The mean score on a physics test was 75 points. Amy’s score was 67 points, which was 2 standard deviations below the mean. What is the variance of the data set?
Answer:
D.16
Step-by-step explanation:
took the Unit test 100%
Answer:
D
Step-by-step explanation:
Please help 10 pts given
Answer:
6.50 per mile
Step-by-step explanation:
PLEASEEE ANSWERR
Which steps show how to use the distributive property to evaluate 7 · 88?
A. 7(88)=7(90 - 2) = 7.90-2 +630 – 2 = 628
B. 7(88)= 7(90 - 2) = 7.90-7.2 = 630 – 14 = 616
C. 7(88)=7(90 - 2) = 7.90 +7.2 = 630 + 14 = 644
D.7(88)=7(90 - 2)=7.90 - 90.2 = 630 – 180 = 450
Answer:
b
Step-by-step explanation:
Please anyone help me 38 points
Answer:
An equation for the parabola would be y²=-19x.
Since we have x=4.75 for the directrix, this tells us that the parabola's axis of symmetry runs parallel to the x-axis. This means we will use the standard form
(y-k)²=4p(x-h), where (h, k) is the vertex, (h+p, k) is the focus and x=h-p is the directrix.
Beginning with the directrix:
x=h-p=4.75
h-p=4.75
Since the vertex is at (0, 0), this means h=0 and k=0:
0-p=4.75
-p=4.75
p=-4.75
Substituting this into the standard form as well as our values for h and k we have:
(y-0)²=4(-4.75)(x-0)
y²=-19x
Step-by-step explanation:
GOOD LUCK
PLZZZ HELPPPPPPPPPPP
Answer:
?=6
Step-by-step explanation:
6/9=2/3
6/9 is the non-simplified version of 2/3
Answer:
6/9
Step-by-step explanatiquick mafs
Janet buys a pair of shoes for 50% off the original price of $80. What is the sale price of the shoes?
Answer:
$40
Step-by-step explanation:
Answer:
$40
Step-by-step explanation:
80 divided by 2 = 40 50 %
You are standing at the edge of a cliff. You look down with an angle of depression of 20 degrees and see a a dog at the bottom that is 130 feet away from where you're standing. What is the height of the cliff? Round your answer to the nearest tenth, and round only once.
Answer:
47.3feet
Step-by-step explanation:
The set up will give a right angled triangle.
The distance of the dog away from the cliff = 130 feet = adjacent side
Angle of depression = 20°
Height of the cliff = Opposite = x
Using the SOH, CAH, TOA trigonometry identity;
According to TOA;
tan theta = opposite/adjacent
tan 20 = x/130
Cross multiply;
x = 130tan20
x = 130(0.3639)
x = 47.3 feet
Hence the height of the cliff to the nearest tenth is 47.3feet
help me plez........
Answer:
=12
hope that helped you:)
please make my answer brainiest as im trying get 4 brainiest answers
Need some help with math pleasee
Answer:
whats the question? I ca answer it if you tell me :)
Step-by-step explanation:
Find the missing value if
f(x) = 2.
x=____
NEED HELP ASAP!!!
Answer:
i think its possibly 4
Step-by-step explanation:
Answer:
I think the answer would be 4
Maurice and his father are building a dog house. They are using long pieces of wood and cutting them into smaller pieces. They have a piece of wood that is 3.6 feet long and are cutting it into pieces that are each 0.75 feet. How many smaller pieces will they be able to make?
Answer:
4.8 smaller pieces
Step-by-step explanation:
Total length of wood = 3.6 feet
Length of each piece = 0.75 feet
How many smaller pieces will they be able to make?
Number of smaller pieces of wood = Total length of wood / Length of each piece
= 3.6 feet / 0.75 feet
= 4.8 smaller pieces
Number of smaller pieces of wood = 4.8
Can someone really help me please
Answer:
45-4=41 square units
Step-by-step explanation:
full shape area = 9x5=45
cut rectangle area = 4x1=4
blue shape area = 45-4=41
Two complementary angles have a difference of 22 degrees. What are the two angles?
plz its due in 20 min
Answer:
If two angles sum is equal to 90° and makes right angle called = complementary angle...☺️✌️
Above sum solution....
one angle =x
other angle =y
According to question
x+y= 90°......(1)
x-y=22°......(2)
from one and two ....by eliminating method...
2y=68
y=68/2
y=34
put y in equation 1
x+y=90°
x+34=90°
x=90°-34
x= 56...
To verify add both
sum = 90°
Hence ..verified...
Step-by-step explanation:
hope its helps u...☺️✌️✌️
Answer:
13 degrees
Step-by-step explanation:
5^2 + [15-4(3 1/5)] -15.4
And you have to show your work Bc the dang teacher is strict
Answer:
I think the answer is 11.8
Step-by-step explanation:
25+ [ 15- 4 x 16/5] - 15.4
25 +[ 15- 4/1 x 16/5] - 15.4
25+ [ 15 - 20/5 x 16/5] - 15.4
25 +[ 15 - 64/5] - 15.4
25+ [ 15/1 - 64/5] - 15.4
25+ [75/5 - 64/5] - 15.4
25+ 11/5 - 15.4
25+ 2.2 - 15.4
27.2 - 15.4
11.8
Solve the system of equations by SUBSTITUTION
y=11+4x
3x+2y=0
Answer:
x=-2, y=3
Step-by-step explanation:
substitute 11 + 4x into the second equation for y
3x + 2(11+4x) =0
3x +22+8x=0
11x=-22
To solve for y: y=11+4(-2)
Jill has 15 oranges and 12 pears. She wants to put all of the fruit into baskets with each basket having the SAME NUMBER of pieces of fruit in it. Without mixing the fruit, what is the GREATEST number of pieces of fruit Jill can put in each basket?
1+1??????????????????????????????????????????
Answer: 2
Step-by-step explanation: 1+1=2
Answer:
1+1=2 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Step-by-step explanation:
The diagonals of quadrilateral ABCD
intersect at E
. If EC=4, BD=12, AE=x,
and BE=y
, what values of x
and y
would prove that the quadrilateral is a parallelogram?
Answer:
Step-by-step explanation:
16 ae =x
The values of x
and y that would prove that the quadrilateral is a parallelogram are 4 and 6 respectively.
Find the diagram attached. In order to prove that the quadrilateral is a parallelogram, we need to find the values of x and y that make the diagram a parallelogram.
From the parallelogram;
AE = EC and BE = EDBD = BE + EDAC = AE + ECGiven the following parameters
EC=4,
BD=12,
Since AE = EC, hence the measure of AE is 4.
Similarly, BD = BE + ED
BD = BE + BE
BD = 2BE
12 = 2BE
BE = 6 = y
Hence the values of x
and y that would prove that the quadrilateral is a parallelogram are 4 and 6 respectively.
Learn more about parallelograms here: https://brainly.com/question/12825816
12- [3 - (13) * 2]
I need work shown
Answer:
35
Step-by-step explanation:
Answer:
12−(3−(13)(2))
=12−(3−26)
=12−(−23)
=35
Step-by-step explanation:
If a line started at the point (0, 5) and has a slope of 4, what is the equation of the line?
A. y=4x+0
B. y=5x+4
C. y=4x+5
D. 0x+4
Answer:
C. y=4x+5
Step-by-step explanation:
please it’s an emergency
Answer: C
Step-by-step explanation:
Okay first set a comparison since the two triangles are similar
x-1/20=x-1+27/3x+8
x-1/20 = x+26/3x+8
cross multiply
20x+520=3x^2+8x-3x-8
3x^2-15x-528=0
3(x^2-5x-176)=0
im kinda lazy to factor this out so i used an online calculator right here but factor it out like a good kid
x=16, x=-11
it has to be positive so x=16
C
Determine the area of the shaded region below.
Answer:
the answer is 19square units
Answer:
big square -small rectangle
(5×5)-(2×3)
25-6
19 sq units
Can I PLEASE GET SOME HELP FROM SOMEBODY ANYBODY for these questions 26,43,44,45 PLEASE
Answer:
sure
Step-by-step explanation:
f(x)=x^2-5x
f(4)=
Please help.!!
show work also
-5x + 4y = 3
x = 2y - 15
solve for x and y
I'm failing please send help
Answer:
Let's solve for x.
−5x + 4y = 3
Step 1: Add -4y to both sides.
−5x + 4y+ −4y =3+ −4y
−5x = −4y +3
Step 2: Divide both sides by -5.
-5x divided by 5 = -4y+3 divided by -5
x=4/5y + −3/5
Step-by-step explanation:
Select the correct answer. What is[tex]\sqrt{192}[/tex] in simplest form? A.32√3 B.3√8 C.8√3 D. 2√48
Answer:
C. 8√3
Step-by-step explanation:
Please mark me as brainlest!
Thanks!
48√2 in the simplest form of the expression √192.
Option D is the correct answer.
What is an expression?An expression contains one or more terms with addition, subtraction, multiplication, and division.
We always combine the like terms in an expression when we simplify.
We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.
Example:
1 + 3x + 4y = 7 is an expression.com
3 + 4 is an expression.
2 x 4 + 6 x 7 – 9 is an expression.
33 + 77 – 88 is an expression.
We have,
We can simplify the √192 by factoring it into its prime factors:
192 = 2 × 2 × 2 × 2 × 2 × 3 × 3
Then, we can group the prime factors into pairs of two:
192 = (2 × 2) × (2 × 2) × (2 × 3) × 3
Simplifying each pair of factors under the square root gives:
[tex]\sqrt{192} = \sqrt{(2\times2)}\sqrt{(2\times2)}\sqrt{(2\times3)}\sqrt{3}\\= 4\times4\times\sqrt{6}\sqrt{3} \\= 16\sqrt{6}\sqrt{3}[/tex]
Finally, we can simplify the expression by multiplying the coefficients and combining the square roots:
[tex]16\sqrt{6}\sqrt{3} \\= 16\sqrt{18} = 16\sqrt{2\times3\times3} \\= 16\times3\sqrt{2} \\= 48\sqrt{2}[/tex]
Therefore,
48√2 in the simplest form of the expression √192.
Learn more about expressions here:
https://brainly.com/question/3118662
#SPJ7
Enter the value of 56+(−23)−(−3)
Answer:
36
Step-by-step explanation:
Answer:
36
Step-by-step explanation:
56-23+3=
=33+3=
=36
a=3/a+2
Answer please ?
kkakskkskszlkzkzsiksks
what’s the answer to :
12x+8x+3+x ?
Answer:
[tex]21x+3[/tex]
Step-by-step explanation:
[tex]12x+8x+3+x[/tex]
Collect like terms
[tex](12x+8x+x)+3[/tex]
Simplify
[tex]21x+3[/tex]
PLEASE MARK ME AS BRAINLIEST
uhhh if you get all of these correct ill gib banana
Answer:
For the first one, I believe it's RT and TV - ST and TU
Second one, first and second answer.
And third is SSS I believe
Really hope this helps you out, I struggle a bit in Geometry as well, so I get what you're going through