Answer:
= 15.866%
Step-by-step explanation:
The class average on a math test was 80.3 and the standard deviation was 5.7.
What percentage of the class scored above a 86?
We solve using z score formula
z = (x-μ)/σ, where
x is the raw score = 86
μ is the population mean = 80.3
σ is the population standard deviation = 5.7
Hence:
z = 86 - 80.3/5.7
z = 1
Probability value from Z-Table:
P(x<86) = 0.84134
P(x>86) = 1 - P(x<86) = 0.15866
Converting to Percentage
= 0.15866 × 100
= 15.866%
Therefore, the percentage of the class scored above a 86 is 15.866%
If the area of the rectangle shown is given by the expression 3x2 + 72 - 6and the width is (a + 3), which of the
following would represent the length? Remember: A = lw (Hint: Box method multiplication may be helpful here!)
Answer:
3x - 2.
Step-by-step explanation:
The length = area / width.
The area 3x^2 + 7x - 6 = (3x - 2 )(x + 3)
so the length = (3x - 2 )(x + 3 ) / x + 3
= 3x - 2.
HELPPPP PLEASE !!!!!!!!!!!!!!
Answer:
113°
Step-by-step explanation:
triangles add up to 180°
180° - 34° - 33° = 113°
==============================================
Explanation:
For any triangle, the three interior angles must add to 180 degrees
34+33+x = 180
x+67 = 180
x = 180-67 ... subtract 67 from both sides
x = 113
This triangle is obtuse because the 113 degree angle is larger than 90 degrees. Also, the triangle is scalene because all three angles are different values (consequently, it means all three sides are different from one another).
Rearrange x=3g+2 to make g the subject.
Answer:
3g = x - 2
Step-by-step explanation:
x = 3g + 2
3g + 2 = x
3g + 2 - 2 = x - 2
3g = x - 2
Can someone help me with this question ?
Answer:
The input is x2
Step-by-step explanation:
1*2=2
4*2=8 and the rest go on
Kendall scored 3 times as many points as Abdul scored in a basketball game. Otis scored 5 more points than Abdul
scored. The three players scored 45 points all together. How many points did each player score?
Kendall: 24 points; Abdul: 13 points; Otis: 8 points
Kendall: 8 points; Abdul: 8 points; Otis: 8 points
Kendall: 24 points; Abdul: 8 points; Otis: 13 points
o Kendall: 8 points; Abdul: 13 points; Otis: 24 points
Answer: The person above was correct
Step-by-step explanation: :)
Christine runs each lap in 7 minutes. She will run more than 35 minutes today. What are the possible numbers of laps she will run today?
Use n for the number of laps she will run today.
Write your answer as an inequality solved for n.
Answer:
5 laps
Step-by-step explanation:
35\7
= 5
Therefore your ans is 5
A delivery truck is transporting boxes of two sizes: large and small. The combined weight of a large box and a small box is 90 pounds. The truck is transporting 50 large boxes and 65 small boxes. If the truck is carrying a total of 4950 pounds in boxes, how much does each type of box weigh?
Answer:
small = 30 pounds
large = 60 pounds
Step-by-step explanation:
two equations can be derived from the question
x + y = 90 eqn 1
50x + 65y = 4950 eqn 2
x = small box
y = big box
multiply equation 1 by 50
50x + 50y = 4500 eqn 3
subtract equation 3 from 2
15y = 450
y = 30
substitute for y in equation 1
y = 60
My son needs help on this ASAP. Greatly appreciated.
Answer:
x = 20 degrees
y = 128 degrees
Step-by-step explanation:
First, lets solve for x:
3x-8 = 2x + 12
x = 20 degrees
Let's check our work:
60 - 8 = 40 + 12
52 = 52
Now, lets solve for y:
360 - 104 = 256
Why 360? Because 360 degrees = full circle
256/2 = 128 degrees
y = 128 degrees
Why divided by 2? Because there are 2 parts that are equal (y)
Hope this helps! Sorry for the late answer!
--Applepi101
What is the area of Triangle EFG? Please help- Geometry isn't my best subject. Immediate answers are appreciated.
Answer:
12
Step-by-step explanation:
(5×6)-½(3×6 + 2×4 + 2×5)
=30 - ½(18+8+10)
= 30 - ½(36)
=30-18= 12
someone answer this please!!!! A lot of points for answering.
Answer: 536.142 in^2
Step-by-step explanation:
trust the loli dragon jesus
PLS PLS HELP ASAP!!!
Answer:
2 1/4
Or as a fraction
9/4
Write down a number that is a multiple of both 4 and 9
Answer:
36
Step-by-step explanation:
See attached photo, calc ab, please show work too!
Answer:
(B) 15
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
FunctionsFunction NotationCalculus
Derivatives
Derivative Notation
Derivative Rule [Chain Rule]: [tex]\displaystyle \frac{d}{dx}[f(g(x))] =f'(g(x)) \cdot g'(x)[/tex]
Step-by-step explanation:
Step 1: Define
h(x) = f(g(x))
h'(1) = ?
Step 2: Differentiate
Chain Rule: h'(x) = f'(g(x)) · g'(x)Step 3: Evaluate
Substitute in x [Derivative]: h'(1) = f'(g(1)) · g'(1)[Values] Substitute in function values: h'(1) = f'(3) · -3[Values] Substitute in derivative function values: h'(1) = -5 · -3Multiply: h'(1) = 15Topic: AP Calculus AB/BC (Calculus I/II)
Unit: Derivatives
Book: College Calculus 10e
This petite girl, short as can be is gonna jump and be free
-Rachie [My R]
for god sake pls are you serious?! i just can't believe! for a st...upi...d reason you got here before me?!? are you upset cuz you can't have what you wanted?!
2 x + 3/4 - 3 x - 2/5 - 6 x - 5/20 less than or equal to - 13/5
Answer:
2x + 3/4 - 3x - 2/5 - 6 x - 5/20 is less than 13/4
Step-by-step explanation:
Do you want to know how I know it's because it equals −8
In triangle ABC; AB = 5BC = 8 8. and AC = 7 Name the largest angle of triangle ABC
BCA necau u must add the 3 together
h(x) = 12 - 5x
p(x) = 2x
Find (h+g)(x)
are you sure h + g?
there is no g in your question..there's h and p
please help with these questions and show how u found them i will mark you brainliest
Answer:
5(x+8)
5x+8x
5x+40
6q+2+3q+5
9q+7
Answer:
1. 5x + 40
to get this answer i multiplied the 5 to the variables in the parenthesis
2. 9q +7
to get this answer i added the variables that were similar., one pair has q at the end and the other does not.
In the system of equations 4x + 2y = 10 and 12x - 3y = 3, what is the solution?
Hint: SOLVE BY ELIMINATION
Answer:
solution = (3, 11)
Step-by-step explanation:
4x + 2y = 10
*subtract 4x from both sides*
2y = -4x + 10
*divide by 2* --> y = -2x +5
12x - 3 y = 3
*add 3y to both sides*
12x = 3y + 3
*subtract 3 form both sides*
12x - 3 = 3y
*divide by 3* --> y = 4x - 3)
2x + 5 = 4x - 1
*subtract 2x form both sides*
5 = 2x -1
*add 1 to both sides*
6 = 2x
*divide by 2x* --> x = 3
y = 2(3) + 5 (plug in 3 for x to solve for y)
y = 6 + 5
y = 11
True or false: a polygon must have at least two sides.
Answer:
False, A polygon must have at least 3 sides.
Step-by-step explanation:
A polygon must have at least 3 sides. Not at least 2 sides.
A polygon must have at least three sides so the statement that a polygon must have at least two sides is false.
We have,
A polygon is a closed figure formed by straight lines called sides.
By definition,
A polygon must have at least three sides.
A polygon with only two sides would be classified as a line segment, not a polygon.
Thus,
A polygon must have at least two sides is false.
Learn more about polygons here:
https://brainly.com/question/28276384
#SPJ6
What kind of triangle is this?
Answer:
acute triangle
Step-by-step explanation:
all angles are less than 90 degrees
hope this helps!! :D
Answer:
acute triangle
Step-by-step explanation:
in figure measures are less than 90° so acute triangle
ANSWER BOTH!!!
A. An item is regularly priced at $65. Bill bought it at a discount of 20% off the regular price. How much did Bill pay?
B. The wholesale price for a pillow is $4.50. A certain department store marks up the wholesale price by 40%. Find the price of the pillow in the department store.
Round your answer to the nearest cent, as necessary.
Answer:
A = $52.00B = $6.30Step-by-step explanation:
A. How much Bill paid AFTER the discount.Step 1: Convert the discounted percent to decimal
20% = 0.2
Step 2: Multiply the discount to the item regularly priced
0.2(65.00) = 13
So, Bill received a $13 discount, therefore, the amount he paid AFTER his discount is:
Step 3: Subtract the result (the discount Bill received) from the regular price
$65.00 - $13.00= $52.00
Therefore, Bill paid $52.00
B. The price of the pillow in the department store.Step 1: Multiply the wholesale price for a pillow by the marked-up the wholesale price
$4.50 × 40% = 1.8
Set up a fraction[tex]\frac{4.50}{x}=\frac{100\%}{40\%}[/tex]
The reciprocal of both sides gives[tex]\frac{x}{4.50}=\frac{40}{100}[/tex]
x = 1.8
Step 2: Add the result to the wholesale price for the pillow
4.50 + 1.8 = $6.3
Step 3: Round to the nearest cent
Add a zero behind the result = 6.30
Therefore, the price of the pillow in the department store is $6.30
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
Answer:
B. (2, 1/64)
Hope this helps!
Question 30
What is the distance between points (-3,5,-7) and (2,-4, 6)?
Answer:
-5,4
Step-by-step explanation:
HELP ASAPPP! only need the rate of change
Answer:
3/1
Step-by-step explanation:
rise/run, from P, Q, and R the slope goes to the left once and up 3 so the slope or rate of change is 3/1
please help me with this and ill offer u 63 points lol
Answer:
The volume and surface area of this square pyramid is approximately 277.33 [tex]m^3[/tex] and 281.6 [tex]m^2[/tex] respectfully.
Step-by-step explanation:
To find the volume of a pyramid, you need to multiply the base area by the vertical height and divide it by 3. In this case, the volume of the square pyramid would be [tex]\frac{8*8*13}{3}[/tex] = [tex]\frac{64*13}{3}[/tex] = [tex]\frac{832}{3}[/tex] ≈ 277.33 [tex]m^3[/tex]. If you want to find the surface area of a shape, you have to calculate the area of every side making up the 3-dimensional figure and add them all together to figure out the surface area. In this case, the surface area would be [tex]\frac{13.6*8}{2} *4 + 8^2[/tex] = [tex]\frac{108.8}{2} * 4 + 64[/tex] = [tex]54.4 * 4 + 64[/tex] = [tex]217.6+64[/tex] = 281.6 [tex]m^2[/tex]. So the volume of the square pyramid would be approximately 277.33 [tex]m^3[/tex], and the surface area is 281.6 [tex]m^2[/tex].
Helpppp meee i need itt! ahh *megan voice*
Answer:
B
Step-by-step explanation:
Roots from trees hold soil particles together, so it'll be more vulnerable to erosion.
Answer:
B
me big brain
3 Edward is scuba diving. He stops 14.3 m below the surface to look at a fish.
Then he swims down 5.8 m to look at a reef. He then swims up 3.2 m.
Which is the best approximation of Edward's current position relative to
the ocean surface?
CONS
Should
subtract
A 12 meters
B 11 meters
C-17 meters
D-23 meters
Dara chose B as the correct answer. How might she have gotten that answer?
Answer:
a. 12 metersStep-by-step explanation:
po ang sagot ko po
#CARRY ON LEARNINGIf ABCDE is reflected across the line y=-1, then reflected again across they
axis, what are the new coordinates of point B?
E.
•B
o
*C
O A. (-4,-2)
O B. (-4,-4)
O C. (6,2)
OD. (-6,-2)
Answer:
B (-4,-4)
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Since it is currently at (4,2), reflecting it across y=-1 will bring the y-coordinate down to -4. After that, reflecting it across the y-axis will flip the sign in front of the x-coordinate, so 4 to -4. Therefore, your answer is (-4,-4).
find the value of sin30+tan^(2)60+sec^(2)45
Answer:
Step-by-step explanation:
sin 30+tan²(60)+sec²(45)
=1/2+ (√3)^2+(√2)²
=1/2+3+2
=5 1/2
=5.5