Answer:
40%
Step-by-step explanation:
In order to find percent, you can set up the fraction 2/5 to the equation x/100.
[tex]\frac{2}{5}=\frac{x}{100}[/tex]
Then solve using algebra to cross-multiply.
[tex](2*100)=(x*5)[/tex]
[tex]200 = 5x[/tex]
[tex]x = \frac{200}{5} = 40[/tex]
so the answer is 40%.
Find x if Q is the midpoint of PR, PQ-19, and PR 8x + 14
a. 14. B7
C 3. D5
Answer:
Step-by-step explanation:
If Q is the midpoint of PR and PQ is 19, that means that QR is also 19 and the total length of PR is 38. Therefore,
PQ + QR = PR and
19 + 19 = 8x + 14 and
38 = 8x + 14 and
24 = 8x so
x = 3
Your choice is C
Q is the midpoint of the segment PR,
Since, Q is the midpoint of the segment PR,
PQ = QR = 19 units
By segment addition postulate,
PQ + QR = PR
Now substitute the values of the segments in the expression,
19 + 19 = (8x + 14)
38 = 8x + 14
8x = 38 - 14
8x = 24
x = 3
Therefore, value of x will be 3.
Option C will be the correct option.
Learn more,
https://brainly.com/question/4680922
Out of 290 racers who started the marathon, 259 completed the race, 28 gave up, and 3 were disqualified. What percentage did not complete the marathon?
Answer:
10.68%
Step-by-step explanation:
Total no of racers = 290
No of racers that completed the race = 259
No of racers that gave up = 28
No of racers that were disqualified = 3
No of racers that did not complete the marathon = 28 + 3 = 31
We need to find the percentage of the racers did not complete the marathon. It can be given by :
[tex]\%=\dfrac{\text{No of racers that did not complete the marathon}}{\text{Total no of racers}}\times 100\\\\=\dfrac{31}{290}\times 100\\\\=10.68\%[/tex]
So, the percentage of the racers that did not complete the marathon is 10.68%.
Divide.
remainder
20) 74
3 remainder of 7 i fink
Step-by-step explanation:
In circle T with mZSTU 46 and ST = 20 units, find the length of arc
SU. Round to the nearest hundredth.
Answer:
r= 20 units
theeta= 46
L= 2πr* theeta/360
L
L = 160 units
The length of arc is 16.049 unit.
What is an Arc?An "arc" in mathematics is a straight line that connects two endpoints. An arc is typically one of a circle's parts. In essence, it is a portion of a circle's circumference. A curve contains an arc.
We have,
m <STU = 46
and ST = 20 units
So, length of Arc
= 46/ 360 2πr
= 46/360 x 2 (3.14)(20)
= 16.0488 unit
Thus, the length of Arc is 16.0488 unit.
Learn more about Arc here:
https://brainly.com/question/18741430
#SPJ2
help i will give brainlist
Answer:
3. 2/10 4/20 3/15
4. 12/1 48/4 36/3
Step-by-step explanation:
is y=x/2 linear or nonlinear ?
Answer:
linear
Step-by-step explanation:
linear would be a straight line, while nonlinear is like a curve of any type.
35x-28xy Please help
Answer:
7 x ( 5 − 4 y )
Look at points C and D on the graph:
What is the distance (in units) between points C and D? Round your answer to the nearest hundredth.
5.50 units
6.40 units
9.00 units
41.00 units
Answer:
I think its 6.40 but I'm not sure.
17% of 350 enter the correct answer down below
Answer:
59.5
Step-by-step explanation:
To find the answer, multiply 17% by 350
17% = 0.17
0.17 x 350 = 59.5
Jon had $83.50 in his checking account on Monday. On Friday, his balance was
$325.75 after depositing his paycheck. If Jon gets paid $14.25 per hour, how
many hours did he work this week?*
Your answer
Answer:
about 20.5 hours
Step-by-step explanation:
first find out how much money he earned during the week by subtracting the friday balance and the monday balance
375.75 - 83.50 = $292.25 was the amount earned during the week
divide the amount earned by the amount earned per hour
292.25 / 14.25 ≈ 20.5 hours worked that week
hope this helps <3
Which equation has a value less than 54,811?
54,811 x 2 = ________
54,811 x one and two fourths = ________
54,811 x 1 = ________
54,811 x two fourths = ________
Answer:
Number 4 (54,811 x two fourths)
Step-by-step explanation:
54,811 x 2 = 109622
54,811 x one and two fourths = 82216.5
54,811 x 1 = 54811
54,811 x two fourths = 27405.5
The first, second, and third are 54811 multiplied by a number that is greater than or equal to 1. When a number is multiplied by something greater than 1, it gets bigger, and when multiplied by 1 it stays the same. The one where you have to mulitply by two fourths is multiplying by less than 1, so it gets smaller.
the perimeter of a triangle z measures 48 cm . it was dilated with a scale factor of 0.8 to form triangle p . what is the perimeter of triangle
Answer:
The perimeter of the p triangle = 38.4 cm
Step-by-step explanation:
Given
The perimeter of a triangle z be = 48 cm
The triangle is dilated by a scale factor of 0.8
To determine
What is the perimeter of the triangle after it is dilated by a scale factor of 0.8?
As the scale factor < 1, it means the new perimeter will be reduced.The new perimeter of the triangle p can be calculated by multiplying the perimeter of the original triangle z by 0.8
i.e.
Perimeter of triangle p = 48 × 0.8 = 38.4 cm
Therefore, the perimeter of the triangle p is = 38.4 cm
The boiling point for chlorine gas is − 34°C. The boiling point for nitrogen gas is about 6 times the boiling point of chlorine gas. What is the approximate boiling point of nitrogen gas?
Solve for the exterior angle NEEDD HELP FAST
Answer:
x=76 degrees
Step-by-step explanation:
x+59=135
-59 -59
x=76
i am 90% positive this is how you do it. Hope this helps! Happy holidays!!
You are getting a car wash for $45.20. You have to pay 5% sales tax. You want to tip the person who washed your car 20%. How much will you spend in total
Answer:
$56.50 in total.
Step-by-step explanation:
The answer is 56.50 because 5% of 45.20 is 2.26 and 20% of 45.20 is 9.04. So, 45.20 plus 2.26 and 9.04 is 56.50.
P.S Can I have brainliest?
Answer:
$56.50 is the total you spend on a car wash.
Step-by-step explanation:
Initial Price: $45.205% sales tax20% tip5% of $45.20 = $2.26
20% of $45.20 = $9.04
$9.04 + $2.26 = $11.30
Additional Price (sales tax and tip): $11.30$45.20 + $11.30 = $56.50
A = {3, 5, 7, 9, 11, 12, 12} B = {1, 2, 2, 5, 5, 9, 13} C = {2, 5, 8, 9, 12, 13, 17} Find the mean of each data set.
Answer:
okhgxghhdhdhjjdhdhdhhhdhdbx
two lines, a and b, are represented by the equations given below:
Answer:
-5,-11 because it satisfies both equations
Step-by-step explanation:
Plug -5 into both equations and you get -11
{x{ x + 4<0 or 6x>-12)
Answer:
[tex]x\in (-\infty , -4) \cup (-2,+\infty)[/tex]
Step-by-step explanation:
Solve the system of inequalities:
x + 4 < 0
OR:
6x > -12
The first inequality yields the solution:
x < -4
The second inequality gives the solution:
x > -2
The total solution is the disjunction of the individual solutions, i.e., the union of both.
It can be expressed as
[tex]\mathbf{x\in (-\infty , -4) \cup (-2,+\infty)}[/tex]
consider the following qaudratic function .f(x)=9x^2
Question:
Consider the following quadratic function. f(x) = −9x^2 + 16x − 13.
Identify the vertex
Answer:
[tex](\frac{8}{9},-\frac{53}{9})[/tex]
Step-by-step explanation:
Given
[tex]f(x) = -9x^2 + 16x - 13[/tex]
Required
Identify the vertex
The vertex of an equation is represented as:
[tex](x,f(x)) = (\frac{-b}{2a},f(x))[/tex]
i.e.
[tex]x = -\frac{b}{2a}[/tex]
In [tex]f(x) = -9x^2 + 16x - 13[/tex]
[tex]a= -9[/tex] [tex]b = 16[/tex] [tex]c = -13[/tex]
[tex]x = -\frac{b}{2a}[/tex] becomes
[tex]x = -\frac{16}{2 * -9}[/tex]
[tex]x = \frac{16}{2 * 9}[/tex]
[tex]x = \frac{8}{9}[/tex]
Substitute 8/9 for x in [tex]f(x) = -9x^2 + 16x - 13[/tex]
[tex]f(8/9) = -9(8/9)^2 + 16(8/9) - 13[/tex]
[tex]f(8/9) = -9(64/81)+ (16*8/9) - 13[/tex]
[tex]f(8/9) = -64/9 + (128/9) - 13[/tex]
Take LCM
[tex]f(\frac{8}{9}) = \frac{-64 + 128 -117}{9}[/tex]
[tex]f(\frac{8}{9}) = \frac{-53}{9}[/tex]
[tex]f(\frac{8}{9}) = -\frac{53}{9}[/tex]
Hence, the vertex is:
[tex](\frac{8}{9},-\frac{53}{9})[/tex]
What would be the point for B' after a dilation using a scale factor of 2.5?
Answer:
Coordinates of B' → (7.5, 35.5)
Step-by-step explanation:
Rule for the dilation of a point with a scale factor 'k' about the origin,
(x, y) → (kx, ky)
By this rule coordinates of the image point B' when scaled by a scale factor of 2.5,
B(3, 15) → B'(2.5 × 3, 2.5 × 15)
→ B'(7.5, 37.5)
Therefore, coordinates of point B' → (7.5, 35.5)
Evaluate the expression 5x for x = 4.
Answer:
20
Step-by-step explanation:
Solve 6x + c = k for x.
O A. x=kt
B. x = 6(k-c)
O c. x-***
O D. x= 6(k+ c)
Answer:
x = k/6 - c/6 :)))))))))))))))))))
- In rhombus VWXY, if VW = 24, and WX = 2x -12, what is x? Any thoughts ?!
Answer:
x = 18
Step-by-step explanation:
There's a line though all of the sides, so I'm going to assume that all sides are congruent.
Therefore
24 = 2x-12
add 12 to both sides
36 = 2x
divide by 2
x = 18
geometry help plz and thanks will mark as brainlist
Anyone please answer!!! It’s almost past due
Answer:
N = 76
Step-by-step explanation:
[tex]T = 50 + \frac{N - 40}{4}[/tex]
If T = 59,
[tex]59 = 50 + \frac{N - 40}{4}[/tex]
Simplify:
[tex]9 = \frac{N - 40}{4}[/tex]
[tex]36 = N - 40[/tex]
N = 76
I'm not entirely sure this is right, but I'm like 98% sure. (hopefully it's right!)
In making the decision to return to school for an MBA, prospective students desire to know the time it will take to recoup their investment (forgone wages plus tuition and other direct costs). The time it will take to recoup their investment is normally distributed. You are in charge of estimating this time for a brochure advertising an MBA program at UCLA. You randomly sample 20 past UCLA MBA students and find that the sample average is 3.61 years with a standard deviation of 0.63 years. To estimate the mean number of years required to recoup an investment in a UCLA MBA to within 2 months (0.17 years) with 80% confidence, the sample size should be approximately
Answer:
The value is [tex]n =23[/tex]
Step-by-step explanation:
From the question we are told that
The sample size is n = 20
The sample mean is [tex]\= x = 3..61 \ years[/tex]
The standard deviation is [tex]\sigma = 0.63 \ years[/tex]
The margin of error is [tex]E = 0.17 \ years[/tex]
From the question we are told the confidence level is 80% , hence the level of significance is
[tex]\alpha = (100 - 80 ) \%[/tex]
=> [tex]\alpha = 0.20[/tex]
Generally from the normal distribution table the critical value of is
[tex]Z_{\frac{\alpha }{2} } = 1.282[/tex]
Generally the sample size to estimate the mean number of years required to recoup an investment in a UCLA MBA to within 2 months is mathematically represented as
[tex]n = [\frac{Z_{\frac{\alpha }{2} } * \sigma }{E} ] ^2[/tex]
=> [tex]n = [\frac{1.282 * 0.63}{0.17} ] ^2[/tex]
=> [tex]n =23[/tex]
Select ALL of the following points that lie on the graph of f (x) = 7 - 3x
Answer:
(-1, 10)
(2, 1)
(0, 7)
Step-by-step explanation:
Any points, that makes the equation of the function, f(x) = 7 - 3x, true, is a point that lies on the graph of the function.
Let's check each of the options.
Option 1: (-2, 1).
Plug in x = -2, f(x) = 1 into f(x) = 7 - 3x
1 = 7 - 3(-2)
1 = 7 + 6
1 = 13 (this is not true)
Thus, (-2, 1) is not a point that lies on the graph of the function.
Option 2: (-1, 10).
Plug in x = -1, f(x) = 10 into f(x) = 7 - 3x
10 = 7 - 3(-1)
10 = 7 + 3
10 = 10 (this is true)
Thus, (-1, 10) is a point that lies on the graph of the function.
Option 3: (2, 1).
Plug in x = 2, f(x) = 1 into f(x) = 7 - 3x
1 = 7 - 3(2)
1 = 7 - 6
1 = 1 (this is true)
Thus, (2, 1) is a point that lies on the graph of the function.
Option 4: (0, 7).
Plug in x = 0, f(x) = 7 into f(x) = 7 - 3x
7 = 7 - 3(0)
7 = 7 - 0
7 = 7 (this is true)
Thus, (0, 7) is a point that lies on the graph of the function.
Option 5: (1, 5).
Plug in x = 1, f(x) = 5 into f(x) = 7 - 3x
5 = 7 - 3(1)
5 = 7 - 3
5 = 4 (this is not true)
Thus, (1, 5) is NOT a point that lies on the graph of the function.
rulfus has a box that contains cards of the same shape and size.there are 5 yellow cards, 4red cards, and 1 purple card.he draws a card at random replaced it, and draws a second card .what is the probability that both cards will be red?
Answer:
[tex]P(Red\ and\ Red) = \frac{4}{25}[/tex]
Step-by-step explanation:
Given
[tex]Yellow = 5[/tex]
[tex]Red = 4[/tex]
[tex]Purple = 1[/tex]
[tex]Total = 10[/tex]
Required
Determine the probability of selecting red, twice
Since it is a probability with replacement, the probability can be represented as:
[tex]P(Red\ and\ Red) = P(Red) * P(Red)[/tex]
And this is calculated as follows:
[tex]P(Red\ and\ Red) = \frac{n(Red)}{Total} * \frac{n(Red)}{Total}[/tex]
[tex]P(Red\ and\ Red) = \frac{4}{10} * \frac{4}{10}[/tex]
[tex]P(Red\ and\ Red) = \frac{2}{5} * \frac{2}{5}[/tex]
[tex]P(Red\ and\ Red) = \frac{4}{25}[/tex]
Which method correctly solves the equation using the distributive property?
-0.2(×-4)= -1.7
Answer:
third // C
Step-by-step explanation:
A box contains 9 identical glass spheres, tightly packed. The box is 12 inches by 12 inches. What is the total volume in cubic inches?
Answer:
V(b) = 576 in³
Step-by-step explanation:
9 = 3 * 3
12 = 3 * 2 *2
To have 9 spheres in a box 12 x 12 in²
We need to arrange in a grid of 3 x 3 spheres of 4" diameter, then
three rows and three columns will fit exactly i the box 12 x 12 in²
Now the height of the box need to be adequate for the diameter of the spheres ( 4 in )
Therefore the total volume of the box is:
V(b) = 12*12*4
V(b) = 576 in³
