be the inverse of cosine of (7/18)
What is an inverse trigonometric function?The inverse trigonometric functions are the inverse functions of the trigonometric functions and are used to obtain an angle from any of the angle's trigonometric ratios.
x = cos⁻¹ (7/18)
x = 67.11°
Hence, the missing value to the nearest hundredth is 67.11°.
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Kendra watched two movies. The first lasted 100 min. the second lasted 1 hour, 55 min. Which movie was longer? By how many min.?
Answers
Second movie was 1h and 55min
1h is 60min
So 60+55=115
Ans:second movie was longer by 15min
*SM: 1 h 55 min -------------> 115 min
[tex]1 h * \frac{60 min}{1 h} = 60 min[/tex]
60 + 55 = 115 min
Second movie was longer by 15 min
Carol payed 271$ to rent a car for 4 days. What was the rate, r, per day to rent the car