Answers
Related Questions
A four-sided polygon has sides that measure (2x + 1), (4x – 10), (x + 1)and (12x + 25). What is the perimeter of the polygon, in terms of x?
Answers
(2x+1)+(4x-10)+(x+1)+(12x+25). The bold parts are terms that can be combined together and all the other numbers (constants) can be combined.
2x+4x+1x+12x=19x
1+ (-10)+1+25 = 17
19x+17 would be the simplified expression that represents the perimeter.
Final answer:
The perimeter of the polygon, given the sides (2x + 1), (4x – 10), (x + 1), and (12x + 25), is calculated by summing these expressions to get 19x + 17.
Explanation:
To find the perimeter of a four-sided polygon, we add together the lengths of all the sides. Given the sides (2x + 1), (4x – 10), (x + 1), and (12x + 25), the perimeter P in terms of x is calculated by summing these expressions:
P = (2x + 1) + (4x – 10) + (x + 1) + (12x + 25)
Now, we combine like terms:
P = 2x + 4x + x + 12x + 1 – 10 + 1 + 25
P = (2x + 4x + x + 12x) + (1 – 10 + 1 + 25)
P = 19x + 17
Therefore, the perimeter of the polygon in terms of x is 19x + 17.
how many liters of a 60% acid solution must be mixed with a 75% acid solution to obtain 20L of a 72% solution
Answers
y = amount of the 75% solution
now, how much is 60% of x? well, (60/100) * x, or 0.6x.
and how much is 75% of y? well, (75/100) * y, or 0.75y.
well, the resulting mixture is 72% of acid and then water or other liquids, but we know is that much off 20 liters, how much is that then? well 72% of 20 is (72/100) * 20, or 14.4.
regardless of what "x" and "y" are, we know that the resulting substance has to be 20 liters, thus x + y = 20.
and we also know that the amount of acid in each amount, will add up to the acid in the resulting amount.
since we know that there is 0.6x liters of only acid and 0.75y liters of only acid in each, thus 0.6x + 0.75y = 14.4.
[tex]\bf \begin{array}{lccc} &\stackrel{liters}{amount}&\stackrel{\%~of~acid}{amount}&\stackrel{acid~liters}{quantity}\\ &------&------&------\\ \textit{60\% solution}&x&0.60&0.6x\\ \textit{75\% solution}&y&0.75&0.75y\\ ------&------&------&------\\ mixture&20&0.72&14.4 \end{array} \\\\\\ \begin{cases} x+y=20\implies \boxed{y}=20-x\\ 0.6x+0.75y=14.4\\ -------------\\ 0.6x+0.75\left( \boxed{20-x} \right)=14.4 \end{cases} \\\\\\ 0.6x-0.75x+15=14.4\implies -0.15x=-0.6 \\\\\\ x=\cfrac{-0.6}{-0.15}\implies x=4[/tex]
how many liters of "y"? well, y = 20 - x.
Which fraction is between 0 and 1/2?
A. 2/3
B. 7/10
C. 3/5
D. 3/8
Answers
Your answer is D
Hope this helps
Fraction D. 3/8 is between 0 and 1/2.
Explanation:
1/2 is 0.50, or half.
2/3 is not the correct answer because the denominator is 3, and half of 3 would be 1.5, and 2 is greater than that.
7/10 is not the correct answer because the denominator is 10, and half of 10 is 5. 7 is greater than that.
3/5 is not the correct answer because the denominator is 5, and half of 5 is 2.5. 3 is greater than that.
Find complete factorization of the expression 32xy-56xyz
Answers
32xy-56xyz
We will use the distributive property for this.
Find a common factor. Biggest one is 8.
Since both numbers have xy, put that next to 8 outside the parenthesis and keep the z with the value for 56xyz.
8xy(4-7z) <== factored expression
I hope this helps!
~kaikers
Evaluate the expression. 12 + 3 • 8
Answers
To solve the expression 12 + 3 • 8, first perform the multiplication to get 24, then add this to 12 to get a final result of 36.
Explanation:To evaluate the expression 12 + 3 • 8, you must follow the order of operations, often remembered by the acronym PEMDAS which stands for Parentheses, Exponents, Multiplication and Division, Addition and Subtraction, from left to right. As per PEMDAS, multiplication should be carried out before addition.
First, perform the multiplication: 3 times 8 is 24. Then, add the result to 12.
So, 12 + 24 equals 36. Therefore, the value of the expression 12 + 3 • 8 is 36.
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The percents of different drinks sold at a snack shop are shown in the circle graph. What percent of the drinks sold were colas?
Answers
Ice tea: 30%
Lemonade: 32%
Colas: ?
The percent of the drinks sold that were colas is 38%.
One whole circle is equivalent to 100%. Since the ice tea takes up 30% of the circle and lemonade takes up 32% of the circle, the remaining portion for colas is no longer 100%. We simply deduct these percentages from 100% to get the percentage of colas which is 38%.
find the domain of the function f(x)=24/x^2-20x+96
Answers
A pair of vertical angles has measures
(2z+43)°
and
(−10z+25)°
.
What is the value of z? Vertical angles = each other
(2z+43)°
=
(−10z+25)°
−
3
2
−
11
4
−31
Answers
-2z -2z
43=-12z+25
-25 -25
18=-12z
z=-1.5
So Z=3/2
Answer:
The answer is Z equals negative 3/2
Step-by-step explanation:
can someone please help me
Answers
Most folks like to eliminate fractions first. To do that, you can multiply by 12.
9(x -3) < 4(x -4)
Now, eliminate parentheses.
9x -27 < 4x -16
Subtract 4x to put the variable on one side only. Add 27 to put the constant on the other side only.
5x < 11
Divide by the coefficient of x to get x by itself.
x < 11/5
39. You can actually work these without eliminating fractions. Just do the arithmetic in the usual way.
Eliminate parentheses.
(2/5)(3 -2n) ≥ (3/8)(2 -3n)
6/5 -(4/5)n ≥ 3/4 -(9/8)n
Add (9/8)n -6/5
n(9/8 -4/5) ≥ 3/4 -6/5
(13/40)n ≥ -9/20
Multiply by the inverse of the coefficient of n
n ≥ (-9/20)*(40/13)
n ≥ -18/13
Rewrite the equation of the parabola in vertex form. y= x2 + 8x - 21
Answers
Answer:
[tex]y=(x+4)^{2}-37[/tex]
Step-by-step explanation:
we know that
The equation of a vertical parabola into vertex form is equal to
[tex]y=a(x-h)^{2}+k[/tex]
where
(h,k) is the vertex of the parabola
if a> 0 then the parabola open upward (vertex is a minimum)
if a< 0 then the parabola open downward (vertex is a maximum)
In this problem we have
[tex]y=x^{2}+8x-21[/tex]
Convert to vertex form
Complete the square
[tex]y+21=x^{2}+8x[/tex]
[tex]y+21+16=(x^{2}+8x+16)[/tex]
[tex]y+37=(x^{2}+8x+16)[/tex]
[tex]y+37=(x+4)^{2}[/tex]
[tex]y=(x+4)^{2}-37[/tex] --------> equation in vertex form
The vertex is the point [tex](-4,-37)[/tex]
the parabola open upward (vertex is a minimum)
Answer:
the answer is y=(x+4)^2-37
Step-by-step explanation:
Which of the quadratic functions has the narrowest graph? Y = 1/6x^2, y = 2x^2, y = -x^2, y = 1/8x^2
Answers
If the absolute value of a is <1 the graph is wider than when a = 1
If the absolute value of a is >1 the graph is narrow than when a = 1
The only function that fits that description is
y = 2x^2
B <<< answer.
Answer:
[tex]y=2x^2[/tex]
B is correct
Step-by-step explanation:
Given: We are given equation of parabola ans to choose narrowest graph.
[tex]y=ax^2[/tex]
Parabola form narrowest and widest.
Larger value of a most narrowest graph.
Smaller value of a most widest graph.
Now, we will see the coefficient of x²
[tex]y=\dfrac{1}{6}x^2,\ \ \ a=\dfrac{1}{6}[/tex]
[tex]y=2x^2,\ \ \ a=2[/tex]
[tex]y=-x^2,\ \ \ a=-1[/tex]
[tex]y=\dfrac{1}{8}x^2,\ \ \ a=\dfrac{1}{8}[/tex]
Now, we arrange the value of a in descending order.
[tex]2>1>\dfrac{1}{6}>\dfrac{1}{8}[/tex]
2 is largest value of these.
Hence, The narrowest graph is [tex]y=2x^2[/tex]
NEED answer fast, please hurry. If events A and B are independent, and the probability that event A occurs is 83%, what must be true?
The probability that event B occurs is 17%.
The probability that event B occurs is 83%.
The probability that event A occurs, given that event B occurs, is 83%.
The probability that event B occurs, given that event A occurs, is 83%.
Answers
Answer:
the answer is C.
Step-by-step explanation:
83%
The true statement about the given conditional Probability is; The probability that event A occurs, given that event B occurs, is 83%.
How to Solve Conditional Probability?
We are told that If events A and B are independent, and the probability that event A occurs is 83%.
Now, Conditional probability like p(A|B) is the probability of event A occurring, given that event B occurs. Thus, applying that to our question means we can denote that;
The probability that event A occurs, given that event B occurs, is 83%.
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Use completing the square to solve for x in the equation (x - 12)(x + 4) = 9.
A. x = -1 or 15
B. x = 1 or 7
C. x (plus sign over minus sign) square root of 41.
D. x (plus sign over minus sign) square root of 73.
Please help! This is timed!
Answers
(x - 12) (x + 4) = 9
Expand out terms of the left-hand side:
x^2 - 8 x - 48 = 9
Add 48 to both sides:
x^2 - 8 x = 57
Add 16 to both sides:
x^2 - 8 x + 16 = 73
Write the left hand side as a square:
(x - 4)^2 = 73
Take the square root of both sides:
x - 4 = sqrt(73) or x - 4 = -sqrt(73)
Add 4 to both sides:
x = 4 + sqrt(73) or x - 4 = -sqrt(73)
Add 4 to both sides:
Answer: x = 4 + sqrt(73) or x = 4 - sqrt(73) Thus the Answer is D:
Answer:
It is D.x=4+√73
Step-by-step explanation:
Got it right on edg.2022 :))
Write an equation (any form) for the quadratic graphed below
Answers
.. y = -(x -2)^2 + 3
_____
The vertex is (2, 3) and the graph opens downward. The vertical scale factor is 1.
Leticia charges $8 per hour to babysit. She babysat Friday night for 4 hours, and then she babysat again on Saturday. She earned a total of $72. How many hours did Leticia babysit on Saturday? Choose two answers: one for the equation that models this situation and one for the correct answer.
Answers
First, we have to look at the equation that models this situation. We learn that the price per hour of babysitting is $8. On Friday, Leticia babysat for 4 hours, and on Saturday, she babysat an unknown amount of time. In total, she earned $72. Therefore:
8 ( 4 + x ) = 72
( 4 + x ) = 72 / 8
4 + x = 9
x = 9 - 4
x = 5
Leticia babysat 5 hours on Saturday.
For which of the inequalities below is v = 4 a solution?
A v + 5 < 8
B v + 5 > 9
C v + 5 ≥ 9
D v + 5 ≤ 8
Answers
9≥9 which is true
The circumference of a circle is 18.84 kilometers. What is the circle's radius? C=18.84 km Use 3.14 for . kilometers
Answers
The Circle's radius is roughly 3 kilometers.
To find the compass of a circle when given the circumference, we can use the formula
C = 2πr
where C is the circumference, and r is the compass.
Given that the circumference is18.84 kilometers, we can substitute these values into the formula and break for the compass
18.84 = 2 x3.14 x r
Dividing both sides of the equation by 2 x 3.14
18.84 /( 2 x 3.14) = r
Simplifying the right side
r ≈18.84/6.28
r ≈ 3 kilometers.
Thus, the circle's radius is roughly 3 kilometers.
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5÷4×6+e=5what does this equal ?
Answers
So following (parenthesis, exponents, multiplication, devision, addition, subtraction)
e=125/24 or 5 5/24
A circle has an area of 75 square centimeters. Which answer is closest to the measure of its radius?
A) 2.75 centimeters
B) 4.9 centimeters
C) 9.8 centimeters
D) 23.9 centimeters
Answers
75 = [tex] \pi r^2 [/tex]
[tex]r [/tex] ≈ 4.89
So, answer is B.
Answer:
4.9
Step-by-step explanation:
what is the 4Th rule of probability in statistics?
Answers
Final answer:
The fourth rule of probability in statistics is the sum rule, which states that the probability of the occurrence of one event or the other event, of two mutually exclusive events, is the sum of their individual probabilities.
Explanation:
The fourth rule of probability in statistics is the sum rule. The sum rule is used when considering two mutually exclusive outcomes that can come about by more than one pathway. It states that the probability of the occurrence of one event or the other event, of two mutually exclusive events, is the sum of their individual probabilities.
For example, if we flip a penny (P) and a quarter (Q), the probability of getting one coin coming up heads and one coin coming up tails can be calculated as [(PH) (QT)] + [(QH) × (PT)]
=( [tex]\frac{1}{2}[/tex] × [tex]\frac{1}{2}[/tex] ) + ( [tex]\frac{1}{2}[/tex] ×[tex]\frac{1}{2}[/tex] )
[tex]= \frac{1}{2}[/tex]
Two circles have the same radius. Complete the description for whether the combined area of the two circles is the same as the area of a circle with twice the radius. The combined area of two circles with the same radius is ___πr2. The area of a circle with twice the radius is ___πr2. The combined area of two circles is as the area of a circle with twice the radius.
Answers
A certain mixture of nuts contains cashews, almonds, and macadamia nuts. Each container must include three times as many almonds as cashews and twice as many cashews as macadamia nuts. If there are a total of 24 ounces in each container, how many ounces of cashews must be included?
Answers
C:M = 2:1
A:C:M = 6:2:1
The proportion of cashews is 2/(6+2+1) = 2/9 of the mix. For 24 ounces, that is
.. (2/9)*(24 oz) = 5 1/3 oz . . . . . of cashews
what is 6 ×2/3 in simplest form
Answers
Brainliest please?
8,321/100 is equal to which number?
Answers
The answer is 83.21
Hope this helps
To the nearest hundredth, what is the length of line segment AB ? Drag your answer into the box. The length of line segment AB is approximately units
9.54
10.44
13.00
13.15
Answers
Answer:
B. 10.44 units.
Step-by-step explanation:
We are asked to find the length of line segment AB.
To find the length of line segment AB we will use distance formula.
[tex]\text{Distance}=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
Upon substituting the coordinates of point A and B in distance formula we will get,
[tex]\text{Distance between point A and point B}=\sqrt{(1--9)^2+(-1--4)^2}[/tex]
[tex]\text{Distance between point A and point B}=\sqrt{(1+9)^2+(-1+4)^2}[/tex]
[tex]\text{Distance between point A and point B}=\sqrt{(10)^2+(3)^2}[/tex]
[tex]\text{Distance between point A and point B}=\sqrt{100+9}[/tex]
[tex]\text{Distance between point A and point B}=\sqrt{109}[/tex]
[tex]\text{Distance between point A and point B}=10.4403065089105502\approx 10.44[/tex]
Therefore, the length of line segment AB is 10.44 units and option B is the correct choice.
Answer:
I'm a nooby so 10.44.
Step-by-step explanation:
it takes Joanna 15 minutes to complete 4 puzzles. At that rate, how many puzzles can she complete in 1 hour 45 minutes
Answers
4 puzzles = 15 min
1 puzzle = 15/4 = 3.75 min
x puzzles = 105 min (which is the same as 1 hour 45 minutes)
divide 105 / 3.75 = 28
soooo....
28 puzzles = 105 min
Joanna can complete 28 puzzles in 1 hour 45 minutes.
Hope this helped! :)
1 hour 45 min = 95 min. 95/15 = 7. 7 x 4 = 28
for a standard normal distribution whats the probability of getting a positive number
Answers
In a standard normal distribution, the probability of getting a positive number is 0.5.
Explanation:Probability of Getting a Positive Number in a Standard Normal Distribution
In a standard normal distribution, the probability of getting a positive number is 0.5. This is because the standard normal distribution is symmetric around 0, and half of the distribution lies to the right of 0, which corresponds to positive numbers.
Identify the first step in solving the equation below. 2003-05-04-00-00_files/i0420000.jpg A. Subtract 2w from each side. B. Multiply each side by w. C. Add 2w to each side. D. Divide each side by 2.
Answers
The answer to your problem is A)0.0310 and D)1.01
A significant figure is any number that is not a stand-alone zero which means any zero in the middle of a sequence of numbers or at the end of a sequence of numbers is counted as significant, for example: these zeros are significant (1, 2, 3, and 4 is significant as well) | |0000123004 | | | |these zeros are nonsignificant
A cylinder fits inside a square prism as shown. For every cross section, the ratio of the area of the circle to the area of the square is or .
Since the area of the circle is the area of the square, the volume of the cylinder equals
the volume of the prism or (2r)(h) or πrh.
the volume of the prism or (4r2)(h) or 2πrh.
the volume of the prism or (2r)(h) or r2h.
the volume of the prism or (4r2)(h) or r2h.
Answers
To find this ratio we need to find areas of the circle and the square.
Circle:
[tex]Area= radius^{2} * \pi \\ A_{1} = r^{2} * \pi [/tex]
Square:
[tex]Area= side^{2} \\ A_{2} = (2r)^{2} \\ A_{2} 4r^{2}= [/tex]
Now we divide these two areas to find ratio:
[tex]ratio= \frac{ A_{1} }{ A_{2} } \\ ratio= \frac{r^{2} * \pi }{4r^{2}} \\ ratio= \frac{ \pi }{4} [/tex]
"Since the area of the circle is the area of the square,"
From the ratio above we can see that areas are not same.
"the volume of the cylinder equals"
Formula for volumes of cylinder and prism follow the formula:
[tex]Volume=base*height[/tex]
For cylinder:
[tex]V=r^{2} * \pi *h[/tex]
For prism:
[tex]V= (2r)^{2} \\ V=4 r^{2} [/tex]
The ratio of the area of the cross sectional circle and area of the cross sectional square is π : 4
What is the ratio of two quantities?Suppose that we've got two quantities with measurements as 'a' and 'b'
Then, their ratio(ratio of a to b) a:b or [tex]\dfrac{a}{b}[/tex]
We usually cancel out the common factors from both the numerator and the denominator of the fraction we obtained. Numerator is the upper quantity in the fraction and denominator is the lower quantity in the fraction).
Suppose that we've got a = 6, and b= 4, then:
[tex]a:b = 6:2 = \dfrac{6}{2} = \dfrac{2 \times 3}{2 \times 1} = \dfrac{3}{1} = 3\\or\\a : b = 3 : 1 = 3/1 = 3[/tex]
Remember that the ratio should always be taken of quantities with same unit of measurement. Also, ratio is a unitless(no units) quantity.
For this case, we're specified that:
Radius of the circle of the cross section of the cylinder = r unitsSide length of the square cross section of the square prism = 2r unitsThen, the area of the circle is:
[tex]\pi r^2 \: \rm unit^2[/tex]
and the area of the square is: [tex]\rm side^2 = (2r)^2= 4r^2 \: \rm unit^2[/tex]
The ratio of the area of the circle to the area of the square is:
[tex]\dfrac{\pi r^2}{4r^2} = \dfrac{\pi}{4} = \pi : 4[/tex]
Thus, the ratio of the area of the cross sectional circle and area of the cross sectional square is π : 4
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cade road 1 3/5th miles on Saturday and 1 3/4th on Sunday. how far did he ride on the two days?