Answer:
Percent error = 4.29%
Step-by-step explanation:
Percent error can be defined as a measure of the extent to which an experimental value differs from the theoretical value.
Mathematically, it is given by this expression;
[tex] Percent \; error = \frac {experimental \;value - theoretical \; value}{ theoretical \;value} *100[/tex]
Given the following data;
Experimental value = 67
Theoretical value = 70
Substituting into the equation, we have;
[tex] Percent \; error = \frac {67 - 70 }{ 70} *100[/tex]
[tex] Percent \; error = \frac {3}{70} *100[/tex]
[tex] Percent \; error = 0.04286 *100[/tex]
Percent error = 4.29%
What are the mathematical names for these shapes?
The mathematical names of the given figures are:
a. square pyramid
b. sphere
c. cube
d. triangular pyramid
What are Mathematical Names of Shapes?A pyramid has four triangular faces and a base that is usually a square. For example, figure A in the diagram is a square pyramid.A sphere is a three-dimensional shape that has a round, ball-like shape. Figure B is an example of a sphere.A cube is a three dimensional shape that has 6 square surfaces. An example of a cube is the shape in figure C. The shape in figure D is a triangular pyramid having a triangular base.Thus, the mathematical names of the given figures are:
a. square pyramid
b. sphere
c. cube
d. triangular pyramid
Learn more about shapes on:
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What is the percent increase from 40 to 64
Answer:
60 percent
Step-by-step explanation:
Where: 40 is the old value and 64 is the new value. In this case we have a positive change (increase) of 60 percent because the new value is greater than the old value.
4) 4x + 3y = 56
2x + y = 24
Solve using elimination please show work
Answer:
x = 8 y = 8
Step-by-step explanation:
Multiply 2nd equation by -3 to get -6x - 3y = -72
Now 4x + 3y = 56
-6x - 3y = -72
-2x = -16
x = 8
Substitute x = 8 into the 2nd equation
2(8) + y = 24
16 + y = 24
y = 8
Check: Substitute the values into the 1st equation
4(8) + 3(8) = 32 + 24 = 56 So we have the correct values for x and y
(c) One lorry travels from your town to another town. The lorry reaches a top speed
of 90 km/h, but its average speed between the towns is only 66 km/h.
Why is the average speed less than the top speed?
Answer:
The average speed is 24 km/h less than the top speed of the lorry.
Step-by-step explanation:
The top speed of the lorry is the highest speed reached during transit, while its average speed is the mean speed attained
Given:.
Top speed of the lorry = 90 km/h
Average speed of the lorry = 66 km/h
Then,
The difference between the speed reached = top speed - average speed
= 90 - 66
= 24 km/h
Therefore, the average speed is 24 km/h less than the top speed of the lorry.
Which of these numbers is equivalent to n n in this equation?
10 1/6 − n = 4 5/12
A: 6 4/6
B: 5 4/6
C: 5 3/4
D 5 1/12
Answer:
The answer is C
Step-by-step explanation:
5 3/4 + 4 5/12 is 10 1/6
Collectively, what are the interest costs and other fees for using a credit card called? A. balance B. credit line C. finance charge Reset Next
The correct answer is C. Finance charge
Explanation:
A credit card is a service offered by financial entities such as banks that allows customers to buy goods and pay them later. This implies the customer does not immediately for goods but pays for these after a specific time. The use of this benefit implies related costs such as fees for the use of the credit card, and interest costs (money charged for borrowing the money from the bank), which are known as finance charge or the money charged for the benefit of using credit. According to this, the correct answer is C.
Please answer ASAP!
Which proportional relationship has the greatest rate of change?
Answer:
Option (1) ; y = 7x
Step-by-step explanation:
(1) reads y = 7x, a line with slope 7, therefore the rate of change in this is 7
(2) says that y increases 12 units every time that x increases 4 Then the rate of change is: (increase in y / increase in x = 12/4 =3
(3) shows a table from which we can see that an increase of y in 8 corresponds to an increase of x in 2: rate of change = (8 - 0) , (2 - 0) = 4
(4) shos a line with slope (rate of change) given by: (12 - 0) / (2 - 0) = 12/2 = 6
Therefore, the greatest rate of change is shown by the first expression
y = 7 x
How many solutions does y - 13 =5x
Y - 5x =12
Show all work
A no solution
B one solution
C infinity solutions
9514 1404 393
Answer:
no solutions
Step-by-step explanation:
Subtract the second equation from the first:
(y -13) -(y -5x) = (5x) -(12)
5x -13 = 5x -12 . . . . . . simplify
0 = 1 . . . . . . . . . . . . . . .add 13-5x to both sides
No value of the variable will make this statement true.
There is no solution.
2y = x - 4
4x + 3y = 5
Answer:
the answer is, {x,y} ={2,1}
Step-by-step explanation:
1) 4x - 3y = 5 2) x + 2y = 4 3) 4•(-2y+4) - 3y = 5 4) - 11y = -11 5) 11y = 11 y = 1 6) x = -2y+4 y = 1 7) x = -2(1)+4 = 2 = {x,y} = {2,1} !!!
The surface area of a cube is 216x4 square units. The length of each
edge of the cube is
(216/6 x^4) 1/2
units. Which of these is equivalent to
the length of each edge of the cube?
no
tep-by-step explanation:
76/9870
Lillian and Isabella went shopping for school supplies. Lillian found her favorite notebook on sale so she bought three of the exact same notebook. Isabella also wanted a notebook. She bought one of the same notebooks that Lillian bought. Both girls started shopping with the same amount of money. If Lillian spent all of her money and Isabella had $5 left, how much money did each girl have when she arrived at the store? please show your work/steps
Answer:
Each girl had $7.50 when they arrived.
Step-by-step explanation:
We have to figure out what c (cost of each notebook) is first before we find out how much money each girl had. We also know they have the same money, so both sides are connected. The equation should be: 3x = x + 5.
3x = x + 5
First, subtract x from both sides. This cancels out the addition by x.
3x - x = 5
Now, subtract x from 3x. This equals 2x.
2x = 5
To cancel out the multiplication by 2, divide both sides by 2.
x = 5/2
Lastly, divide 5 by 2 to get 2.5.
x = 2.5
Substitute x for 2.5 in the earlier equation (3x = x + 5)
3(2.5) = 2.5 + 5
First, multiply 3 by 2.5 to get 7.5.
7.5 = 2.5 + 5
Add 2.5 to 5 to get 7.5.
7.5 = 7.5
Both sides are equal so we have our answer. So, both girls had $7.50 when they arrived at the store.
what is the answer?
Answer:
I think it is C. Hope this helps!!! PLEASE MORK ME AS BRAINLYEST PLEZZZ
The equation shows the relationship between x and y. Y=7×+9. What is the slope of the equation
Answer:
m=7
Step-by-step explanation:
Один острый угол прямоугольного треугольника равен 30".
Найдите угол между высотой и биссектрисой, проведенными
из вершины прямого угла
Answer:
speak English I don't understand your letter?and what your question?
Sue is making a square blanket. She has 169 square feet of fabric for the blanket. How long will one side measure when she completes the blanket?
Answer:
13
Step-by-step explanation:
Area = 169
Square Blanket Area = 169
What is the answer to Rx+12r+8r
Answer: Rx + 20r
Step-by-step explanation:
Is this expression equivalent to 1.5?
0.15 x 100
False
We can simplify the expression to be sure: 100 * 0.15 = 15
Answer:
No
Step-by-step explanation:
You can do this in two ways-
You can multiply 0.15 and 100, and you will get 15.
-OR-
You can move the decimal points two places to the right since 100 has two zeros. (You could move it to the right three if it were 1000 because it has three 0s)
I’ll give 30 points PLEASE HURRY Find the slope of the given ordered pairs: (-1,5) (2,-4)
Answer: 2/3
Step-by-step explanation:
Answer:
m=−3
Step-by-step explanation:
10/11 x 7/9 x 1/2 help meh!
Answer:
35/99 or .35 repeating
Step-by-step explanation:
just multiply
Answer:
35/99
Step-by-step explanation:
Multiply and you'll get 35/99 0.35 with a line above 35 which means repeating
Paul makes 6 stacks of cans on a shelf in his kitchen. He puts 2 cans in each stack. Which equation and answer show the total number of cans?
Please help me ................
Answer: AAS
Step-by-step explanation:
Does anyone knows how much is 3x X x? Plz help
What is the difference between an issue and a claim?
Answer:
A claim persuades, argues, convinces, proves, or provocatively suggests something to a reader who may or may not initially agree with you.
a matter that is in dispute between two or more parties OR the point at which an unsettled matter is ready for a decision
Step-by-step explanation:
Kayla left a pile of gummy bears in the sun. After several hours 12 melted. This accounted for 40% of the total number. How many gummy bears did she leave in the sun?
Answer:
please find attached pdf
Step-by-step explanation:
calculate the scale factor will mark branylis
Answer:
I think it is D. K= 11/2
A number increased by 20% becomes 227. what is the number?
Answer: I think it's 272.4
Step-by-step explanation: hope it helps thx for the free points :)
Find the volume of a cylinder with a radius of 5cm and a height of 3cm
Answer: 235.5
Step-by-step explanation:
CYLINDER VOLUME FORMULA
V = pi * r^2 * h
V = 3.14 * 5^2 * 3
V = 3.14 * 25 * 3
V = 3.14 * 75
V = 235.5
Answer:
235.62
Step-by-step explanation:
formula: V=π[tex]r^{2}[/tex]h=π·[tex]5^{2}[/tex]·3
what is the scale factor of triangle abc and triangle def
Answer:
The answer is 6
Step-by-step explanation:
ABC is 72, 66, 42 and DEF is 12, 11, 7
simply divide the largest shape measurements by the smaller one.
72÷12
66÷11
42÷7
you get 6 in all of them, this technique may not work all the time.
Find the rational zeros of 2x3 + 3x2 – 11x - 6
Answer:
(2x+1)(x−2)(x+3)
Step-by-step explanation:
2x3+3x2−11x−6
2x3+3x2−11x−6
=(2x+1)(x−2)(x+3)
Answer:
-1/2
2
-3
Step-by-step explanation:
The data set shows how many points mark scored in each basket ball game he played this seasons. 1,4,4,5,5,8,8,10,11,11,14,15,16
Answer:
Mean: 8.62
Median: 8
Step-by-step explanation:
I'm guessing that what you need is the mean or median so
1+4+4+5+5+8+8+10+11+11+14+15+16=112
112/13=8.62
Mean: 8.62
Median: 8