Answer:
-11
Step-by-step explanation:
-11 x 3 = -33
-33 + 7 = -26
Ella's grandmother sewed her a change purse. When she gifted it to her, Ella counted 23 coins already in it. Ella noticed there were only dimes and quarters worth $4.70. How many dimes were in the change purse?
Answer:
16 quarters and 7 dimes
Step-by-step explanation:
16*25 = 400 (or 4 dollars)
7*10 = 70 (or 70 cents)
400+70 = 470 (or $4.70)
– (8q+7)= 3 (16 — q) ?
Answer:
-11
Step-by-step explanation:
Given that a2 + b2 = 33 and ab=7, find the value of (a-b)2
Step-by-step explanation:
(a - b)²
= a² - 2ab + b²
= (a² + b²) - 2(ab)
= (33) - 2(7)
= 19.
Find the slope and y/intercept of y = 5x – 2
Answer: The slope is 5 and teh y-intercept is -2.
Step-by-step explanation:
The slope is the number next acting as the coefficient of the x variable, and y intercept is always the constant value which never changes and that number is -2.
Find 156% of the number 145?
Answer:
226.2
Im pretty sure.
suddenly the number of math problems mathletes had to solve increased by 60%! to keep on track the mathletes try to go faster but only increase their speed by 25% By what percent must the number of mathletes on the team increase so they can solve all the problems on time?
Answer:
28%
Step-by-step explanation:
Lets say the fraction of speed and problem solved is 100/100
the number of problems solved increases by 60%
so now it is 160/100, also the speed increases by 25%
so now we do 160/125=1.28
finaly we do 1.28-1 = 28%
Therefore the answer is 28%.
hope this helps
Answer:
28%
Step-by-step explanation:
The number of mathletes on the team must increase by 28%.
Description of speed
The speed of the mathletes is total number of questions divided the total number of people on the team.
Speed = total number of questions / total number of people on the team
Determination of the percentage increase in the number of mathletes
Increase in the number of people on the team = total number of questions / speed
1.60 / 1.25 - 1 = 28%
Andy is buying a car.
He negotiated a 7% decrease on a £6500 car. He will pay the full balance 12 equal monthly payments.
calculate the amount paid each month
7/100* 6500=455
6500-455=6045
6045/12=503.75
Andy pays 503.75 a month
What is x + 2/3 = -4
Answer:
x = -14/3
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Step-by-step explanation:
Step 1: Define
x + 2/3 = -4
Step 2: Solve for x
Subtract 2/3 on both sides: x = -14/3Determine the x- and y- intercepts for the graph defined by the given equation. x = -9 Please select the best answer from the choices provided
Please help find the solution to the system.
Answer:
D. x = 1, y = -2
General Formulas and Concepts:
Algebra I
Solving systems of equations by graphingStep-by-step explanation:
The solution to the systems will be where the 2 lines intersect. According to the graph, the 2 lines intersect at (1, -2). Therefore, our answer is D. x = 1, y = -2.
Jack is considering a list of features and fees for Current Bank:
A 2-column table with 3 rows. Column 1 is labeled Feature with entries checking account, savings account, online services. Column 2 is labeled Description with entries free with direct deposit of paycheck, first account free each additional account 4 dollars per month, free with all checking and savings accounts.A 2-column table with 3 rows. Column 1 is labeled Fees with entries non-sufficient funds, second copy of statement, network A T M usage. Column 2 is labeled Amount with entries 32 dollars, 3 dollars, first 2 per month free, 3 dollars for each additional transaction.
Jack plans on using network ATMs about 4 times per month. What would be Jack’s total estimated annual fees for a checking account with direct paycheck deposit, one overdraft per year, and no 2nd copies of statements?
a.
$44
b.
$104
c.
$144
d.
$176
Answer:
B.$104
Step-by-step explanation:
EDGE 2021
Answer:
b
Step-by-step explanation:
Identify the variables: 8c * 7c - 10p + 12
9514 1404 393
Answer:
c, p
Step-by-step explanation:
When you remove the numbers and the math operations (multiplication, addition, subtraction), what is left are the variables. Here, the variables are c and p.
PLZZZZ ANSWER!!!!!!!!!
Answer:
9 i think if not then sorry
Step-by-step explanation:
How many seconds until the ball touches the ground
Answer: 6.06 seconds
Step-by-step explanation:
This will not factor. The ball will hit the ground 6.06 seconds after thrown.
A particular fruit's weights are normally distributed, with a mean of 405 grams and a standard deviation of 19 grams. If a fruit is picked at random then 17% of the time, its weight will be greater than how many grams?
Answer:
413.126
Step-by-step explanation:
Given a normal distribution :
Mean (m) = 405
Standard deviation (s) = 19
Weight of fruit will be greater than how many grams (x) if picked 17% of the time:
P(Z > x) = 0.17 ;
The Zscore for P(Z > x) = 0.17 equals 0.954 (Z probability calculator)
Zscore = (x - m) / s
0.954 = (x - 405) / 19
0.954 * 19 = x - 405
18.126 = x - 405
x = 18.126 + 405
x = 423.126
Weight will be greater than 423.126
You are making a blueprint of your bedroom and you plan to use a scale factor of 1/5 . The actual width of your room is 12 feet and the actual length of your room is 8 feet. Determine the width and length of your room on the blueprint.
9514 1404 393
Answer:
2.4 ft by 1.6 ft
Step-by-step explanation:
The scaled size is 1/5 the actual size, so is ...
12 ft/5 = 2.4 ft
by
8 ft/5 = 1.6 ft
_____
To convert to inches, multiply by 12 in/ft.
2.4 ft = (2.4 f)(12 in/ft) = 28.8 in
1.6 ft = (1.6 ft)(12 in/ft) = 19.2 in
In inches, the width and length on the blueprint are 28.8 in and 19.2 in.
Audrey invested \$620$620 in an account in the year 2000, and the value has been growing exponentially at a constant rate. The value of the account reached \$700$700 in the year 2004. Determine the value of the account, to the nearest dollar, in the year 2011.
Answer:
$866
Step-by-step explanation:
The exponential expression to use is:
P(t) = P0e^kt
P0 is the initial population
P(t) is the population after time t;
k is the constant
If Audrey invested $620 in an account in the year 2000, then, P0 = 620
If the value of the account reached $700 in the year 2004, this means after 4 years P(t) is $700
Substitute t = 4 and P(t) = 700 into the expression above;
700 = 620e^4k
700/620 = e^4k
1.129 = e^4k
ln 1.129 = ln(e^4k)
0.1214 = 4k
k = 0.1214/4
k = 0.03034
To determine the value of the account, to the nearest dollar, in the year 2011, that is after 11 years
P(11) = 620e^11k
P(11) = 620e^11(0.03034)
P(11)= 620e^0.3337
P(11) = 620(1.3961)
P(11) = 865.597
Hence the value of the account in 2011 is $866 to the nearest dollars
Answer:
$866
Step-by-step explanation:
What abidemiokin said was right! Have a great day :)
Bert and Ernie are planning to go on a tiger hunt. They will need to climb a mountain during their trip. They currently can only read a map and need help calculating the slope. The slope of the mountain is represented by the two points (–2, –1) and (3, 5). What is the slope?
Answer: 6/5
Step-by-step explanation:
Given the points:
(–2, –1) and (3, 5)
x1 = - 2 ; y1 = - 1 ; x2 = 3 ; y2 = 5
Slope is the change in y divided change in x
Slope = change in y / change in x
Slope = (y2 - y1) / (x2 - x1)
Slope = (5 - (-1)) / (3 - (-2))
Slope = (5 + 1) / 3 +2
Slope = 6 / 5
You reflect triangle PQR, with vertices P(-2, -4), Q(-3, -1), and R(-4, -4), across the y-axis to get triangle P′Q′R′. What are the coordinates of triangle P′Q′R′? A. P′(-2, 4), Q′(-3, 1), R′(-4, 4) B. P′(2, -4), Q′(3, -1), R′(4, 4) C. P′(-2, 4), Q′(-3, 1), R′(4, -4) D. P′(2, -4), Q′(3, -1), R′(4, -4)
Answer:
D
Step-by-step explanation:
Answer:
D.
P′(2, -4), Q′(3, -1), R′(4, -4)
Step-by-step explanation:
Look at the picture and let me know the answer please
the question is on there
Answer:
acute angle
Step-by-step explanation:
In the figure below, ZAOD is a right angle and mAB
mCD. What is m BC?
Answer:
BC=74.7
Step-by-step explanation:
AB=15.3
CD=15.3
15.3+15.3=30.6
90-30.6=59.4
BC=74.7
can you please help me find out what m
Answer: B.
Step-by-step explanation: A triangle is 180 degrees. m< a + b + c = 180, so 75+20+x=180, so x = 85. B.
-What is the total area?
-Could there be more than one answer?
Answer:
58inches
no
Step-by-step explanation:
you just have to add them all up
Aaron's plane flew 4.5 m. Noah's plane only flew half the distance that Aaron's plane flew. How many centimeters further did Aaron's plane fly?
Answer:
225 centimeters.
Step-by-step explanation:
To solve this, we need to find half of 4.5. We can do this by dividing 4.5 by 2. When we do this, we get 2.25. This means Noah's plane flew 2.25 meters, but we aren't done yet. Now, we need to find how much farther Aaron's plane flew. We can do this by subtracting 2.25 from 4.5. From this, we get 2.25. That last step wasn't really necessary. Now, we need to convert 2.25 meters to centimeters, we can do this by multiplying 2.25 by 100. When we do this, we get 225. This means Aaron's plane flew 225 centimeters farther than Noah's plane.
Wayne and Winston are scuba diving and are ascending to the surface. The function y = 30x − 105 represents Wayne’s elevation in feet in terms of the time in minutes he ascends. The table represents Winston’s elevation in feet in terms of the time in minutes he ascends. Assume that Wayne and Winston both ascend at a constant rate.
Part C
(Click for a video for parts C and D)
How will doubling the number of students change the cost per student? To test your
ideas about that question, find answers to these related questions.
1. Find the change in per-student cost as the number of students increases in the
following ways.
a. from 20 to 40
b. from 40 to 80
A tower that is feet 152 tall casts a shadow 157 feet long. Find the angle of elevation of the sun to the nearest degree.
let the angle be x°
cos x°= B = 152 = 0.968
H 157
Anti cos of 0 .968
x= 75.5°
i need help asapppppp
Complete the expressions Write each answer as a number, a variable, or the product of a number and a variable 7(9r + 2) = 7 . 9r + 7 . ___ = ___ + 14
Answer:
Step-by-step explanation:
7 x 9r + 7 x 2 = 63r + 14
