Write and solve a system of equation for each problem?
A jar contains nickels and dimes. There is a total of 200 coins in the jar and their value is $14.55. How many dimes are in the jar?
Plz show the steps
Answer:
There are total of 80 dimes in the jar cuz...
n + d = 200 = n = 200 - d
0.05n + 0.1d = $14.00
0.05(200 - d) + 0.1d = $14.00
10 - 0.05d + 0.1d = $14.00
10 + 0.05d = $14.00
-10 -10
0.05d = $4.00
0.05d / 0.05 = $4.00 / 0.05
d = 80
Step-by-step explanation:
hope this helps... *credit to merxinda*
have a good day
ah im stuck on this lol pls help
Answer:
y = 0,4x -1 or y = 2/5 x -1
Step-by-step explanation:
you can use the slope formula
m = y2-y1 / x2-x1
m = -1 - (-3) / 0 - (-5) = 2/5
Answer:
y = 2/5x - 1
Step-by-step explanation:
Points on the graph: ( -5, -3) and (0, -1)
Slope:
m=(y2-y1)/(x2-x1)
m=(-1+3)/(0+5)
m = 2/5
Slope-intercept:
y - y1 = m(x - x1)
y + 3 = 2/5(x + 5)
y + 3 = 2/5x + 2
y = 2/5x - 1
The graph contains a system of equations. What two equations are represented in this system? Select all that apply.
Answer:
A D
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
Simplify the expressions by combining like terms
2/3p + 4/3p - 1/3p
Answer:
5/3p
Step-by-step explanation:
hope this helps you
What value of t is a solution to this equation?
-t + 2
------- = 1
3
Answer:
-1
Step-by-step explanation:
you mutiply the 3 on both sides and then you subtract the 2 from both sides.
-t=1
then u divide by negative 1 which will make the right side number negative
Jonathan has a certain number of Carebears. Haneef has three times as many Care Bears as Jonathan. Annie has four less Carebears than Jonathan. Humzah has five more than twice the amount of Carebears as Jonathan. Jing only likes Fuzzy, so he doesn't have any Carebears. They have 43 Carebears in total.
Answer:
6
Step-by-step explanation:
6×3=18
6-4=2
6×2+5=17
6+18+2+17=43
Can someone help me with this? (statistics) (Dot plot) you need to answer I,J,K, and L. Pls help ASAP
Answer:
K is class A and L is 40%.
Step-by-step explanation:
Find the measure of a. (type the measure of the angle ONLY)
Answer:
85
Step-by-step explanation:
Answer:
The answer is 45
Don'te is sitting on the bus on the way home from school and is thinking about the fact that he has three homework assignments to do tonight. The table below shows his estimated probabilities of completing 0, 1, 2, or all 3 of the assignments.
Answer:
Its b
Step-by-step explanation:
GUYS PLEASE HELP ILL GIVE BRAINLIEST
Answer:
So, following the (X,Y) rule, these are where you put the coordinates.
Step-by-step explanation:
(2000, 10)
(2001, 10)
(2002, 20)
(2003, 40)
(2004, 55)
(2005, 70)
Just for places, I added a picture below.
What part of 28 is 17?
Answer:
4
Step-by-step explanation:
Divide 28 by 4 to get 7
At a school, students may choose one entrée, one vegetable, and one dessert for lunch. The choices are listed in the table below.
How many different lunch combinations are available?
a. 12
b. 36
c. 72
d.144
Answer:
72 is the answer hope this helped
Please help I dont know what to do. I have already done the graph but all I need is x,y box and equation
PLS SOMEONE HELP PLS
Answer:
30$
Step-by-step explanation:
Answer:
The cost per calculator is $30
Step-by-step explanation:
4 calculators = $120
Therefore, each calculator is :-
$120 divided by 4
= $30
help quick please please
Answer:
57.5
formula
A= (a+b/2)h
please help will give more then 5 points plus brainliest!
Answer:
your answer would be A.
Step-by-step explanation:
your anwer would be A. beacuse you want to get to 180
and 116 and 64 = 180
adam completed 17 math worksheets last week and 13 math worksheets this week. if each workshet had 15 problems on it, hoow many problems did he do altogether in these two weeks?
Answer:
17×15 +13×15=150
The corrwct answer is 150 Problems for 2 Weeks.
Ps:Can you make me brainliest.Thx
can someone help me please
A small business earns a profit of $6500 in January and $17,500 in May. What is the rate of change in profit for this time period?
4 months have passed: february, march, april, may
$11,000 have been gained: 17500-6500
11,000/4 = 2750 per month
proof:
january: 6500
feb: 9250
mar: 12000
apr:14750
may:17500
The distance, y, in miles, traveled by a car for a certain amount of time, x, in hours, is shown in the graph below:
Which of the following best describes the motion of the car shown?
It travels for 2 hours, then stops for 3 hours, and finally travels again for 2 hours.
It travels for 2 hours, then stops for 3 hours, and finally travels again for 5 hours.
It travels for 2 hours, then stops for 1 hour, and finally travels again for 5 hours.
It travels for 2 hours, then stops for 1 hour, and finally travels again for 2 hours.
This is on FVLS, so any other students from here are welcome to answer: BUT I JUST NEED A CORRECT ANSWER, I HATE MATH
giving brainliest if u answer
Approximately 52 percent of all recent births were boys. In a simple random sample of 100 recent births, 49 were boys and 51 were girls. The most likely explanation for the difference between the observed results and the expected results in this case is
If Selena completes her homework with 100 percent accuracy, she's allowed
to watch an episode of her favorite show. Each episode of her favorite show
is approximately 30 minutes. If Selena completes her homework with 100
percent accuracy 5 days this week, how many hours will Selena watch her
favorite show?
14. How many hours will Selena watch her favorite show?
(Enter your answer as a decimal.)
Answer:
750
Step-by-step explanation:
Answer:
she can watch 2.5 hours of her show
Step-by-step explanation:
Three times a number minus thirty-two
is seven times a number plus twenty-
eight.
*equation&solve*
Answer:
3n−32=7n+28
n=-15
Step-by-step explanation:
Let's solve your equation step-by-step.
3n−32=7n+28
Step 1: Subtract 7n from both sides.
3n−32−7n=7n+28−7n
−4n−32=28
Step 2: Add 32 to both sides.
−4n−32+32=28+32
−4n=60
Step 3: Divide both sides by -4.
−4n/−4=60/−4
n=−15
plz help I dont know this answer will mark brainliest if correct answer only.
The question is write the equation determined by the graph.
Answer:
Y=1x+3
Hopefully it helps :)
Answer:
y-3=1×(x+0)
Step-by-step explanation:
Hopefully this helps:)Good Luck!
The slope of a line is -3, and a point on the line is (4,-1). What is the equation of the line expressed in slope-intercept form?
-3x + 11
Hope my answer I help you
:)
Please mark my answer as the BRAINLIEST. Plssssssssssssssssssss
help for brainliest plz
What is the volume of the figure below?
Answer:
104m^3
Step-by-step explanation:
we can break this into 2 different rectangular prisms. by adding the 2 volumes, we get the total volume. the V= L x W x H
6x6x2= 72
4x4x2= 32
72+32= 104
I'll mark the best or the first as brainliest.
Answer:
Here the error is
[tex]\pi {r}^{2} [/tex]
It should have been ,
[tex]2\pi {r}^{2} [/tex]
Step-by-step explanation:
Corrected formula:
[tex]2\pi {r}^{2} + 2\pi rh[/tex]
[tex] = 2\pi ({5}^{2}) + 2\pi(5)(10.6)[/tex]
[tex] = 50\pi + 106\pi[/tex]
[tex] = 156\pi[/tex]
[tex] = 489.84 {yd}^{2} [/tex]
[tex]approx . \: 489.8 {yd}^{2} (ans)[/tex]
PLZ HELP RN! I WILL GIVE BRAINLIEST TO BEST ANSWER AND NO LINKS!!!!
Let me rephrase that NO.FRIDGING.LINKS! OR FAKE ANSWERS! AND MAKE SURE TO GIVE A FULL ANSWER AND NOT A BAD ANSWER
Also, just in case you still don't understand, if you reply just to get points, I will legit call brainly and tell them I want my points back fyi. Thank you! :D
I had to rewrite my answer cause I got scammed the first time, so please dont scam me
(giving brainiest and all my points!!)
5 images
Evaluate each expression. Show your work. (just write your work on the question)
Answer:
1. 62
2. 13
3. 6
4. 18
5. 3
Step-by-step explanation:
1. Let's use pemdas
16*1/2= 8
32 / 4 * 8 - 2
8*8 - 2
64 - 2
= 62
2. Let's use pemdas
5*2/5 = 2
20 / 2 + 3
10 +3
= 13
3. Let's use pemdas
1/2 * 24 / 3 +2
12 / 3 +2
4 +2
=6
4. Let's use pemdas
2 * (6 / 2 + 8) -4
2 * 11 - 4
22 - 4
= 18
5. Let's use pemdas
(28 / 7 +6 / 3) * 1/2
( 4 + 2) *1/2
6 *1/2
= 3