Answer:
2 or 3 im not sure but choes 2
Step-by-step explanation:
As part of a math lesson on probability, Mr. Keen rolled a standard die 30 times. He predicted the die would land on three 5 times. He actually rolled a three 8 times. What is the percent error for his prediction?
Using it's concept, it is found that the percent error for this prediciton is of 60%.
What is the percent error?The percent error of an amount is the absolute value of the difference between the actual amount and the expected amount, multiplied by 100% and divided by the expected amount.
In this problem:
The expected amount was of 5 times.The actual amount was of 8 times.Hence, the percent error is given by:
P = |8 - 5|/5 x 100% = 3/5 x 100% = 0.6 x 100% = 60%.
More can be learned about percent error at https://brainly.com/question/25224978
Answer:
its 37.5%Step-by-step explanation:
0.65 converted to percent is
Answer:
65%
Step-by-step explanation:
65%
One decimal place is equal too the 100% so .65 is equal too 65%
Sorry if my english is not great.
3) Solve the equation for x.
10(4x + 4) = 400
A) 2
B) 4
C) 9
D) 18
Answer:
C) 9
Step-by-step explanation:
10(4x + 4) = 400
40x + 40 = 400
40x = 360
x = 9
Answer:
First factor out the expression
(10•4x)+(10•4)=400
40x+40=400
Then solve
40x+40=400
-40 = -40
40x=360
------ ------
40 40
x=9
C) 9
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•Expert•
Brainly Community Contributor
What is the equation of the line shown in this graph?
Answer:
x=-2
Step-by-step explanation:
Since it's a vertical line the answer is going to be x= which ever number the line is on. In this case x=-2
In the figure below, AD and EC intersect at point G, mAGB = 35°, and mAGE = 69°
What is mBGC?
A.
111°
B.
145°
C.
76°
D.
104°
Answer:
The correct answer is C.76.
Hope this helps you!!
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the parent-teacher associating is raising money for new swing set. they need $682.56 to purchase the swing set and receiving a 200 donation. the remaining amount will be equally divided among 8 different student groups to raise. How much will each student group need to raise in order to purchase the swing
Answer:
60.32
Step-by-step explanation:
682.56-200=482.56
482.56/8= 60.32
one day a store sells 14 pairs of jeans . The 14 jeans represents 20% of total number of items sold that day. How many items did the store sell in one day
Answer:
items sold in 1 day = 140
Step-by-step explanation:
14 pairs of jeans = 28 jeans total
the 14 "pair of jeans" repesents 20% of the total = x
28 = 20x/100
2800/20 = x
x = 140
Write the system of equations, then solve. SHOW ALL WORK!! please HELP! QUICK
Answer:
3 30 page printers, 10 70 page printers
Step-by-step explanation:
x + y = 13
40x+70y = 820
Solving for y in first equation gives: y = 13 - x
Plug into second equation: 40x + 70(13 - x) = 820
40x + 910 - 70x = 820
-30 x = -90
x = 3
Plug into original equation: 3 + y = 13
y must = 10.
So, the company owns 3 thirty page presses, and 10 70 page presses,
Ezekiel manages a clothing store. In May, sales were $129,800. In June, sales were $131,975. What was the rate of change?
The rate of change of the sles of the clothing store that Ezekiel manages from May to June is $2,175
What is the rate of change?
Subtraction is the mathematical operation that involves determining the difference between two or more numbers.
Rate of change = sales in June - sales in May
$131,975 - $129,800 = $2,175
To learn more about subtraction, please check: https://brainly.com/question/854115
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A tissue box shaped like a cube, has a volume of about 90 cubic inches. What is the approximate length of one side of the tissue box?
The approximate length of one side of the tissue box which has a volume of about 90 cubic inches is 4.5 inches.
What is of volume of cube?Volume of cube is the amount of quantity, which is obtained by it in the 3 dimensional space.
The volume of the cube can be given as,
[tex]V=a^3[/tex]
Here, (a) is the side of the cube.
A tissue box, shaped like a cube, has a volume of about 90 cubic inches. Put the value of volume in above formula,
[tex]90=a^3\\a^3=90\\a=\sqrt[3]{90}\\a=4.48\\a\approx 4.5\rm\; in[/tex]
Thus, the approximate length of one side of the tissue box which has a volume of about 90 cubic inches is 4.5 inches.
Learn more about the volume of cube here;
https://brainly.com/question/3390425
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8.
60 fifth-grade students participating in
an event. The students will be put into
groups among their own grade and into
the largest possible equal groups with no
students left over. How many students will
be in each group?
A.
2
po
B. 3
C.
6
D. 12
Answer:
c.6
Step-by-step explanation:
6 is the gcf between 42 and 60
Answer:
it'll be 6
Step-by-step explanation:
6*5 so 5 groups of 6
50PTS Consider this equation .sin(0) = 4 If is an angle in quadrant II, what is the value of ? A. B. C. D.
Answer:
A.
[tex] - \frac{ \sqrt{377} }{29} [/tex]
What number to be added to each of the number 6,16,36 and 76 to be in proportion?
Answer:
[tex] \pink{ \pmb{SOLUTION:-}}[/tex]
Here,
Let x must be added.[tex]\displaystyle{ \frac{6 + x}{16 + x} = \frac{36 + x}{76 + x} }[/tex]
[tex](6 + x)(76 + x) = (36 + x)(16 + x)[/tex]
[tex]456 + 6x + 76x + {x}^{2} = 576 + 36x + 16x + {x}^{2} [/tex]
[tex]82x + 456 = 576 + 52x[/tex]
[tex]82x - 52x = 576 - 456[/tex]
[tex]30x = 120[/tex]
[tex]\displaystyle{x = \frac{120}{30} }[/tex]
[tex]{ \rightarrow{ \pmb{x = 4}}}[/tex]
Line /has a what slope.
1.negative
2.0
3.positive
4.undefined
The population of a city has decreased by 38% since it was last measured. If the current population is 40,300, what was the previous population.
Answer:
65,000
Step-by-step explanation:
100-38 is 62%
40,300 is 62% of whatever x is
40,300*100= 4,030,000
4,030,000/62=65,000
Every time Liliana bakes a batch of brownies, she uses 3/4 cup of chocolate. If she has 128 cup(s) of chocolate remaining, how many batches of brownies can Liliana make
Answer:
2
Step-by-step explanation:
12/8 is equal to 6/4.
6 divided by 3 is 2.
help me please i need help please
Answer:
Step-by-step explanation:
your dad said he will help you
Susan made $550 baby sitting during the summer. She made $256 helping her grandmother working on the farm She spent $175 on a new dress. Which number sentence could be used to find how much money Susan had left?
1. $550 - $256 + $75
2. $550 - $256 - $75
3. $550 + $256 + $75
4. $550 + $256 + $75
23) A movie theatre has 900 seats of which 15% are in the balcony. How many seats are NOT in the balcony?
A.
765
B.
90
C.
785
D.
875
Answer:
A.765 seats are not in the balcony
Step-by-step explanation:
if 15% are in the balcony then 85% are not in the balcony so..
900 * 0.85 = 765
Answer:
765
Step-by-step explanation:
900*.15=135
900-135 = 765
Which of the lines is a line of symmetry for the hexagon?
A.
PQ and LM
B.
JK and NO
C.
JK only
D.
all of the lines
Answer: the answer is b which is line NO and line JK
Step-by-step explanation: one line is vertical and the other is horizontal . Both lines make the sides equivalent and equal , so they make a symmetry . HOPE IT HELPS YOU BUDDY .PLEASE GIVE BRAINLIEST .THANKS ..
Answer:
The Correct Answer is B.JK and No.
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Find the area of the triangle below.
Be sure to include the correct unit in your answer.
Answer:
77 cm²
Step-by-step explanation:
The area of a triangle is given by the formula ...
A = 1/2bh
where b is the base length, and h is the altitude perpendicular to the base.
__
Here, you are shown b=22 cm and h=7 cm. The area is ...
A = 1/2(22 cm)(7 cm) = 77 cm²
Soccer is played on a rectangular field that is usually 120 yards long and 75 yards wide. Find the perimeter and the area of the soccer field. Perimeter: .yds. Area: yds\large ^2
Answer:
Perimeter: 120*2 + 75*2 = 240 + 150 = 390 yards
Area: 120*75 = 9000 [tex]yards^{2}[/tex]
An architect drew the blueprint for a new office building. He used a scale in which 1 inch represents 7.5 feet. The floor of an office in the building will have actual dimensions of 14 feet by 24 feet. What will the dimensions on the blueprint be?
A.
105 inches by 180 inches
B.
21.5 inches by 31.5 inches
C.
6.5 inches by 16.5 inches
D.
1.87 inches by 3.2 inches
Since we know the scale factor of 1 inch represents 7.5 feet, we can plug in the dimensions for the scale on which the architect drew.
For 14 feet, we can multiply 14 by 1 inch/7.5 feet to get a product of 1.87 inches. Then, we can do the exact same thing with the other width of the floor, which is 24. 24 × 1/7.5 = 3.2
The final dimensions of the blueprint will be D, 1.87 inches by 3.2 inches.
What is the probability of landing on an odd number and then landing on a number greater than 7?
Answer:
72%
Step-by-step explanation:
A person has a bag containing quarters and dimes. There are a total of 61 coins in the bag, and the total value of the coins is $10.45.
Answer:
Q+D = 65, multiply both sides by 2525Q + 25D = 162525Q + 10D = 950 subtract to get 15D = 675 D = 675/15 = 135/3 = 45 dimes Q = 65-45 = 20 quarters25(20) + 10(45) = 500+450 = 950
Solve the system of equations. y=4x+5y=x2+12x+20
Answer:
[tex]\begin{pmatrix}x=-3,\:&y=-7\\ x=-5,\:&y=-15\end{pmatrix}\\[/tex]
Step-by-step explanation:
[tex]\begin{bmatrix}y=x^2+12x+20\\ y=4x+5\end{bmatrix}[/tex]
[tex]\mathrm{Subtract\:the\:equations}[/tex]
[tex]y=x^2+12x+20[/tex]
[tex]y-y=x^2+12x+20-\left(4x+5\right)[/tex]
[tex]\mathrm{Simplify}[/tex]
[tex]0=x^2+8x+15[/tex]
will pay the first one that answers this question
Answer:
a. I
b. II
c. IV
Solve for x , y and z using geometric mean altitude theorem and leg theorem
Check the picture below.
when running a line, in a right-triangle, from the 90° angle perpendicular to its opposite side, we will end up with three similar triangles, one Small, one Medium and a containing Large one. So let's use proportions to get x,y and z.
[tex]\cfrac{x}{30}~~ = ~~\cfrac{30}{24}\implies \cfrac{x}{30}~~ = ~~\cfrac{5}{4}\implies x=\cfrac{150}{4}\implies \boxed{x=\cfrac{75}{2}} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{y}{24}~~ = ~~\cfrac{x-24}{y}\implies \cfrac{y}{24}~~ = ~~\cfrac{\frac{75}{2}-24}{y}\implies \cfrac{y}{24}~~ = ~~\cfrac{~~ \frac{27}{2}~~}{y}\implies \cfrac{y^2}{24}=\cfrac{27}{2} \\\\\\ y^2=\cfrac{(24)(27)}{2}\implies y=\sqrt{\cfrac{(24)(27)}{2}}\implies \boxed{y=18} \\\\[-0.35em] ~\dotfill[/tex]
[tex]\cfrac{z}{y}~~ = ~~\cfrac{30}{24}\implies \cfrac{z}{18}~~ = ~~\cfrac{5}{4}\implies z=\cfrac{(18)(5)}{4}\implies \boxed{z=\cfrac{45}{2}}[/tex]
What is the median of the data represented in the dot plot below?
Answer:
11
Step-by-step explanation:
organize it:
10, 10, 11, 11, 11, 11, 12, 12, 13
the number in the middle of the order is the median, in this case the median would be 11.
5(3 + 4) − 2 = 7 − 3(−2 + 11)
Answer:
33 = - 20
Step-by-step explanation:
In this equation you have to use BEMA or PEMDAS (however you learned it) ot solve. (Brackets, Exponents, Multiplcation/Divison, Addition/Subtraction) or (Parentheses, Exponents, Multiplication, Division, Addition, SUbtraction)
5(3 +4) - 2 would be simplified down first to
5(7) -2 because parentheses are the first thing you do in any equation like this.
35 -2 because multiplication and divison are next due to the fact there are no exponents
33 because subtraction is last. You then do the same to the other side.
7 -3 (-2 +11)
7 + -3(9) (you can change the minus three to a plus negative three to make the next step more clear)
7 + -27
-20
33 = -20