To solve this, we need to use the z statistic. The formula for z score is:
z = (x – u) / s
where x is sample value = less than 90, u is the sample mean = 90.6, s is the standard deviation = 17.2
z = (90 – 90.6) / 17.2
z = -0.035
From the standard distribution tables:
P (z = -0.035) = 0.4860
Therefore there is about 48.60 % chance that it will be less than 90 pounds
can someone help please?
Answer:
a. 90 degrees (given)
b. 270 degrees (360-90)
c. 16π (Circumference= diameter * π, diameter= 2r= 2(8)=16, so c= 16*π)
d. 4π (That section is a semicircle, so length should be 1/4 the circumference)
e. 12π (This section is 3/4 the circumference)
f. 64π (Area= πr^2, and r^2= 8^2= 64, so 64π)
g. 16π (That section is 1/4 the area)
Twenty percent is equal to what decimal?
Answer:
0.05
Step-by-step explanation:
100 POINTS AND BRANLIEST SUPER EASY
For which equation is (4, 3) a solution?
y = x + 3
y = 3 x – 4
y = 2 x – 5
y = 2 x – 1
Answer:
y = 2 x – 5
Step-by-step explanation:
We can check all of them starting with equation 1.
y = x + 3
3 = 4 + 3
3 = 7
NOT TRUE
Equation 2:
3 = 3(4) - 4
3 = 12 - 4
3 = 8
NOT TRUE
Equation 3:
3 = 2(4) - 5
3 = 8 - 5
3 = 3
TRUE!
This means the last equation is not true.
I neeeeeeeeeeedddd help plzzzzzzzzzzzz
Tell me everything you know
about slope!
Plzzzz help
Answer:
In mathematics, the slope or gradient of a line is a number that describes both the direction and the steepness of the line.
Step-by-step explanation:
A slope with a greater absolute value indicates a steeper line. The direction of a line is either increasing, decreasing, horizontal or vertical.
Solve for θ or x, round to the nearest tenth.
twice a number plus 6 is -72 look at the pic please
Answer:
2+6(11)=-72
Step-by-step explanation:
so red and I did it in my head and on calculator
Please help me, I need this ASAP.
60 POINTS
Answer:
Yes the ordered pair is a solution
Step-by-step explanation:
plug on the numbers
2< 2(-1) +8
2 < 6
4(2) > -4(-1)-6
8> 4-6
8> -2
Your father uses text messaging to communicate with his employees. If he sends an average of 19 text messages each day, how many more text messages does he send than you? Write an equation and solve for the unknown value.
Answer:
father sends 7 more
19-12=7
Step-by-step explanation:
Answer:
father sends 7 more
19-12=7
Step-by-step explanation:
19-12=7
Chloe's mom gives her $30 to go to the store for cupcakes. She cannot spend over $30. Each pack of cupcakes (c) cost $2.50. How many packs of cupcakes can Chloe buy?
Twelve packs of paper cost $7.20. Of each pack costs the same, how much does one pack cost?
Answer:
$0.6
Step-by-step explanation:
P means Packs
12P=$7.20
divide both sides by 12
P=$0.6
so 1 pack costs $0.6
how to do inverses marking brainlists
Answer:
Step-by-step explanation:
1) 2-4 = x/8
2) x times 8 = 2+4
I'm not sure about the second one but I hope this works :)
1. 12/5= 2. 27/12 =
-- Help pls
10. The sum of two numbers is 102. One number is three less than twice the other.
What are the two numbers?
Answer:
(2n -3) + n = 102
2n - 3 + n = 102
3n - 3 = 102
3n = 105
n = 35 (the first number)
SO...
The other number is (2 x 35) - 3 =
70 - 3 = 67 (the second number)
The numbers are 35 and 67.
35 + 67 = 102 CHECK!
Cody increased the amount of money he saves each week from $40 to $75. By
what percentage did Cody increase the amount of money he saves?
Answer:
So Cody increase his savings by 87.5%
Step-by-step explanation:
We are given Cody's original savings = $40
We are given his new savings total = $75
Now, in order to find out the percentage we have to first find out by how much did he increase his savings:
Increase in savings = $75 - $40 = $35
So now we have the increase in savings we can find out the percentage:
[tex]increase(\%) \: = \frac{increase \: in \: savings}{original \: savings} \times 100[/tex]
Now we plug in our values that we found:
[tex]increase(\%) = \frac{35}{40} \times 100\\ increase(\%) = 87.5\%[/tex]
So Cody increase his savings by 87.5%
(3, -4), m= 6 point slope
Answer:
If you are looking for the other quordinate the answer is (4,2)
Step-by-step explanation:
[tex]m= \frac{rise}{run} = \frac{6}{1}[/tex] so you will have to start from the giving coordinate to find the next.
So, you go up to 6 and then since the 1 is positive you will turn right one time
PLZ HELP DUE soon x 2/3
Answer:
I think the answer is 2. Hope this helps!
Convert this decimal into its fractional form, simplified completely.
0.125
Answer:1/8
Step-by-step explanation:
If we divide both the top and the bottom by 5 since we know that 125 is a multiple of 5, we get 25/200. Divide both by 5 again to get 5/40 we then simplify to get 1/8.
Identify the initial value-y=3(14)4
Answer:
y = 168
Step-by-step explanation:
y = 3(14) x 4
y = 42 x 4
y = 168
- Find the length of the missing side of the light the
8 cm
15 cm
A.)289 cm
B.)17 cm
C.)23 cm
D.)4.79 cm
Answer: I think its D
Step-by-step explanation:
What is the range of the function shown on the graph above?
Ms. Orozco's class has 8 boys and 12 girls in the class. What is probability of choosing a girl?
Answer:
12/20 = 3/5
Step-by-step explanation:
hope this helps
please help, and i will mark you BRAINLIEST
If x = 4, solve this equation: 3x = ______? *
A. 14
B. 8
C. 16
D. 12
Use the Distributive Property to write an expression that is
equivalent to 4(y - 3).
Answer:
4y-12
Step-by-step explanation:
To multiply a sum (or difference) by a factor, each summand (or minuend and subtrahend) is multiplied by this factor and the resulting products are added (or subtracted).
If the operation outside the parentheses (in this case, the multiplication) is commutative, then left-distributivity implies right-distributivity and vice versa, and one talks simply of distributivity.
The equivalent value of the expression is A = 4y - 12
Given data ,
Let the equation be represented as A
Now , the value of A is
A = 4 ( y - 3)
On simplifying the equation , we get
A = 4 ( y - 3 )
So , the left hand side of the equation is equated to the right hand side by the value of A = 4 ( y - 3 )
Opening the parenthesis on both sides , we get
A = 4 ( y - 3 )
Using the distributive property , we get
A = 4 ( y ) - 4 ( 3 )
On further simplification , we get
A = 4y - 12
Taking the common factor as 4 , we get
A = 4 ( y - 3 ) = 4y - 12
Therefore , the value of A = 4y - 12
Hence , the expression is A = 4y - 12
To learn more about equations click :
https://brainly.com/question/19297665
#SPJ6
BRAINLIEST FOR THE RIGHT ANSWER..... EMERGENCY
Marcie pays someone to clean the salon. She pays them $15.00 per hour. She offers them a 3% raise on their hourly pay. How much will she now pay them per hour?
Answer:
$15.45 i believe
Step-by-step explanation:
3% of 15 is 0.45. add 0.45 + 15 = 15.45
Answer:
$12:00
Step-by-step explanation:
I DONT GET THIS HELPPP
Answer:
The answer is B: so 9
Step-by-step explanation:mark me brainlest and like
Explain the steps when solving for the variable y
12x+2y=18
Answer:
Simplifying
12x + 2y = 18
Solving
12x + 2y = 18
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-2y' to each side of the equation.
12x + 2y + -2y = 18 + -2y
Combine like terms: 2y + -2y = 0
12x + 0 = 18 + -2y
12x = 18 + -2y
Divide each side by '12'.
x = 1.5 + -0.1666666667y
Simplifying
x = 1.5 + -0.1666666667y
Answer:
Hi
Step-by-step explanation:
First, you need to subtract both sides by 12x
12x+ 2y=18
-12x -12x
That will give you: 2y= 18-12x
Next, you need to deviede both sides by 2
2y/2= 18-12x/2
That gives you the answer:
y= 18-6x
(im not 100% sure but i think this is right, feel free to correct me)
Please help
step by step
thank you
Answer:
The answer is 12 of the students will bring lunches
Step-by-step explanation:
To find the total students divide:
32 divided by 8 = 4
Then,
4 X 3 = 12
A triangle is dilated with a center of dilation at the origin. Point P is on the figure and P' is the corresponding point on the image of the dilation. Point P is at (-2, 3) and P' is at (-8, 12). Which rule best represents the dilation? *
Answer:
(x, y) → (4x, 4y)Step-by-step explanation:
Dilation is applied by the rule:
(x, y) → (kx, ky), where k is the scale factorWe have
(x, y) = (-2, 3) and (kx, ky) = (-8, 12)Substitute and solve for k
-8 = -2k and 12 = 3k ⇒ k = 4So the rule is
(x, y) → (4x, 4y)Need help ASAP
Which number line correctly shows -3 - -1.5?
Answer:
The top one I'm pretty sure.
