Answer:
21 books were added
Hope I helped,
PumpkinSpice1
☼♥☼♥☼♥☼♥☼
Find A and B if the graph of Ax + By = 12 passes through (2, 1) and is parallel to the graph of 2x − 7y = 3.
HELLPPPPPP
Answer:
A=-2 and B=7
Equation is -2x+7y=3
Step-by-step explanation:
It took Kim 2 hours 34 minutes to type an
11 page research paper for Biology. What was
Kim's average typing speed?
How
Answer:
4.7 seconds per word
Step-by-step explanation:
11/2.34=4.7
(Im only guessing)
The average speed of Kim is 4.2857 pages per hour.
What are the ratio and proportion?The ratio is the division of the two numbers.
For example, a/b, where a will be the numerator and b will be the denominator.
Proportion is the relation of a variable with another. It could be direct or inverse.
Given that,
It took Kim 2 hours 34 minutes to type an 11 page
1 hour = 60 minutes
1 minute = 1/60 hour
34 minutes = 34/60 hour = 0.567 hour
Total hour = 2.567
Now,
Average speed = Number of pages / Number of hour
Average speed = 11/2.567
Average speed = 4.2857 pages per hour.
Hence "The average speed of Kim is 4.2857 pages per hour".
For more information about ratio and proportion,
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Find the distance from A(15,21) to the line 5x +2y=4. Round your answer to the nearest tenth
Answer:The distance from a point to a line is
distance(ax+by+c=0,(x0,y0)) = abs(ax0+by0+c)/sqrt(a^2+b^2)
So first convert the formula for the line to standard form
5x+2y=4
5x+2y-4=0
a=5, b=2, c=-4, x0=15, y0=-21
Step-by-step explanation:
Write 15 2/3 as an improper fraction
A _______________ is a classification tool that reveals the various possibilities in the comparison of variables for a chi-square.
Answer:
A contingency table
Step-by-step explanation:
Hypothesis tests carried out on contingency tables are based on the chi-square, a statistic.
The contingency table is a Frequency tables of two variables presented at the same time. These tables are constructed when we represent all the levels of a variable as rows in a table and represent the other variables as columns, after which we find the joint or cell frequency for every of the cell.
Sam rented a truck for one day. There was a base fee of $16.95, and there was an additional charge of 73 cents for each mile driven. Sam
had to pay $172.44 when he returned the truck. For how many miles did he drive the truck?
Answer: 134 miles
Step-by-step explanation:
f(m) = 16.95 + 0.92m
140.23 = 16.95 + 0.92m
0.92m = 140.23 - 16.95
0.92m = 123.28
m = 123.28/0.92
m = 134 miles
6-3-4x+1=
No solutions
Answer:
Yes, it's correct. Is that what you were asking for, or is there a part of the question that is missing?
Step-by-step explanation:
Answer:
x = -1 hope this is what you need :)
Step-by-step explanation:
I need help please!!!
Answer:
10. 2
Step-by-step explanation:
Answer: For 9, the answer would be a total of 96 trophies. Just add all the trophies together. For 10, the average may be 16. I just divided the total number of trophies by 6, the total number of data inputs. Sorry if i am incorrect with any of these answers, good luck.
What is the sum of 2.61 and 58.107?
Answer:
60.717 , because 2.61 + 58.107 = 60.717
Step-by-step explanation:
VERY HARD MATH QUESTION PLEASE HELP PLEASE SOMEONE ASAP HELP ME PLEASE DUDE PLEASEE (I linked the question as an attachment)
Answer:c and then d
Step-by-step explanation
Answer: Question 1: A) 1 and 6
Question 2: C)110 Degrees
Corresponding angles are angles that have the same degree.
Please mark brainliest if this helped :)
Which expression is equivalent to 1/4 n − 16? (4 points)
Question 2 options:
1)
1/4 (n − 4)
2)
1/4 (n − 64)
3)
4(n − 4)
4)
4(n − 64)
Answer:
2) B) 1/4(n-64)
Step-by-step explanation:
How far, in meters, will a car travel in 20 seconds at an average speed of 20 m/s?
Answer:
400 seconds
Step-by-step explanation:
To find the distance, you have to multiply. Since each second=20 meters, you have to multiply 20 x 20 because there are 20 seconds.
PLEASE HELP!!!!
Find the value for y so that PQ is perpendicular to RS
P(6.–2). Q(-2,8). R(-1.3), S(-9.y)
-1
0
1
2.
Answer:
A. -1
Step-by-sep explanation:
If PQ is perpendicular to RS, therefore, the slope of RS would be the negative reciprocal of PQ.
Slope of PQ:
P(6,-2), Q(-2, 8)
[tex] slope (m) = \frac{y_2 - y_1}{x_2 - x_1} = \frac{8 -(-2)}{-2 - 6} = \frac{10}{-8} = -\frac{5}{4} [/tex]
Slope of RS:
Slope of RS is the reciprocal of the slope of PQ, since they are perpendicular.
⅘ is the reciprocal of -⁵/4. Therefore, the slope of RS = ⅘.
Use the slope formula to find the value of y in R(-4, 3), S(-9, y).
[tex] slope (m) = \frac{y_2 - y_1}{x_2 - x_1} [/tex]
Plug in the value
[tex] \frac{4}{5} = \frac{y - 3}{-9 -(-4)} [/tex]
[tex] \frac{4}{5} = \frac{y - 3}{-5} [/tex]
Cross multiply
[tex] (4)(-5) = (y - 3)(5) [/tex]
[tex] -20 = 5y - 15 [/tex]
Add 15 to both sides
[tex] -20 + 15 = 5y - 15 + 15 [/tex]
[tex] -5 = 5y [/tex]
Divide both sides by 5
[tex] \frac{-5}{5} = \frac{5y}{5} [/tex]
[tex] -1 = y [/tex]
y = -1
Robert has fish, chickens, and dogs. There are 28 eyes total and 16 legs total. Also, there are twice as many fish as chickens. How many dogs are there?
Answer:
There are 2 dogs
Explaination:
If there are 28 eyes in total,
Dogs- 4 eyes
Chickens- 8 eyes
Fishes - 16 eyes
In total they have 28 eyes
if there are 16 legs,
Dogs- 8 legs
Chickens- 8 legs
Fishes- 0 legs
So,
2 Dogs
4 Chickens
8 Fishes
( the problem even said that there are twice as many fish as chickens)
HELLPPPPPPPPPPPPPPP PLEASEEEEEEE
Answer:
Hopefully this makes sense, but x=+1 and y=-4
Step-by-step explanation:
Lets start with Y. how do you go from 7 to 3? you subtract 4. then, how do you go from 3 to -1? Well... lets subtract till we get to -1. That would be -4. Can you do that for the rest? if so, your answer is -4 for y. for x it just adds a number each time.
Madison has set up a lemonade stand outside her house and sells small cups and large cups of lemonade. Each small cup holds 12 ounces of lemonade and each large cup hold 22 ounces of lemonade. Madison used 1240 ounces of lemonade and sold 10 more large cups than small cups. Write a system of equations that could be used to determine the number of small cups sold and the number of large cups sold. Define the variables that you use to write the system. And add the system of equations to your answer.
Answer:
small cups=30
large cups=40
Step-by-step explanation:
let x be the number of small cups and y the number of large cups.
-Given that 10 more cups than small cups of lemonade were sold:
#Before the 10 more were sold, the number of x and y sold were equal>
The number of small cups sold was 30
Which of the following statements could be translated to the equation n-5=-2?
The difference between a number and five is negative to
Fieles a number is equal to two
A number less than five equals negative to
offee is subtected from a number the result is two
Answer:
the difference between a number and five is negative fieles a number is equal to two
Step-by-step explanation:
n-5=-2
n=-2+5
=3
Answer:
A number less than five equals negative two.
Step-by-step explanation:
Which expression is equivalent to -3(4c-2) -2c
A. -8c
B. 8a -34
C. -26a
D. 8a + 7
Answer:
-3(4c-2) -2c = -14c+6
Step-by-step explanation:
We need to find the equivalent expression for -3(4c-2) -2c.
First we open the brackets as follows :
-3(4c-2) -2c
= -12c+6-2c
=-12c-2c+6
=-14c+6
So, the equivalent expression is -14c+6.
8-4 1/2??????????????????????????????????
Answer:
[tex]\frac{7}{2}[/tex]
Step-by-step explanation:
[tex]4\frac{1}{2} = \frac{9}{2}[/tex] [tex]\frac{8}{1} = \frac{16}{2}[/tex] [tex]\frac{16}{2} - \frac{9}{2} = \frac{7}{2}[/tex]I hope this helps!
Ajar containing only nickels and dimes contains a total of 60 coins. The value of all the coins in the jar is $4.45. If n represents the number of nickels and d
represents the number of dimes, which of the following systems of equations can be used to represent this situation.
O A n+d=4.45
0.05n+0. 10d=60
OB. n+d=60
5n+100=4.45
OC. ned=60
0.05n+0.10d=4.45
O D. 0.05n+0.10d=60
0.05n+0.10d=4.45
Answer: A. N+D=4.45
Step-by-step explanation: We don't know how many nickels or dimes in the jar, so to represent the unknown, we put a variable, N for the nickels, and D for dimes.
I hope this helps!!!
QUESTION:
What is the slope of the line through the points (-6, 3) and (-7, -4)?
ANSWERS:
1/3
1/7
7/1
3/1
Answer:
7/1
Step-by-step explanation:
Slope(m) =y2-y1 /x2-x1
= - 4-3/(-7)+6
= - 7/(-1)
= 7/1
Lizzy has a total of x dollars in her checking account. She makes a deposit of b dollars cash and
two checks each worth c dollars. She would like d dollars in cash from this transaction. She has
enough to cover the cash received in her account. Express her new checking account balance after
the transaction as an algebraic expression.
Answer:
x+b+2 * c - d
I believe that's the expression
Step-by-step explanation:
x+b+2c - d is account balance after the transaction as an algebraic expression.
What is Expression?An expression is combination of variables, numbers and operators.
Given,
Lizzy has a total of x dollars in her checking account
She makes a deposit of b dollars cash and two checks each worth c dollars.
She would like d dollars in cash from this transaction. She has enough to cover the cash received in her account.
This can be expressed by algebraic expression as below.
x+b+2c - d
Hence x+b+2c - d is account balance after the transaction as an algebraic expression.
To learn more on Expressions click:
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Nico paid $15.32 for 4.3 pounds of blueberries. Nico estimated the cost per pound to be $5.00. Which statement explains Nico’s error? WILL GIVE BRAINLEST DIDN"T SPELL RIGHT BUT ASAP. ONLY 10 MINS SO PLEASE HURRY.
1. Nico rounded $15.32 to $15.00 and 4.3 pounds to 6 before dividing.
2.Nico rounded $15.32 to $15.00 and 4.3 pounds to 3 before dividing.
3. Nico rounded $15.82 to $16.00 and 4.3 pounds to 4 before dividing.
4. Nico rounded $15.32 to $10.00 and 4.2 pounds to 2 before dividing.
Answer:
Nico rounded 15.32 to 15.00 and 4.3 pounds to 3 before dividing
This has to be it for it to equal 5.00
Step-by-step explanation:
Hopefully I helped answer your question
Brainliest plz
What is the coefficient in this expression?
14y - 7
7
y
14
-
Answer:
The answer is C. 14
Step-by-step explanation:
A line passes through the points (–3, –4) and (6, 2)
What is the x-intercept of this line?
please help ahhh
9514 1404 393
Answer:
(3, 0)
Step-by-step explanation:
The line through these points intersects the x-axis at x=3.
The x-intercept is (3, 0).
_____
The x-intercept can be computed from ...
x-intercept = x1 -y1(x2 -x1)/(y2 -y1)
= -3 -(-4)(6-(-3))/(2-(-4)) = -3 +4(9/6) = -3 +6
x-intercept = 3
__
Here, it is simple enough to plot the points and see where the line crosses the x-axis.
explination with the answer please? First to answer gets brainliest
Answer:
-5/4
Step-by-step explanation:
The slop is rise over run
which means we need to find the rise over run of this equation:
So the question is how many times do you need to go up/down to get to the next plot on the graph? (Reminder up is positive while down is negative)
So, you go down 5 times which means the top of the slope is -5
Now, how many times do we need to run to get the next plot?
You need to run 4 times to the right to get the next point now we have all the things to solve the problem:
Slope=rise/run
Answer: -5/4
Hope this helps!
Help quick please help
Answer:
Step-by-step explanation:
14h + 400 ≥ 2500
14h ≥ 2100
h ≥ 150
150 is minimum number of hours Ahmed must to work to meet his goal.
What is the slope of the line that passes through the points (2, -3) and (2, 13)
Write your answer in simplest form.
Answer:
The answer is undefined
Step-by-step explanation:
The slope of the line that passes through points (2, -3) and (2, 13) is not defined.
What is a linear equation?It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
It is given that:
The line that passes through points (2, -3) and (2, 13)
The slope 'm' of any straight line is given by:
[tex]\rm m =\dfrac{y_2-y_1}{x_2-x_1}[/tex]
Plug the values to find the slope of the line:
m = (13 + 3)/(2-2) = 16/0 = not defined
Thus, the slope of the line that passes through points (2, -3) and (2, 13) is not defined.
Learn more about the linear equation here:
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XYZ was reflected to form LMN. Which statements are true regarding the diagram?
Answer:
XYZ = LMN
Y = M
X = L
XZ = LN
Step-by-step explanation:
Y = 86, M = 86, M = Y
X = 38, L = 38, X = L
Z = 56, N = 56, Z = N
A,B,C,and F I just did this problem on edge
I need help with this question
Answer:
61
Step-by-step explanation:
It's obvious