Answer:
1) $2.45
2) $(0.25y + 0.1z)
Step-by-step explanation:
dimes are 0.10 in value, quarters are 0.25
1) How much money in dollars does she have if she has 12 dimes and 5 quarters? 12(0.1) + 5(0.25) = 1.2 + 1.25 = $2.45
2) How much money in dollars does she have if she has z dimes and y quarters?
z(0.10) + y(0.25)= 0.25y + 0.1z
I rearranged it because we put variables in alphabetical order.
LMK if you have questions.
a) The total value of 12 dimes and 5 quarters is $ 2.45
b) The total value of x dimes and y quarters is 0.10x + 0.25y
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the value of 1 dime = 10 cents
= $ 0.10
Let the value of 1 quarter = 25 cents
= $ 0.25
Now the equation will be
a)
The value of 12 dimes = 12 x value of 1 dime
= 12 x 0.1
= $ 1.2
The value of 5 quarters = 5 x value of 1 quarter
= 5 x 0.25
= $ 1.25
So , the value of 12 dimes and 5 quarters is =
value of 12 dimes + value of 5 quarters
The value of 12 dimes and 5 quarters is = $ 1.2 + $ 1.25
= $ 2.45
b)
The equation will be
The value of x dimes = 0.10x
The value of y quarters = 0.25y
So , the value of x dimes and y quarters is =
value of x dimes + value of y quarters
The value of x dimes and y quarters is = 0.10x + 0.25y
Hence , a) The total value of 12 dimes and 5 quarters is $ 2.45
b) The total value of x dimes and y quarters is 0.10x + 0.25y
To learn more about equations click :
https://brainly.com/question/10413253
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What is the equation that represents the relationship shown in the table?
A rectangular prism has a volume of 240cm. It's height measures 8 cm. What is the area of its base
Answer: Base = 90 [tex]cm^{2}[/tex]
Step-by-step explanation:
Who got Insta grammm because I really need help with my math assignments I’ll pay you $30 cash app or PayPal if it’s right
Answer:
just post it here im sure i can help w/o pay
Step-by-step explanation:
Answer:
I have Insta gram and I will help you but for free
A six-week fitness program was designed to decrease the time it takes retired individuals to walk one mile. At the beginning of the program, 20 randomly selected retired individuals were invited to participate, and their times to walk a mile were recorded. After the six-week program, their times to walk a mile were again recorded. Most participants saw little to no improvement in their times to walk one mile; however, a few participants saw drastic improvements in their times to walk one mile. The program director would like to perform a hypothesis test to determine if the program reduces the mean time for retired individuals to walk a mile. Which of the following statements is true?
a. Because there are 40 observations in total, the sample size is large enough to assume that the sampling distribution of the sample mean differences is approximately normal.
b. Because the walk times before and after the program are paired, a hypothesis test is not appropriate.
c. The sampling distribution of sample means can be assumed to be approximately normal because the distribution of the sample data is not skewed.
d. Because the sample size of 20 is less than 30 and the improvements in walk times in the sample data appear to be skewed, the distribution of sample means should not be assumed to be approximately normal.
e. Because the program recruited only retired individuals, the distribution of sample means should not be assumed to be approximately normal.
Answer:
c. The sampling distribution of the sample means can be assumed to be approximately normal because the distribution of the sample data is not skewed
Step-by-step explanation:
From the given data, we have;
The category of the sample = Retired individuals
The number of participants in the sample = 20
The duration of program = six-weeks
The improvement seen by most participants = Little to no improvement
The improvement seen by few participants = Drastic improvement
Therefore, given that the participants are randomly selected and the majority of the participants make the same observation of improvement in the time to walk a mile, we have that, the majority of the outcomes show little difference in walk times after the program, therefore, the distribution of the sample data is not skewed and can be assumed to be approximately normal
Phil mows lawns during the summer to earn money for college. He makes $50 per mowed lawn. How many lawns must Phil mow to make at least $1,000? Question 18 options: A) At most 20 lawns B) At least 20 lawns C) At most10 lawns D) At least 10 lawns
Answer:
20 lawns
Step-by-step explanation:
$1000 divided by $50 = 20
Simplify. 12/28. Please help due tomorrow!
Answer: 3/7
Step-by-step explanation:
Answer:
the answer is 3/7
For this cylinder the radius r = 6.8 inches and the height L - 14.2 inches. Which is the BEST estimate for the volume? (Use TI = 3.14)
Answer:303.19
Step-by-step explanation: HOPE I HELPED
find the probability that a randomly selected point within the circle falls in the red shaded area round to the nearest hundredth r = 4 cm 2.5 cm 3 cm 3 cm
Answer:
[tex]p\approx 0.39[/tex]
Step-by-step explanation:
We are given a circle of radius 4 cm, and a triangle inscribed within the circle with a vertical height of 6.5 cm and a base of 6 cm.
To find the probability a randomly selected point lands in the red area, we can divide the red area by the total area.
The area for a circle is given by:
[tex]A=\pi r^2[/tex]
Since the radius is 4 cm, the area of the circle or total area is:
[tex]A=\pi (4)^2=16\pi \text{ cm}^2[/tex]
The area for a triangle is given by:
[tex]\displaystyle A=\frac{1}{2}bh[/tex]
The base of the triangle is 6 cm total and the vertical height is 6.5 cm. Therefore, the area is:
[tex]\displaystyle A=\frac{1}{2}(6)(6.5)=19.5\text{ cm}^2[/tex]
The probability of landing in the red shaded area is:
[tex]\displaystyle p=\frac{\text{Red Region}}{\text{Total Region}}[/tex]
Therefore:
[tex]\displaystyle p=\frac{19.5}{16\pi}\approx 0.39=39\%[/tex]
What is the area of the shaded region?
Answer:
17,680 ft²
Step-by-step explanation:
Shaded area = entire shaded rectangle area - unshaded rectangle area - square area
A = 200(100) - 24(30) - 40²
A = 20,000 - 720 - 1600 = 17,680
The sum of three consecutive integers is 33. What are the numbers?
Answer:
10,11,12
Step-by-step explanation:
Divide 33 by 3 and get 11. So the number 11 a number 1 less than 11 and a number one more than 11 will get you the correct answer.
.
Write the expression in exponential form, and then evaluate
0.75x 0.75x 0.75
=
Answer:
3
.75
the solved version would be .421875
the numbers on top are translated in English to .75 to the power of 3.
Step-by-step explanation:
I'm pretty sure this is correct
please hepl with this math
Answer:
3,10,17,24
Step-by-step explanation:
An Arithmetic progression or arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant.
3,10,17,24
the difference is 7
5 - 3(7n + 8) =??????????
Answer:
-21x-19
Step-by-step explanation:
Answer:
The answer is -19 - 21n
by the way in the image those are the letter N, I hope this helps you :)
Calculator
Enter the unknown value that makes this statement true:
25% of O
is 30.
->
-
1
2
3
Answer:
X = 120
Step-by-step explanation:
here's your solution
=> we need to find the number whose 25%
is 30
=>. now , let the number be X
=> solve for X
=>. 25/100*X = 30
=> X = 30*100/25
=> X = 120
hope it helps
Henry draws a rectangle that is 3 inches wide and 4 inches long describe another rectangle Henry could draw that would have the same area but a different perimeter
Answer:
2x6 rectangle
Step-by-step explanation:
area
3×4=12
2x6=12
perimeter
3+3+4+4=14
2+2+6+6=16
A study was designed to test whether applying metal tags is detrimental to a penguin. One variable examined is the survival rate 10 years after tagging. The scientists observed that 10 of the 50 metal tagged penguins survived, compared to 18 of the 50 electronic tagged penguins. Construct a confidence interval for the difference in proportion surviving between the metal and electronic tagged penguins (). Let be the proportion of penguins with metal tags that survived and be the proportion of penguins with electronic tags that survived. Round your answers to three decimal places.
Complete question :
A study was designed to test whether applying metal tags is detrimental to a penguin. One variable examined is the survival rate 10 years after tagging. The scientists observed that 10 of the 50 metal tagged penguins survived, compared to 18 of the 50 electronic tagged penguins. Construct a 90% confidence interval for the difference in proportion surviving between the metal and electronic tagged penguins (). Let be the proportion of penguins with metal tags that survived and be the proportion of penguins with electronic tags that survived. Round your answers to three decimal places.
Answer:
(-0.305 ; - 0.015)
Step-by-step explanation:
Sample size, n1 = 50
x1 = 10
n2 = 50
x2 = 18
P1 = x1 / n1 = 10/50 = 0.2
P2 = x2 / n2 = 18 /50 = 0.36
1 - P1 = 0.8 ; 1 - P2 = 0.64
Zcritical at 90% = 1.645
Confidence interval :
(P1 - P2) ± Zcritical * standard error
Standard Error = sqrt[(p1(1-p1))/n1 + (p2(1-p2))/n2]
S.E = sqrt((0.2(0.8))/50 + 0.36(0.64))/50)
S.E = sqrt((0.0032 + 0.004608))
S. E = sqrt(0.007808)
S. E = 0.0883628
(0.2 - 0.36) ± (1.645 * 0.0883628)
-0.16 ± 0.145356806
Lower boundary = - 0.16 - 0.145356806 = −0.305356806
Upper boundary = - 0.16 + 0.145356806 = −0.014643194
(-0.305 ; - 0.015)
PLS HELP HELP ME WITH a question pls
Step-by-step explanation:
d.
e +e+25=180°{sum of angle of triangle}
2e+25=180°
2e=155
e=155/2
e=77.5°
e.
55°+55°+f=180°{sum of angle of triangle}
f=180-110
f=70°
hope it helps.
Explain how you would use fraction bars to find the quotient of 10/12 divide 4/6. What is the quotient?
Answer:
(10/12) / (4/6) when dividing with fractions, flip what you're dividing by, then multiply
10/12 * 6/4 = 10/8 which reduces to 5/4 or 1 1/4
PLSSS HELP DUE IN 5 MINUTES!!!!
PLEASE DO NOT ANSWER JUST FOR POINTS!!!
LOOK AT THE IMAGE FOR THE QUESTIONS AND ANSWERS
NOTE: The first answer “(0,9)” is incorrect I tried and it was wrong so please it’s either (9,0) or (3,0)
Answer:
I think it's (0,3) sorry if it not
Answer:
(3, 0)
Step-by-step explanation:
The vertex point is 3 units to the right of the origin, making the x-coordinate 3, but it doesn’t move up or down, meaning that the y-coordinate is 0.
so it’s (3,0)
Btw, the vertex is the point of the parabola where it’s the minimum or maximu (minimum in this case). You answered for the y-interceptm which is where the parabola touches the y-axis.
5th grade math. correct answer will be marked brainliest.
Answer:
1, 2, 4, 11, 22, 44.
Step-by-step explanation:
Hope this helps :)
What is the correct step to solve this equation?
m + 4 = 10
A. Subtract 4 from both sides
B. Subtract 10 from both sides
C. Add 4 to both sides
D. Add 10 to both sides
50 POINTS... HELP. FIND AC=
9514 1404 393
Answer:
AC = 25
Step-by-step explanation:
The product of the near and far distances from C to the circle is the same for each segment. For segment CD, the near and far distances are the same. So, we have ...
CD² = CB·CA
CA = CD²/CB = 15²/9 = 25
The length AC is 25 units.
_____
It seems possible that in some other versions of this question you might be asked to find x. Then you have ...
AB = AC -BC = 25 -9 = 16
3x +1 = 16 . . . substitute for AB
3x = 15 . . . . . subtract 1
x = 5 . . . . . . . divide by 3
Q. You're working in the sedan section of
Dean's Car Dealership. A customer makes a
down payment of 15% on a new car that costs
$13,450. How much is the down payment?
A. $201.75
B. $2,017.50
C. $269.00
D. $2,690.00
Answer:
B
Step-by-step explanation:
[tex]15%of$13,450=$2,017.50[/tex]%[tex]of13,450=2,017.50[/tex] therefore the down payment is $2,017.50
hey guys i need some help on this division problem i have
Answer:
3. 25/28
4. 1 1/7
Step-by-step explanation:
when you divide fractions just flip one of them and then multiply across
so instead of 5/7 ÷ 4/5 its
5/7 • 5/4
please mark me brainliest to help me get ace rank
I need help with this !!!
Answer:
no it cannot be
Step-by-step explanation:
because :
2/10 equals to 10/2 So 6/10 ÷ 2/10 =6/10×10/2
6×10=60
10×2=20 after reducing the fraction its 3/1
Decrease £2123 by 8%
Answer:
1,953.16
Step-by-step explanation:
I hope this helps!
Marty saved $200 this month. That is 50% of the money he earned mowing lawns. How much money did Marty earn mowing lawns? dollars.
Answer:
400
Step-by-step explanation:
half of 400 is 200? i need more letterssss
Evaluate each expression.
PLS HELP
Simply the expression by combining like terms.
6x+9+2x+4=
Answer:
Combine like terms: 18x + 15x = 33x
(45 + 33x + 6x2)
Step-by-step explanation:
Answer:
Combine like terms: 18x + 15x = 33x
(45 + 33x + 6x2)
Step-by-step explanation:
pls help me with this math question pls Pls
Answer:
Hey V...
Step-by-step explanation:
This is ur answer....
Triangle fixed value = 180= 180 - (68 + 35)
= 180 - (68 + 35) = 180 - 103
= 180 - (68 + 35) = 180 - 103= 77
Hope it helps you,
Mark me brainliest plz....
FOLLOW ME! ;)