This question is incomplete, the complete question is;
Consider a set of data in which the sample mean is 73.4 and the sample standard deviation is 4.9. Calculate the z-score given that x = 69.5.
Round your answer to two decimal places.
Answer: the z-score is -0.80
Step-by-step explanation:
Given that;
mean μ = 73.4
standard deviation σ = 4.9
x = 69.5
z-score = ?
z = (x - μ) / σ
we substitute
z = (69.5 - 73.4) / 4.9
z = -3.9 / 4.9
z = - 0.7959 ≈ -0.80 { 2 decimal places }
Therefore, the z-score is -0.80
Please help me with this question
Answer:
5 x 3/4 < 5
2 x 4/3 > 2
6 x 5/5 = 6
4/7 x 1/8 < 4/7
2/5 x 7/7 = 2/5
1/3 x 6/4 > 1/3
4. Jensky is scuba diving while on vacation. Yesterday,he drove to -13.74 feet. Today,he plans to go 4 times as deep. How far is Jensky planning to dive today?
a) - 54.96 ft
b) - 17.74 ft
c) -9.74 ft
d) - 3.44 ft
^answer for me please ?
Answer:
a and b
Step-by-step explanation:
parallel lines are lines that do not intersect each other
The 7th grade basketball team has won 15 games out of the 20 games they have played this season. If they were to keep up this winning ratio, what is the probability they will win their next game?
Answer: 3/4
Step-by-step explanation:
complete the equation of the line whose slope is -2 and y-intercept is (0,-8)
y= ????
Answer:
y = -2x - 8
Step-by-step explanation:
Slope-intercept form is y = mx + b. Slope is m, and y-intercept is b. To do this, we substitute -2 for m and -8 for b. When we do this, we get y = -2x + -8. We can simplify this to y = -2x - 8.
α + 4/5 = 3
Solve for a to make the proportion true
round 427963 to the nearest thousand
Answer:
428,000
Step-by-step explanation:
427,963
If the number behind what number you're trying to round is greater than 4 then the number you're rounding goes up once while everything behind it goes to zero. If it's below 5 than the it well stay the same. Ex. Round nearest tenth--> 14--->10 instead of it going up to 20 it stays 10.
427,963
^
This number is higher than 4 so the number in front or the thousand mark goes up a number.
428,000
Someone else already answered so I figured I'll tell you how to round it, hope this helps.
Simplify.
3y - 4x + 6x - y
The simplified expression is???
Answer:
2y-4x+6x
=2y+2x
Step-by-step explanation:
Answer:
2x+2y
Step-by-step explanation:
Let's simplify step-by-step.
3y−4x+6x−y
=3y+−4x+6x+−y
Combine Like Terms:
=3y+−4x+6x+−y
=(−4x+6x)+(3y+−y)
=2x+2y
A submarine's descent was a change in depth of -6 feet per minute. At this
rate, how much time would it take the submarine to reach a level of 750 feet
below sea level?
In Progress
What is an equation in slope-intercept form of the line that passes through the points (-2,-2) and (1,7)?
A.
y
C-
B. y = 3.0 +4
=
+
olos
O D. = 3.c – 2
Answer: y= D.3x-2
Step-by-step explanation:
how do i write an equation in point-slope form for a horizontal line that passes through(4, –2)??
Answer:
[tex]y = -2[/tex]
Step-by-step explanation:
Given
Horizontal Line
[tex](x_1,y_1) = (4,-2)[/tex]
Required
Determine the equation
The equation is calculated using:
[tex]y - y_1 =m(x-x_1)[/tex]
Where
[tex]m = slope[/tex]
Because the line is a horizontal line, then:
[tex]m = 0[/tex]
Substitute 0 for m and values for x1 and y1 in [tex]y - y_1 =m(x-x_1)[/tex]
[tex]y - (-2) = 0(x -4)[/tex]
[tex]y +2 = 0(x -4)[/tex]
[tex]y +2 = 0[/tex]
Subtract 2 from both sides
[tex]y +2-2 = 0-2[/tex]
[tex]y = -2[/tex]
Hence, the equation is: [tex]y = -2[/tex]
Find the value of x and the measure of the angle labeled 16X".
112
64°
48°
16x
Answer:
[tex]16x = 48\:(vertically\:opposite\:angles)\\ \boxed{x = 3} \\ angle \: measure \: is \: \boxed{48°}[/tex]
A. is the right answer.Answer:
A
Step-by-step explanation:
answer ?????????????
Answer:
x-2
Step-by-step explanation:
9. A cell phone can be purchased from the manufacturer for $160. The online retailer has a
standard markup of 30%, and the store has a standard markup of 40%.
(a)What is the price of the cell phone when purchased online?
(b)What is the price of the cell phone when purchased at the store?
(c) Which is the better deal?
Answer Below
30% of 160 is 48 dollars. Meaning you would take the 48 from 160. Leaving 112.So the 30% mark up would mean you would pay $112.Saving $48.
Take the 160 dollar,and have the 40% to work with. Taking this would be $64. So 160-64 is $96. They will spend $96 on the phone in-store
Purchase online- $112
Purchase in-store-$96
The better deal is in-store
Answer:
(A) $208 (B) 224 (C) the online one. it cost less
Step-by-step explanation:
(A) find 30% of $160 and add it to 160. put that answer in dollars.
(B) find 40% of $160 and add it to 160. put that answer in dollars.
(C) it is the one that costs less
Which algebraic expression is not equivalent to 13x + 10? A 10(x + 1) + 3x B. 4x + 3 + 8x + 7 C. 13 + 2x + 3x – 3 + 8x D. 20x-2 - 7x + 12
Answer:
B is the answer
Try all and see for yourself
Simplify the expression 8+4b+3b+6
Answer:
14+7b
Step-by-step explanation:
8+6=14
4b+3b=7b
Answer:
14 +7b
Step-by-step explanation:
Combine like terms. Like terms have same variables
8 + 4b + 3b + 6 = 8 + 6 + 4b + 3b
= 14 + 7b
What is the simplified form of the following expression?
There are 351 identical plastic chips numbered 1 through 351 in a box. What is the probability of reaching into the box and randomly drawing a chip number that is smaller than 212
212/351
or
211/351
cos less than
URGENT PLEASE!!!!!!!!!!!!
Answer:
i got 178
Step-by-step explanation:
Answer:
its x=16 :)))
(-5b^3) (-3b^6)
Solve the equation
Answer: 15b^9
Explanation:
-5*-3=15
b^3*b^6=b^9
Does this procedure describe a completely randomized design for this experiment?
Answer:
Yes
Step-by-step explanation:
Helppppppppppp me i need the answer
Answer:
Step-by-step explanation:
i think its embryonic
(1/2(7x3))^3= plz help
Answer:
1/2 X 7 X 3 X 3 = 31.5
Step-by-step explanation:
The value of a certain account after t years is given by
B = 600 × 1.2t dollars.
How long will it take for the value of the account to increase to $900? Round your answer to one decimal place.
t =
Answer:
1.2 years
Step-by-step explanation:
The value of a certain account after t years is given by :
B = 600 × 1.2t dollars ....(1)
We need to find how long will it take for the value of the account to increase to $900 i.e. we need to find the value of t.
Put B = $900 in equation (1).
[tex]900=600\times 1.2t\\\\t=\dfrac{900}{600\times 1.2}\\\\t=1.2\ \text{years }[/tex]
So, it will take 1.2 years of the account to increase to $900.
Can some one help me please
Answer:
B
Step-by-step explanation:
x+2+10 is 13 which is the beginning of the perimeter
Two pounds of grapes cost $6. How many pounds of grapes cost $1? *
Step-by-step explanation:
Answer:
1/4
Step-by-step explanation:
Tis will be your answer :D
I need help with solutions
Answer:
10. b 11. b 12. b 13. a 14. b 15. b 16. a 17. a 18. b 19. a 20. a 21. b
Step-by-step explanation:
I'm pretty sure they are all right
10•1/2+(-6)(-3) Simplified in steps
Answer:
23
Step-by-step explanation:
1) (10*0.5)+(-6*-3)
2) (5)+(18) (The 18 isn't negative because of the rule that states "A negative and a negative will become positive"
3) 5+18=23
If you know how, please explain. My brain is splitting in half trying to process this trigonometry stuff
Answer:
[tex]\huge\boxed{\text{E. } \frac{1}{2} }[/tex]
Step-by-step explanation:
When finding the cosine of an angle, we need to note what each terms mean.
Using the acronym SOH CAH TOA, we know that the
Cosine of an angle will be it's
Adjacent side divided by the
Hypotenuse.
The side adjacent to the 60° angle is 1, and the hypotenuse of the triangle is 2. Therefore, the adjacent over the hypotenuse is [tex]\frac{1}{2}[/tex], making the cos of 60°
[tex]\frac{1}{2}[/tex].
Hope this helped!
Martin's car had 86,456 miles on it. Of that distance, Martin's wife drove 24,901 miles,
and his son drove 7,997 miles. Martin drove the rest. How many miles did Martin drive?
Show work.
Answer:
Martin drove 53,558 miles.
Step-by-step explanation:
If you add up the amount of miles his son and wife drove, you get 32,898. To get the answer, you would subtract that from the total number of miles to get 53,558.
