Answer:
[tex]\begin{cases}n+d = 27\\0.05n+0.10d = 2.75\\\end{cases}[/tex]
====================================================
Explanation:
n = number of nickels
d = number of dimes
The n and d are placeholders for positive whole numbers.
Since we have 27 coins, we know that n+d = 27. The two subcounts must add to the grand total of 27. That explains how the first equation is set up.
The second equation is set up by looking at the dollar amount each group of coin brings in.
0.05n = amount of money in dollars the nickels bring in
0.10d = amount of money in dollars the dimes bring in
0.05n+0.10d = total amount of money in dollars = 2.75
The single curly brace to the left of the equations tells the reader we're dealing with a system of equations. The equations are tied together.
Carolina is mowing lawns for a summer job. For every mowing job, she charges an initial fee plus $6 for each hour of work. Her total fee for a 4 hour job, for instance, is $32.
Let y represent Carolina's fee (in dollars) for a single job that took x hours for her to complete.
Complete the equation for the relationship between the fee and number of hours.
y=______
Answer:
y=6x+8
Step-by-step explanation
correct on khan ;)
1/5×8 simplified =?!?!
Answer:
the answer is 1.6
Step-by-step explanation:
Please help! Not sure what the question is asking exactly and need this last problem done asap!
Answer:
look at the photo..............
9514 1404 393
Answer:
log₅(21) = log₅(3) +log₅(7)
Step-by-step explanation:
The relevant relation is ...
log(ab) = log(a) +log(b)
where the logs have any consistent base.
__
Here, we have ,,,
ab = 21 = 3·7.
Then ...
log(21) = log(3) +log(7)
When the logs are to base 5, that becomes ...
log₅(21) = log₅(3) +log₅(7)
The prize of a television was reduced from $250 to $200.
By, what percentage was the price of the telivision
reduced?
F 20%
G 25%
H 80%
J 50%
Answer: F 20%
Step-by-step explanation:
50 is 20% of 250
Please help! Will brainliest!
Answer:
a= 6-b ,,, a+b=6
a+b= -2a-3,,, 3a+b=-3
2a=-9,,, a= -9/ 2
b= 21/2
Help with questions 21-23 using pemdas
If u can, please help with some ones below those (using pemdas) :]
Tyyy
Answer:
21. 123 22. 6.86 or 6/ 6/7 23. 90
Step-by-step explanation:
21. (6+4)² + (22+10÷2)
(10)² + (22 + 5)
100 + 27
127
22. (11+42-5) ÷ (11-4)
48 ÷ 7
6.85 or 6 6/7
23. (17-3) × (14 - 6) -22
14 × 8 - 22
112 - 22
90
Karen paints her house in 10 1/2 days working 7 1/2 hours per day. How long would it take Karen to do the job if she worked 9 hours a day?
Answer:
8. 75 days
Step-by-step explanation:
You work for 10.5 days 7.5 hrs each day painting the house = it takes 78.75 hours to paint the house.
If you work 9 hours a day: 78.75/9 = 8.75 days
If she does the same job for 9 hours. Then the number of days will be 8.75 days.
What are ratio and proportion?A ratio is a group of sequentially ordered numbers a and b expressed as a/b, where b is never equal to zero. When two objects are equal, a statement is said to be proportional.
Karen paints her house in ten and a half days, working seven and a half hours every day.
If she does the same job for 9 hours. Then the number of days is given as,
D x 9 = 10.5 x 7.5
9D = 78.75
D = 78.75 / 9
D = 8.75 days
If she does the same job for 9 hours. Then the number of days will be 8.75 days.
More about the ratio and the proportion link is given below.
https://brainly.com/question/14335762
#SPJ2
mr candy man is making bags of candy to reward students in his class. a blue bag contains 7 pieces of candy while a red bag contains 13 pieces of candy. if he has 106 pieces of candy and wants to use them all how many red bags can he make?
(I need help with this asap)
3 (1 2t) = 3t + 5 !!
Answer:
2/3
Step-by-step explanation:
3+6t=3t+5
like terms together
6t-3t=5-3
3t=2
t=2/3
Please please hurry!!!!! Help do as many as u can Sorry its blurry
Answer:
3. a,c
4. a,c
5. c
6. a
7. y=-9x
8. y=x+9
9. y=x-7,y=x+3
13. y=x+5
14. y=8x-2
15. y=5
Step-by-step explanation:
Sry for late response
Step-by-step explanation:
3. all three equations are in the form of
[tex]y = mx + b[/tex]
where m is the slope and b is the y intercept.
A and X both have a y intercept of 1 so A and C is the answer.
4. A megative slope is included by a negative sign so A and C is the answer.
5. The linear parent function is the identity function which is
[tex]y = x[/tex]
6. Since our points share the same y coordinate, our slope will be a horinzontal line which indicates a slope of zero.
7. The sleepest line has the greatest absolute value slope which is y=-9x.
8. The fattest has the smallest absolute value slope which is y=x+9.
9.The first and second one are parallel because they have the same slope
13.The second one does.
14. 8x+10 is greater slope than 5x.
15. y=5 because it has no y intercept
Maths Question - Topic Pythagoras
Please answer the question. Awarding 20 points
So for this you use a formula which is
a2 + b2 = c2
You name the highest one c, the rest are you choice
so now it will be - x2 + 7 2 = 14 2
you now square them,
now they will be x2 + 49 = 196
now it will be easy to solve it.
pls help
its hw pls help
ill try to make brainiest
Answer:
1. 8. 2. 8. 3. 7/5. 4. 2/3.
Step-by-step explanation:
As you can see you just need to cross multiplication and use distirbitive property
Please give brainiest
Calvina Miller makes a car payment of $214.50 every month. Her car
loan is for 5 years. How much will she pay in 5 years?
ABC has side lengths 5 inches, 7 inches, and 10 inches.
JKL has side lengths 12
inches, 35 inches, and 37 inches. PQR has side lengths 13 inches, 10 inches, and 16
inches.
Answer: Obtuse, Right, Acute
Step-by-step explanation:
ABC: 5²+ 7² = 10²
25 + 49 = 100
c is greater so it is obtuse.
JKL: 12² + 35² = 37²
144 + 1225 = 1369
1369 = 1369
legs are equal to c so it is right.
PQR: 13² + 10² = 16²
169 + 100 + 256
269 = 256
c is less so it is acute.
I need some help with this
AB= 10.2 cm and Bc= 3.7 cm find the length of AC
Answer:
3.2333
Step-by-step explanation:
help please if you can. Thank you
Answer:
6/11
Step-by-step explanation:
I don't know that's what my mom said
-c: infinitely many solutions, Help solve plss
what is the present value of $6,000 to be received at the end of 6 years if the discount is 12%
Answer:
$3,039.79
Step-by-step explanation:
Simplify.
- 2x - } – 5x + i + x
-
х
-
17/3
-
3
+
10
х
Enter your answer in the box.
Do not use decimals in your answer.
Answer:
I'dont think it's 77 or not right
Given info:-
Evaluate:
[(1⅕ - 2/5).(-3/5)³]÷(-9)
⇛[6/5 - 2/5).(3³/5³)]÷(-9)
Take the LCM 5 & 5 is 5.
⇛[(6-2 /5). (3*3*3/5*5*5)]÷(-9)
⇛[(4/5).(27/125)]÷(-9)
⇛[4/5 × 27/125)]÷(-9)
⇛[(4*27)/(5*125)]÷(-9)
⇛[20/625] ÷ (-9)
⇛[20/625] ÷ 1/9
⇛20/625 × 9/1
⇛(20*9)/(625*1)
⇛180/625
Now, reduce the fraction by extracting and cancaling out with 5.
⇛36/125 or 0.228 Ans.
Hope this helps!
What’s three-and-two-fifths times three-and-one-fourth?
Answer:
Answer is 221/20
Step-by-step explanation:
if we solve 3 2/5 × 3 1/4
then we will get 221/20.
D
C
Out of every five students at a school,
there are two who take art as an elective.
h
С
If sixty students are taking art, how many
students attend the school?
Answer:
210
Step-by-step explanation:
210 students attend the school. if 60 students are taking art, and there are 2 art students in every 7 students, that means there are 30 groups of 7 because 30×2=60 so since the other 5 do not take art, you would multiply 30×5 and get 150. Then you would add 60 and you would get 210
Assume that the readings at freezing on a bundle of thermometers are normally distributed with a mean of
0°C and a standard deviation of 1.00°C. A single thermometer is randomly selected and tested. Find the
probability of obtaining a reading greater than 2.011'C.
P(Z > 2.011)
ery
Answer:
0 degree
Step-by-step explanation:
you know all the time the answer of the probality is 0 rarely any other dijit
what is 4/5 divided by 2/3 simplest form
Answer:
6/5
Step-by-step explanation:
4/5 divided by 2/3 in simplest form is 6/5.
What is Algebra?Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.
The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.
Given;
4/5 divided by 2/3
Now,
=(4/5)/(2/3)
=12/10
=6/5
Therefore, by algebra answer in simplest form will be 6/5.
More about the Algebra link is given below.
brainly.com/question/953809
#SPJ5
review the simple linear graph what is the slope of the simple linear graph of Line c write the slope either as a integer or fraction NO decimals enter your answer in the box
Answer:
The answer is 1/4. Hope it helps.
Step-by-step explanation:
PLEASE IF YOUR A MATH EXPERT ANSWER THIS I'M LOSING MY SANITY
What is the value of 7m−3n when m = 3 and n = 2?
A: 5
B: 15
C: 24
D: 36
Answer:
B: 15
Step-by-step explanation:
To answer this question, simply plug in the values according to each variable. So, because m = 3, plug the m next to 7 with 3, so then that means that 7 is now multiplied by 3. Then, plug in 2 into n because n = 2, so 3 is being multiplied to n. This is what we get:
7(3) - 3(2)
Now, multiply!
21 - 6
Finally, solve:
21 - 6 = 15
Therefore, the answer is:
B: 15
Hope this helps :)
What percent of the students in
applied majors are majoring in
electronics, industrial design, or civil engineering?
You give an 18% tip for a meal. What expression represents the total cost with tip?
Answer:
multiply the cost by 0.18 to get the tip amount or multiply the cost by 1.18 to get the total including tip.
Step-by-step explanation:
Keith plays basketball at a gym. He can get a $20 membership card and pay $2 for every visit, or he can go any time and just pay $5 for each visit. Which two equations represent the two options for his
number of visits with his total ccost?
The two equations that can be used to represent his number of visits with his total cost will be 20 + 2x and 5x.
Let the number of visits be represented by x.
Since Keith can get a $20 membership card and pay $2 for every visit, or he can go any time and just pay $5 for each visit, then the equation to represent the information will be:
20 + (2 × x) = (5 × x)
20 + 2x = 5x
Therefore, the equations will be 20 + 2x and 5x.
Read related link on:
https://brainly.com/question/25306375
This question has been answered, thank you so much for trying to help ^^
Ok, but don't spend so much of points it will create a shortages of point for u only, if point will get less then you will not able to ask question anymore.
Got it ^_^
I will ask this question based on the above pic. So I'm picking up a question for this.
Anyways thanks for giving away 26 points to me :))
I'm also asking a question with that amount of points. OK