Answers
Answer:
25
Step-by-step explanation:
In this it's going to be pretty simple.
[tex]b^{2}[/tex] is going to be -3 * -3 = 9
When you have a square you multiply the number by itself.
So
9 - 4 * 1 * -4
here you have to remember order of operations.
Please - Parens
Excuse - Exponents
My - Multiplication
Dear - Division
Aunt - Addition
Sally - Subtraction.
Multiplication and Division are done at the same time left to right
Addition and Subtraction are done at the same time left to right.
So
9 - 4 * 1 * -4
You do the multiplication first.
4*1 = 4
4 * -4 = -16
Now you have
9 - - 16
This turns into
9 + 16
your answer is 25.
Related Questions
Select the correct answer. What is 2 1/2 divided by 1/3? A. 3 1/2 B. 7 1/2 C. 7 1/6 D. 2/15
Answers
The answer is:
7 1/2
Hope this helped :)
Answer:
the answer is 7 and a half so it would be B
given a population mean of 27.1 with a standard deviation of 8.4 and a sample size of 10, answer these questions.
part A: what is the standard deviation of the sampling distribution of x hat? show your work.
PartB: what does the sample size need to be if you want the standard deviation of the sampling distribution of x hat to be 2.8? show your work.
Answers
Answer:
a) 2.66
b) 9
Step-by-step explanation:
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
part A: what is the standard deviation of the sampling distribution of x hat? show your work.
We have that [tex]\sigma = 8.4, n = 10[/tex]. So
[tex]s = \frac{\sigma}{\sqrt{n}} = \frac{8.4}{\sqrt{10}} = 2.66[/tex]
PartB: what does the sample size need to be if you want the standard deviation of the sampling distribution of x hat to be 2.8?
This is n when [tex]s = 2.8[/tex]. So
[tex]s = \frac{\sigma}{\sqrt{n}}[/tex]
[tex]2.8 = \frac{8.4}{\sqrt{n}}[/tex]
[tex]2.8\sqrt{n} = 8.4[/tex]
[tex]\sqrt{n} = \frac{8.4}{2.8}[/tex]
[tex]\sqrt{n} = 3[/tex]
[tex](\sqrt{n})^2 = 3^2[/tex]
[tex]n = 9[/tex]
lan often takes his dog to the park. He estimates that 30% of the other dogs
he sees are retrievers, 20% are terriers, and 20% are German shepherds. He
designs a simulation.
Let 0, 1, and 2 represent retrievers.
Let 3 and 4 represent terriers.
Let 5 and 6 represent German shepherds.
Let 7, 8, and 9 represent other dogs.
The table shows the simulation results.
Answers
Answer:
0.60 if it is shepherd!
Step-by-step explanation:
Given that 1 gallon is equal to 8 pints, how many pints are in 8 gallons?
Answers
Answer:
64 pints in 8 gallons :))
Due to your severe pain, the doctor tells the nurse to give you 825 mg of pain medicine every 6 hours. You also hear the nurse say that the medication comes in 250-mg tablets. How many tablets should she give you every 6 hours? (Round to tenths, if necessary.)
Answers
Answer:
3
Step-by-step explanation:
divided 825 by 250 which give you 3.3
The math is 825 divided by 250 is 3.3.
Find two consecutive numbers whose sum is 55
Answers
Answer:
27 and 28
Step-by-step explanation:
Answer and Step-by-step explanation:
27 and 28.
27 plus 28 equals 55.
To know which numbers to use, we have to find two numbers that would produce a number that would include the digit of the second number in 55. Then, we find numbers that add up to 5, then minus by 1.
#teamtrees #WAP (Water And Plant)
Which of the following coordinates is in the solution set of this system?
A. (0,0)
B. (-5,3)
C. (8,-8)
D. (1,-4)
E. (2,-5)
Answers
Answer:
B.
Step-by-step explanation:
Answer:
b ceguro
pa heart din plss
1. Oceanside Bike Rental Shop charges $16 plus $6 an hour for renting a bike. Melanie paid $70 to rent a bike. How many hours did she pay to have the bike checked out? Select the correct equation to represent this situation.
A) 16x+6x=70
B) 16+ 6x=70
C) 16x+6=70
2. Jason bought 9 new baseball trading cards to add to his collection. The next day his dog ate half of his collection. There are now only 42 cards left. How many cards did Jason start with? Select the correct equation to represent this situation.
A) 1/2(x+9)=42
B) 9x+1/2=42
C) 1/2x+9=42
3. Jason sold half of his comic books and then bought 6 more. He now has 17. How many did he begin with? Select the correct equation to represent this situation.
A) 1/2(x+6)=17
B) 1/2x+6=17
C) 1/2x+6x=17
4. Dan spent half of his allowance going to the movies. He washed the family car and earned $9. What is his weekly allowance if he ended with $15? Select the correct equation to represent this situation.
A) 1/2x+9=15
B) 1/2(x+9)=15
C) 9-1/2x=15
Answers
Answer:
1 = C
2 = B
3 = B
4= C
Step-by-step explanation:
Im not 100% sure but.. i tried
Answer:sike i lied i must provide
Step-by-step explanation: its ez just do it
You are flying 2586 miles from San Francisco to New York.
The pilot looks at the speedometer on the plane and it reads 615 mph. This is a measure of the
a Average Speed
b Instantaneous Velocity
c Average Velocity
d Instantaneous Velocity
Answers
Answer:
Instantaneous Velocity
Step-by-step explanation:
It's instantaneous because the speedometer only shows the plane's current speed.
Please help me
-(8x)^2
-x/4=3
-8x-5=35
-4(z+7)=36
Answers
2. x = -12
3. x = -5
4. z = -16
2 3/4 divided by 1 7/8
Answers
1.46 I used a calculator
Answer: 1.46666667
Step-by-step explanation:
Cisco is building a container for his plants. It is made out of a cube and two cylinders. He plans to paint each surface, but cuts off the top of the two cylinders. He also wants to reinforce all the edges before putting it together. Which one is greater, the number of surfaces he has to paint, or the number edges he has to reinforce
Answers
What is the sale price of a hardcover book with a markdown of 46% and original price of 29.00 what is the discount amount
Answers
Answer:
15.66
Step-by-step explanation:
First you find what is 46% of 29.00 which is 13.34
Next do 29-13.34 and that is 15.66
that is your answer hope I helped. :)
7r+4r+10s what is the answer
Answers
Answer:
11r + 10s
Step-by-step explanation:
Given that L is a linear function, L (5) = 100 and L (9) = 150.
a. Determine the value of L (13)
Answers
Answer:
L(13) = 200
Step-by-step explanation:
Linear function:
A linear function has the following format:
[tex]y = mx + b[/tex]
In which m is the slope(how much y changes when x changes by 1) and b is the y-intercept(value of y when x = 0).
Finding the slope:
L (5) = 100 and L (9) = 150.
The slope is given by the change in the output(L, which is equals to y in the general formula) divided by the change in the input(x).
Change in the output: 150 - 100 = 50
Change in the input: 9 - 5 = 4
Slope: [tex]m = \frac{50}{4} = 12.5[/tex]
So
[tex]y = 12.5x + b[/tex]
L (5) = 100
So [tex]y(5) = 100[/tex], which means that when [tex]x = 5, y = 100[/tex], and we use this to find b.
[tex]y = 12.5x + b[/tex]
[tex]100 = 12.5*5 + b[/tex]
[tex]b = 100 - 12.5*5[/tex]
[tex]b = 37.5[/tex]
So
[tex]L(x) = 12.5x + 37.5[/tex]
a. Determine the value of L (13)
L when [tex]x = 13[/tex]. So
[tex]L(13) = 12.5*13 + 37.5 = 200[/tex]
URGENT NEED ANSWERS •_•
Answers
answer x = -7
10. 9x-3 = 4 + 8x
9x = 7 + 8x
answer x = 7
The attendance at a new weekly exercise class doubled each week until week 4, when it reached its maximum capacity of 24 people
Answers
Answer:
Half Maximum capacity a week 3. And the class started off with 3 people.
Step-by-step explanation:
Will someone please answer these problems?? I need them done ASAP!!!!!!
Answers
Answer:
Step-by-step explanation:
1. 10/15 = 2/3. Similar.
2. 101/151 ≠ 100/150. Not similar.
3. 10/20 = 7/14 = 4/8. Similar
4. 6/3 = 7/3.5 = 7/3.5 Similar
Lucas loses 12 points for every shot he misses in a basketball video game. If Lucas missed 8 shots, how many
points did he lose?
It’s multiplying signed numbers
Answers
Answer:
96
Step-by-step explanation:
Answer:
96
Step-by-step explanation:
8 times 12 is how you get it since he missed 8 and you lose 12 points every shot missed you just have to multiply them
-52=-0.8k need a answer
Answers
Answer:
k is 65
Step-by-step explanation:
isolate the variables by dividing each side by factors that don't contain the variable
Select ALL expressions that are equivalent to 5x−3x−8+4+2x
Answers
Answer:
Where the picture of your work?
The answer is 4 (x-1)
Which of the following is the equation of a line perpendicular to the line y =
-10x+1, passing through the point (5,7)?
Answers
Answer: The answer is C.
Step-by-step explanation: This is because when you solve you get y=1/10x+6.5 this graph runs through the point (5,7) and is perpendicular to y=-10x+1. In order for two equations to be perpendicular their slopes will be the opposite.
I need help with math
Answers
Answer:
6:3
Step-by-step explanation:
A student is taking a true/false quiz with 16 questions. The student has not studied and has an equal chance of answering True or False on each question. What is probability that the student will answer at least 12 questions correctly?
Answers
Chance of success
0.03841 or 3.84%
Step-by-step explanation:
Samuel entered the following key strokes on his calculator. What did Samuel’s calculator display? A. 2.5E – 13 B. 2.5E – 4 C. 2.5E5 D. 2.5E14
Answers
Answer:
Step-by-step explanation:
I believe the answer would be 2.5E14- (D)
I hope that helped!!
In the case above about Samuel, we can say that Samuel's calculator has display option A; 2.5 E (- 13)
What is the calculation about?The function was 5 EE (-) 9 divided by 2 EE 4
5 EE (-) 9/ 2 EE 4
We know that, E implies 10 to rise to power.
So, the equation above is Converted from scientific notation into standard form;
= 5 EE (-) 9/ 2 EE 4
= 5/2 x 10 ⁻⁹⁻⁴
=2.5 x 10⁻¹³
Therefore, In the case above about Samuel, we can say that Samuel's calculator has display option A; 2.5 E (- 13)
Learn more about calculator from;
brainly.com/question/2146941
#SPJ2
please help me
is importe
Answers
Answer:
D.Kelsy has 1 and 5/8 feet more rope
Step-by-step explanation:
(13 1/8 + 21 3/4 ) -35 1/2
34 and 7/8 - 35 and 1/2
=1 and 5/8
Which set of ordered pairs satisfies the equation
f(x)=7x+20
Answers
Answer:
The 2nd one
Step-by-step explanation:
(25m + 22) + (9m) = ?
Answers
Answer:
Step-by-step explanation:
Simplifying
25m + 22 = 9m
Reorder the terms:
22 + 25m = 9m
Solving
22 + 25m = 9m
Solving for variable 'm'.
Move all terms containing m to the left, all other terms to the right.
Add '-9m' to each side of the equation.
22 + 25m + -9m = 9m + -9m
Combine like terms: 25m + -9m = 16m
22 + 16m = 9m + -9m
Combine like terms: 9m + -9m = 0
22 + 16m = 0
Add '-22' to each side of the equation.
22 + -22 + 16m = 0 + -22
Combine like terms: 22 + -22 = 0
0 + 16m = 0 + -22
16m = 0 + -22
Combine like terms: 0 + -22 = -22
16m = -22
Divide each side by '16'.
m = -1.375
Simplifying
m = -1.375
30 kilograms of beans costs $5. How many kilograms of beans can you buy for $20?
Answers
Answer:
120 kg
the kilograms of beans which can by for $20 are
30*(20/5) = 30.4 = 120 (kg)
Answer: 120 kilograms
Step-by-step explanation:
We can buy 30 kilograms of beans for $5 dollars. We need to find how many kilograms of beans we can buy for $20.
The first step is to divide 20 by 5. Then, using the quotient, we can multiply it by 30 to see how many kilograms of beans we can buy for $20.
20 ÷ 5 = 4.
4 x 30 = 120.
Therefore, we can buy 120 kilograms of beans for $20.
Cool beans ;)
what single decimal multiplier would you use to decrease by 7% followed by a 20% decrease
Answers
Answer:
x 0.27
Step-by-step explanation:
if they are both decreasing then just add the two percentages together then divide by 100 to give you your decimal answer
Hope it helped hehe