Craig has 80 cents in nickels (n) and dimes (d). He has four more nickels than dimes.
Write a system of equations that models the situation.
Solve the system of equations using any method.
PLEASE I NEED HELP!!!!
Answers
Answer:
Criag has 4 dimes and 8 nickles
Step-by-step explanation:
1 dime = 10 cents
1 nickle = 5 cents
4 dimes = 40 cents
8 nickles = 40 cents
40 cents + 40 cents = 80 cents
8 - 4 = 4
therefore it is equivelent that criag has 4 dimes and 8 nickels.
Related Questions
At a sale, you purchased a $20 scarf for $15. What
was the percent of change?
Answers
20 - 15 = $5
20 divided by 5 = 4
So it was 1/4 off which equals 25%
The lifetime for a certain type of tre has been shown to be five years the mean) with a standard deviation of 6 months. In a normal distribution, what percentage of these tires will
last more than six years (more than two standard deviations above the mean)?
Answers
Answer:
2.28%
Step-by-step explanation:
mean = 5 years = 60 months
standard deviation = 6 months
X = number of years the tires will last
P = probability of ...
z = z-score
6 years = 72 months
z = (# of months - mean) / standard deviation
z = (72 - 60)/6
z = 12/6
z = 2
P(X > 72) = 1 - P(X < 72)
= 1 - P(z < 2)
(using a Standard Normal Probabilities Table we can see that P(z < 2) = .9772)
So:
= 1 - .9772
= 0.0228 OR 2.28%
Pls help due at 2:00
Answers
Answer:
1. $8.77
2. 498.456
Step-by-step explanation:
An atom's mass is determined by the number of ____________ and ___________ in the atom's nucleus.
a
protons, neutrons
b
electrons , protons
c
protons, electrons
d
electrons , neutrons
Answers
Answer:
a
protons, neutrons
Step-by-step explanation:
An atom's mass is determined by the number of protons and neutrons in the atom's nucleus.
good night all ✨
[tex]{\boxed{1.}} \: \tt 2x + 8 = 24[/tex]
[tex]{\boxed{2.}} \tt \: 6x = 12 - 6[/tex]
must accompany "step by step"! :)
Answers
Answer:
28+8=24
61=12-6
Step-by-step explanation:
Subtract 8 from both sides of the equation.
2x+8=24
2x+8-8=24-8
Simplify
2x=16
Divide both side of the equation by the same term
2x/2 16/2
Simplify
x=8
Subtract the numbers
6x=12-6
6x=6
Divide both side of the equation by the same term
6x/6 6/6
Simplify
x=1
hope it helps took a long time to do lols
Answer:
Subtract 8 from both sides of the equation.
2x+8=24
2x+8-8=24-8
Simplify
2x=16
Divide both side of the equation by the same term
2x/2 16/2
Simplify
x=8
Step-by-step explanation:
Sorry I can't aNswer well
Please help me with this!!
Answers
2 dollars each
Step-by-step :
Since 7 - 3 is 4
And 2 fries were bought then we have to divide 4 by 2 which equals 2. So 2 dollars were each small package of fries.
find the slope from this graph
Answers
Answer:
m (slope) = 664
Step-by-step explanation:
Formula:
m (slope) = y1-y2/x1-x2
m = 16570 - 21226 / 1982 - 1986
= -4,656 / -4
= 664
Solve the following
system of equations:
5x – 2y = 4
x + 2y = 8
Answers
Answer:
x=2
y=3
Explanation
1. Solve x + 2y = 8 for x:
x + 2y = 8
x+2y + − 2y = 8 + −2y(Add -2y to both sides)
x = −2y + 8
2. Substitute −2y + 8 for "x" in 5x − 2y =4
5x − 2y = 4
5 (−2y + 8) − 2y =4
−12y + 40 = 4 (Simplify both sides of the equation)
−12y + 40 + −40 = 4 + −40(Add -40 to both sides)
−12y = −36 (Divide both sides by -12)
y = 3
3. Substitute 3 for "y" in x= −2y + 8
x = −2y + 8
x = (−2) (3) + 8
x = 2 (Simplify both sides of the equation)
Answer:
x = 2 and y = 3
Write 57 divided 50 as a percentage
Answers
Answer:
87.72%
Step-by-step explanation:
What is the fraction (ratio) 50/57 as a percent value?
49/57 = ? ... 51/57 = ?
Detailed calculations below:
Introduction. Fractions
A fraction consists of two numbers and a fraction bar:
50/57
The number above the bar is the numerator: 50
The number below the bar is the denominator: 57
Divide the numerator by the denominator to get fraction's value:
Val = 50 ÷ 57
Introduction. Percent, p%
'Percent (%)' means 'out of one hundred':
p% = p 'out of one hundred',
p% = p/100 = p ÷ 100.
Calculate fraction's value.
Divide the numerator by the denominator to get fraction's value:
50/57 =
50 ÷ 57 ≈
0.87719298245614
Note:
100/100 = 100 ÷ 100 = 100% = 1
Multiply a number by the fraction 100/100,
... and its value doesn't change.
Calculate the percent value:
0.87719298245614 =
0.87719298245614 × 100/100 =
(0.87719298245614 × 100)/100 =
87.719298245614/100 =
87.719298245614% ≈
87.72%;
In other words:
1) Calculate fraction's value.
2) Multiply that number by 100.
3) Add the percent sign % to it.
Answer:
:: written in two ways ::
Not rounded:
50/57 = 87.719298245614%
Rounded to maximum 2 decimals:
50/57 ≈ 87.72%
Signs: % percent, ÷ divide, × multiply, = equal, / fraction bar (division bar), ≈ approximately equal;
Writing numbers: comma ',' as thousands separator; point '.' as a decimal mark;
More operations of this kind:
49/57 = ? ... 51/57 = ?
Round 2,389 to the nearest hundred
Answers
Answer:
2,400
Step-by-step explanation:
2,389 rounded to the nearest hundred is 2,400
Please help and Imma be postin these all night I literally suck at algebra two so just check my profile if your good at math :)
Answers
Answer:
The range of the equation is y ≥ 9 ⇒ C
Step-by-step explanation:
The quadratic equation y = ax² + bx + c, represents by a parabola of vertex (h, k), where h = [tex]\frac{-b}{2a}[/tex] and k is the value of y at x = h
The range of the quadratic if it has a minimum vertex is y ≥ k, and y ≤ k if it has a maximum vertexThe parabola has a minimum vertex if the value of a is positive and a maximum vertex if the value of a is negative∵ The equation is y = x² + 9
→ Compare it with the form above to find a and b
∴ a = 1 and b = 0
∵ a is a positive number
∴ The parabola has a minimum vertex
→ By using the 1st rule above
∴ The range is y ≥ k
→ Use the rule of h above to find it
∵ h = [tex]\frac{-(0)}{2(1)}[/tex] = [tex]\frac{0}{2}[/tex]
∴ h = 0
→ To find k substitute x by the value of h and y by k
∵ k = (0)² + 9
∴ k = 0 + 9
∴ k = 9
∴ The range of the equation is y ≥ 9
You are throwing a party at an arcade. You recieve 5 tokens for every dollar spent. Create an equation that describes this situation. T is the total number of tokens and D is the number of dollars.
Answers
Answer: 5D = T
Step-by-step explanation:
A dollar spent will give 5 tokens.
The amount of dollars spent therefore will increase the number of tokens you by fivefold.
Formula is therefore:
5D = T
Testing it.
Assume you spent 5 dollars, how many tokens would you have:
5D = T
5 * 5 = 25 tokens
Adrián compró una bicicleta cuyo precio original es de 400.00 pesos pero al pagar en la caja le hicieron 20% de descuento cuánto pagó al niño para la bicicleta
Answers
Answer:
320 pesos
Step-by-step explanation:
Un 20% de descuento en formato decimal es 0.20. La totalidad de la bicicleta es representada como 100% o 1 y nosotros queremos saber el precio despues del descuento que seria
100% - 20% = 80% o 0.80
Ahora simplemente multiplicamos este decimal por el valor original de la bicicleta para saber el precio descontado...
400 * 0.80 = 320 pesos
Rewrite the following expression in simplest radical form: (4x^2/3)^3 - (81x^5)^1/4
Answers
Answer:
64x^2/3x^5/4
Step-by-step explanation:
(4x^2/3)^3 / (81x^5)^1/4
4^3*x^2/3*3 / 3^4*1/4*x^5/4
64*x^2 / 3*x^5/4
martin tosses 4 pennies, what is the probability that at least 3 coins land on heads?
Answers
If 75% of a number is 165 and 10% of the same number is 22, find 85% of that number
Answers
Answer:
187
Step-by-step explanation:
0.75x=165 x=220
220*0.85
At the local pet store, zebra fish cost $2.10 each and neon tetras cost $1.85 each. If
Mary bought 16 fish for a total cost of $31.60, not including tax, how many of each
type of fish did she buy?
a) 8 zebra fish; 8 neon tetras
b)8 zebra fish; 9 neon tetras
c) 14 zebra fish; 2 neon tetras
d) 7 zebra fish: 9 neon tetras
Answers
Let me know if you need an explanation
The school has 330 students in 11 classrooms. What is the unit rate of
students per classroom? Explain how you got your answer.
Answers
330 Students ÷ 11 Classrooms
We want a unit rate where
1 is in the denominator,
so we divide top and bottom by 11
330 Students ÷ 11
11 Classrooms ÷ 11
=
30 Students
1 Classroom
=
30 Students
Classroom
= 30 Students per Classroom
Alexander has pp pennies and nn nickels. He has a maximum of $0 worth of coins altogether. Write this situation as an inequality.
Answers
Answer:
p+5n≤0
Step-by-step explanation:
i just took it
Find the value of x. Round your answer to the nearest tenth
Answers
hi I am interested for your answers but I can't find 5x-3 in my profile as my number and I am currently in my second week and simplify days of my contract for my current role
the following 3x are some numbers for you and your answers will not care for you and your answers to all of the boxes in my number of days
Sam is making a project out of wood. He needs a board that is 2 3/4 feet long. He has a board that is 3 1/8 feet long How much does Sam need to cut from the board for the project?
Answers
what is the degree of the expression below? x^2-3x+7
Answers
Answer:
2
Step-by-step explanation:
can someone help me solve x
Answers
Answer:6
Step-by-step explanation:solve the equation, you know that it equals 90 because the angle is 90
so 16x-6=90
+6 both sides
16x=96
divided by 16 both sides to isolate x
x=6
what is the image of the point ( -4, 8) after a rotation of 90° counterclockwise about the origin
Answers
Answer:(-8,-4)
Step-by-step explanation:
Answer for 30points!!!!
Answers
Answer:
The answer is 4x
Step-by-step explanation:
Simpify
1. Combine like terms
2. Solution
THIS IS A 5 POINTS QUESTIONS!
Answer:
4x
Step-by-step explanation:
cus if you put 4x it wouldn't solve
5x-x+7=4x+2
5x-x-4x+7=2
7=2 that is wrong so the answer is 4x
Giving brainlest please help xoxo stay safe and healthy
Answers
40*0.20=8
40+8=48
You’re welcome and I hope you stay safe.
Marcus has 4 times the sum of 6 and the number of marbles David has let d represent the number of marbles David has write an algebraic expression to represent how many marbles Marcus has.
Answers
Answer:
4(6+d)
Step-by-step explanation:
marking people brainlist 7s-s=
Answers
Answer:
6s
Step-by-step explanation:
Which Unit lengths represent the sides of a right triangle
A. 3,4 and 5
B. 6, 8 and 15
C. 20, 21 and 29
D. 9, 12 and 15
Answers
Answer:
A 3, 4 and 5
Step-by-step explanation:
I need help!!
Simplify this complex fraction