Answer:
0.25
Step-by-step explanaition:
The z-score represents how many deviations a value is from the mean. When the bar measures 3.25, the z-score is +1. When the bar measures 3.50, the z-score is +2. You'll notice that whenever the bar size increases by 0.25, the z-score goes up +1. So, the standard deviation from the mean must be 0.25.
Heather has 2 less than 5 times the amount of shoes that Donna has. Gina has 1 more than 2 time
amount of shoes that Donna has. Let x represents how many shoe Donna has.
a. Write an expression that represents how many more pairs of shoes Heather has than Gina.
b. Simplify the expression:
c. How many more pairs of shoes does Heather have is Donna has 14 pairs of shoes?
Answer:
a. (5x-2)-(2x+1)
b. 3x-3
c.39
Step-by-step explanation:
WILL GIVE BRAINLIEST.Which is an equation for the line shown?
Given that the area of a rectangle is 4 2/3 in and the length 3 1/2 in find the width
please answer right ill give brainliest
Answer:
20 songs
Step-by-step explanation:
she starts with 20 songs at beginning of year
A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family? (This is actually math)
Answer:
their are 4 sisters and 3 bothers
Solve the problems
9^2
4^3
3^2
2^3
5^2
Answer:
81649825Step-by-step explanation:
hope this helps!
Find the amount of sales tax if the sales tax rate is 5% and the cost of the winter coat is $40. Hint: this question is only asking for the sales tax.
Answer:
40/100*105 = 42
42 - 40 = 2
$2 sales tax
By what percent will the product of two numbers increase if one of them is increased by 30% and the other is increased by 60%?
Answer:
90%
Step-by-step explanation:
Marie and her family are on a trip. So far, they have traveled 175 miles and are 25% of the way to their destination. How many total miles will they travel?
44 miles
700 miles
200 miles
875 miles
Answer:
44
Step-by-step explanation:
We need to divide 175 by 4 since we the percentage is 25%. If you divide, the answer is going to be roughly 44 miles.
You get a GOOD chunk of points for solving. MUST BE 100% SURE OF ANSWER!! NEEDS EXPLANATION!! I WILL MAKE BRAINIEST!!
Jimmy takes 12 minutes to run 6 times around a 600 meter track. Assuming he runs at a constant speed, how long does he take to run 1 kilometer?
Answer:
10/3 minutes
Step-by-step explanation:
12 minutes to run 6 times is the same as 2 minutes to run once (ratios)
so it takes 2 minutes to run once around a 600 m track
so 2 minutes/600m = x minutes/1000m
x = 2/600 * 1000 = 20/6 = 10/3
Answer:
10/3
Step-by-step explanation:
20 points each!!! Heather has 2 less than 5 times the amount of shoes that Donna has, Gina has 1 more than 2 times
amount of shoes that Donna has. Let x represents how many shoe Donna has.
a. Write an expression that represents how many more pairs of shoes Heather has than Gina.
b. Simplify the expression:
c. How many more pairs of shoes does Heather have is Donna has 14 pairs of shoes?
Answer:
A. (5x - 2) - (2x +1)
B. x -1
C. 68
Step-by-step explanation:
Heather = 5 times Donna -2 H = 5D - 2
Gina = 2 times Donna + 1 G = 2D + 1
Plug in D for X and you get
H = 5x -2
G = 2x + 1
If Heather's expression is 5x -2 and Gina's expression is 2x + 1 then to show how many more Heather has than Gina. You have to subtract Gina from Heather.
(5x - 2) - (2x +1)
Now to simplify it, you just combine all the like terms.
5x - 2 - 2x -1 = 3x - 3 and then you can simply this further by dividing all terms by 3. x - 1
To solve how many Heather has if Donna has 14. You substitute 14 for x in Heather's equation. 5 (14) -2 = 70 - 2 = 68
Mr. Winter makes a milkshake with 3 scoops of chocolate ice cream and 2 cups of milk. Ms. Haddad makes hers with 4 scoops of ice cream and 3 cups of milk. Who's milkshake has a stronger chocolate flavor and why?
mr,winter would make a milshake that is stronger in chocolate flavor.
HELPPP!!!!
im not really good at math
im coming for help pleaseeee!!!!
pleaseee be kind and help
Answer:
1) no
2) no
3) yes
4) yes
5) no
6) no
Step-by-step explanation:
Answer and Step-by-step explanation:
1) No. 5m and 3a do not have any common factors.
2) Yes. They have a common factor of 2. So, it could be combined as 2(2 + 2y).
3) Yes. They have a common factor of 2x. So, it could be combined as 2x(4 - 1).
4). Yes. They have a common factor of 5. So, it could be combined as 5(3 + 2).
5). Yes. They have a common factor of t². So, it could be combined as t²(7 + 9t³).
6. Yes. They have a common factor of 3. So, it could be combined as 3(y³ + x⁶).
Hope this helped! <3
Part D
Finally, use decimal numbers to write an expression that represents the net change in Rylee’s bank account balance for her entire shopping trip. Use your answers from parts A through C to guide you.
PART C; The original price of Rylee’s groceries was $23.50. This money is leaving her bank account, so represent the amount with a negative sign:
-$23.50.
Rylee got a 20% discount on her purchase. In other words, she got 20% of her money back. The expression that represents the net change in her bank account is
-$23.50 – (-$23.50 × 0.2).
Further simplify the expression by factoring -$23.50 from both terms:
-$23.50 – (-$23.50 × 0.2)
=
-$23.50(1 – 0.2)
=
-$23.50(0.8).
Answer:
look at explanation
Step-by-step explanation:
PART C; The original price of Rylee’s groceries was $23.50. This money is leaving her bank account, so represent the amount with a negative sign:
-$23.50.
Rylee got a 20% discount on her purchase. In other words, she got 20% of her money back. The expression that represents the net change in her bank account is
-$23.50 – (-$23.50 × 0.2).
Further simplify the expression by factoring -$23.50 from both terms:
-$23.50 – (-$23.50 × 0.2)
=
-$23.50(1 – 0.2)
=
-$23.50(0.8).
The net change to her banking account balance is $83.22.
What is net change?The net change theorem states that when a quantity changes, the final value equals the initial value plus the integral of the rate of change. Net change can be a positive number, a negative number, or zero.
Given that, She spent $36.50 plus 8% tax. (to calculate the tax amount, we have to multiply the cost by the percentage in decimal form)
36.50 x (8/100) =$2.92 (value of tax)
Adding to the original cost
36.50+2.92 = $39.42
Then, she spent $25 to refuel her car at the gas station.
39.42 +25 = $64.42
She bought groceries worth $23.50. At the grocery checkout, she handed over a coupon for a 20% discount on her purchase
23.50 x (20/100) = 4.7 (amount of discount)
Subtracting to the purchase
23.50 -4.7= $18.8
Hence, adding to the total cost.
64.42 +18.8 = $83.22
For more references on net change, click;
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Solve the equations:
1. 9x - 5 = 5x + 7
2. 8x - 2 = x - 16
3. 8x + 5 = 2x + 23
4. 2x + 8 = 5x + 20
5. 5(2x + 6) = 3x - 5
Answer:
5(x – 4) + 3x – 9x = 6 – (2x + 5) + 8x
step1:- 5x - 20 + 3x - 9x = 6 - 2x - 5 + 8x
step2:- 5x + 3x - 9x - 20 = 8x - 2x + 6 - 5
-x - 20 = 6x + 1
stp 3
-20 = 7x + 1
step 4
-21 = 7x
divide both sides by 7:-
-3 = x
thats the solution x = -3
Answer:
1. X=3, 2. X= -2, 3. X=3, 4. X= -4
PLz help btw it all in the question
Answer:
a - a
b - b
c - b
d - a
Step-by-step explanation:
Answer:
A goes to diagram A
B goes to diagram B
C goes to diagram B
D goes to diagram A
I need to find the area, what is it?
heeeeeeelp meeee.......... pleassssssssseeeeeeeeeeeeeee............
Adam wants to buy a $35 shirt. He has $9. After two weeks of saving, he has $15. Three weeks after that, he has $24. If Adam saves money at a constant rate, will he have enough to buy the shirt after 8 weeks? Solve the problem by making a table and then making a graph...
Answer:60
Step-by-step explanation:
The publisher chooses to have front and back covers
with a thickness of
of an 1/3 inch instead.
Write an equation that represents the NEW total width of the book, y, for every 100 pages of paper, x.
Please help!!!!!!!!!!!!!!!!!!!!
Answer:
i think its a
Step-by-step explanation:
why bc i need sum points and the other dude said so
45<0.2k-0.7k
_
I need this answer plz asap
Answer:
k < -90
Step-by-step explanation:
Determine if each set of ordered pairs represents a function.
Answer:
function i think
Step-by-step explanation:
Evaluate p(6) given p(x)
= 2x^4- 3x^3+ 5x^2+ 10x-26 using Remainder Theorem.
six times the quotient of four and a number
PLEASE HELP ME!!!!!!!!
Answer: 6(4/x)
Step-by-step explanation:
Quotient means division so it is 4 divided by a number. This number is unknown so it’s a variable making it 4/x
You also need to multiply this by 6 so 6(4/x)
Is anybody willing to help me?
Answer:
Proportional
Step-by-step explanation:
It is proportional because the relationship between the quantities are constant. If we look at the first two points, 10-5 / 2-1. = 5 If we look at other points, they will all equal 5. This means it is constant and therefore proportional.
answer ASAP:
Explain how to use a horizontal number line
to order four fractions from least to greatest.
Answer:
To order fractions from least to greatest, start by finding the lowest common denominator for all of the fractions. Next, convert each of the fractions by dividing the lowest common denominator by the denominator and then multiplying the top and bottom of the fraction by your answer.
Step-by-step explanation:
Hope this helps ❤️
Answer:
To order fractions from least to greatest, start by finding the lowest common denominator for all of the fractions. Next, convert each of the fractions by dividing the lowest common denominator by the denominator and then multiplying the top and bottom of the fraction by your answer.
Step-by-step explanation:
I know its the same answer but this answer is right. If you have any douts about what he said, look at this. I can assure you that his answer is right and that you will get the right answer from this.
Find the constant of proportionality of the table and express it in an equation
Answer:
The constant of proportionality is 2.5. This can be expressed as (cups of sugar) * 2.5 = cups of flour
Step-by-step explanation:
The constant of proportionality is y/x. Since flour comes second, we'll plug flour in for y here.
5/2 = 2.5
15/6 = 2.5
20/8 = 2.5
The constant of proportionality is 2.5. This can be expressed as (cups of sugar) * 2.5 = cups of flour
Question Help;
Sheldon can read 8 pages in 15 minutes. Amy can read 16 pages in 1 hour. Explain how you could use a table or graph to find how much longer it would take Amy to read a 320-page book than Sheldon.
Answer:
First you must convert time to the same units.
8pages/15min= 32pages/1 hr
now you can clearly see the ratio
Amy: 16/hr
Sheldon: 32/hr
We can see that Sheldon reads twice as fast as Amy.
This should be a good starting point, sorry I don't have much time to finish this question. Hope this helps good luck!
ALGEBRA 1 WORK**
Look at attachment
If you ever been in a situation where your doing homework on your lap at last minute, please help me by answering these questions.
13) a) root 6+7
Thats what i know
I need help pls,
Grayson bought snacks for his team's practice. He bought a bag of apples for $2.62 and a 15-pack of juice bottles. The total cost before tax was $8.62. How much was each bottle of juice?
The required cost of each bottle is $0.4.
Grayson bought snacks for his team's practice. He bought a bag of apples for $2.62 and a 15-pack of juice bottles. The total cost before tax was $8.62, and how much each bottle of juice is to be determined.
What is arithmetic?In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication, and division,
Here,
let the cost of the bottle be x,
According to the question,
2.62 + x*15 = 8.62
x = 8.62 - 2.62 / 15
x = 6 / 15
x = 0.4
Thus, the required cost of each bottle is $0.4.
Learn more about arithmetic here:
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