Answer:
Number of nickels: 2,
Number of dimes: 6
Step-by-step explanation:
Say d ⇒ number of dimes, n ⇒ number of nickels; from this we can formulate two equation knowing the cost per dime ⇒ $ 0.1, and the cost per nickel ⇒ $0.05
d + n = 8,
0.1 * d + 0.05 * n = 0.7 ⇒ Let us solve through substitution
d = 8 - n into 0.1 * d + 0.05 * n = 0.7,
0.1 * ( 8 - n ) + 0.05 * n = 0.7,
0.8 - 0.1 * n + 0.05 * n = 0.7,
0.8 - 0.1n + 0.05n = 0.7,
- 0.05n = - 0.1,
Number of nickels: 2 ⇒ Now let us substitute this value into the first equation as to solve for d, dimes
d = 8 - 2,
Number of dimes: 6
Jack runs 7 tenths of a kilometre further than Whitney . How far does Jack run
Answer:
more than witney
Step-by-step explanation:
There are ten kids in a class. When any two meet, each says “hi” to the other and the answer “hi” follows. Before the class starts, how many times would one hear the word “hi”?
Answer: 20
Step-by-step explanation:
From the question, there are ten kids in a class and when any two meet, each kid says “hi” to the other kid and the answer “hi” follows.
The number hi one would hear before the class starts would be 10 multiplied by 2 because there are 10kids and 2 hi whenever the kids greet.
= 10 × 2
= 20hi
There will be 20 times the word hi would be heard
Answer:
90 times
Step-by-step explanation:
THIS IS CORRECT!!!!!!
An ellipse is represented using the equation (x+5)^2/625+(y-7)^2/49= 1. Where are the foci of the ellipse located? Check all that apply
Answer: (-29,7) and(19,7)
Step-by-step explanation:
Which of the following numbers is closest to the mean of this distribution?
A. 5
B. 4
C. 3
D. 7
E. 9
Answer: 3
Step-by-step explanation: if you had the histogram..... the first is 14 and the second is 14 too, but the first one you divide by 4 because there are only 4 lines, so that gives you 3.5
The second one you divide by 5
So, 14 divided by 5 is
2.8
If you round both of these you should have around 3
Therefore, the answer is 3
Terry scored 71, 80, and 86 on his first three history tests. What must terry score on the fourth test to have a mean of exactly 80
Answer:
83
Step-by-step explanation:
You are trying to find the score that gives you a specific mean. A mean is calculated by dividing the sum of the data by the amount of data. Set up in this order, with x as the fourth score, to find the answer.
[tex]\frac{71+80+86+x}{4}=80\\\frac{237+x}{4} =80\\237+x=320\\x=83[/tex]
The fourth test score must be an 83.
Answer:
83
Step-by-step explanation:
Equation: 71 + 80 + 86 + x / 4 = 80
Add 71, 80, and 86 together.
237 + x = 80
Multiply 4 to both sides (cross multiplying).
237 + x = 320
Subtract 237 from both sides.
x = 83
Elana is programming a video game. She needs to simulate the power up that the player gets when they reach a certain level. The computer can run a program to return a random integer between 1 - 100. Elana wants the best power up to be rewarded 15% of the time. Explain how Elana can use the computer to simulate the player getting the best power up at least 2 out of 3 times
Answer:
You have to define when the power should be pushed up using the 'For' statement and let an impulse be sent to the CPU to increase power by 15%
Step-by-step explanation:
We use certain functions in writing computer programs.
For the 'For' statement ; we can define conditions. First Elana would define at what point does she want the player power to get the best power.
For example if she defines that when the player has played for 2hours return an integer 1 for instance.
This value returned will now send a pulse to the CPU to increase its power to 15%.
If the player plays for further 1hour she can define the count to be 10 and so send another pulse to the CPU to increase the processing power by additional 15%
PLZ HELP! I am stuck on his question.
The ages of two exercise groups at a local fitness center are listed below.
Group A: 37 36 32 41 42 36 44 45
Group B: 26 40 38 36 42 40 40 36
Which statement about the data is true?
The mean age is the same for both groups
The range of ages is greater in Group A than in Group B
The mode of the ages for both groups is 36
The median age is the same for both groups
Answer:
The median age is the same for both groups
Step-by-step explanation:
Group A:
37, 36, 32, 41, 42, 36, 44, 45
32, 36, 36, 37, 41, 42, 44, 45
Mean: (32+36+36+37+41+42+44+45)÷8=39.125
Range: 45-32=13
Mode: 36
Median: (41+37)÷2=39
Group B:
26, 40, 38, 36, 42, 40, 40, 36
26, 36, 36, 38, 40, 40, 40, 42
Mean: (26+36+36+38+40+40+40+42)÷8=37.25
Range: 42-26=16
Mode: 40
Median: (40+38)÷2=39
Only the median in both groups are the same.
Answer:
The median age is the same for both groups
Step-by-step explanation:
I just did the Exam!
What are the leading coefficient, constant term and degree, if any, of the algebraic expression 7^x + 2x + 1? a. leading coefficient: 2; constant term: -1; degree: 2 c. leading coefficient: 2; constant term: 1; degree: -2 b. leading coefficient: -2; constant term: 1; degree: 2 d. none, expression is not a polynomial Please select the best answer from the choices provided A B C D I TRIED AND C IS WRONG
Step-by-step explanation:
Step 1: Answer the question
This algebraic expression is not a polynomial therefore, none of these options match except D. The reason why it is not a polynomial is because there is a 7^x which is not a polynomial expression. The expression needs to be expressed as a 7x^2 + 2x + 1. Therefore, the answer is D.
Answer: D, none
answer the question for 10 points
Answer:
D. Division and Addition
Step-by-step explanation:
I'm dumb please help
Answer:
35 inches
Step-by-step explanation:
Regular, means that all the sides of the pentagon are the same, so you can multiply 21 * 5/3 = 35
Pleaseee HELPP I will give a brain thing and A THANK You
im sorry but i cant see the orange cuboid number at the bottom but i'll consider its a 5cm (i hope its correct)
firstly, you have to find the area of EACH faces then just add them togeher
whereas, diagram A
9 x 9 = 81 ( 1 face)
* since cube has 6 faces then just multiply by 6 then
answer: 486 cm²
for diagram B
front and back faces: 2(5x7)
left and right faces: 2(15x7)
top and bottom: 2(5x15)
answer: 430cm²
then compare between 486 and 430
answer should be 486 > 430
hope this helps :)
Answer:
5 cm
Step-by-step explanation:
how would you go about doing this
Answer:
3.4x7.6 then divide by 2
Answer:
Step-by-step explanation:
the formula of a triangle is
b * h
2
so 7.6 * 3.4
=25.84/ 2
=12.92 cm²
Whoever gets the answer right, gets the Brainliest. MUST BE CORRECT.
Answer:
it is b
Step-by-step explanation:
Answer:
the answer is b and im doing this to show u people that there has to be only 2 answers to a quetion to give brainliest
Step-by-step explanation:
A canvas shopping bag has a mass of 600 grams. When 5 cans of equal mass are put into the bag, the filled bag has a mass of 4 kilograms. What is the mass of each can in grams?
Answer:
Mass of each can = 680 grams
Step-by-step explanation:
Mass of a canvas shopping bag = 600 grams Or [tex]\frac{600}{1000}[/tex] Kilograms
= 0.6 Kilograms
Let the mass of each can = w Kilograms
Then the mass of 5 cans = 5w Kilograms
Total mass of the bag when these cans were kept in the bag = 4 Kilograms
(5w + 0.6) = 4
5w + 0.6 - 0.6 = 4 - 0.6
5w = 3.4
w = [tex]\frac{3.4}{5}[/tex]
= 0.68 Kilograms
= [tex]0.68\times 1000[/tex]
= 680 grams
Therefore, mass of each can = 680 grams
Answer:
680
Step-by-step explanation:
mark brainiest
a system of equations has no solution if y=8x+7 is one of the equations, which could be the other equation?
Answer:Un sistema de ecuaciones es un conjunto de ecuaciones con las mismas incógnitas. Un
sistema de ecuaciones lineales es un sistema de ecuaciones en el que cada ecuación es lineal. Una solución de un sistema es una asignación de valores para las incógnitas que hace
verdadera cada una de las ecuaciones. Resolver un sistema signifi ca hallar todas las soluciones del sistema.
Veamos a continuación un ejemplo de un sistema de ecuaciones lineales con dos incógnitas:
Ecuación 1
Ecuación 2 b
2x y 5
x 4y 7
Podemos comprobar que x 3 y y 1 es una solución de este sistema.
Ecuación 1 Ecuación 2
2132 1 5 3 4112 7
2x y 5 x 4y 7
Step-by-step explanation:
Answer:
Translated to english from person who answered before
Step-by-step explanation:
A system of equations is a set of equations with the same unknowns. A
Linear equation system is a system of equations in which each equation is linear. A solution of a system is a mapping of values for unknowns that makes
true each of the equations. Solving a system means finding all the solutions in the system.
Here's an example of a system of linear equations with two unknowns:
Equation 1
Equation 2 b
2x and 5
x 4 and 7
We can check that x 3 and y 1 is a solution of this system.
Equation 1 Equation 2
2132 1 5 3 4112 7
2x and 5 x 4y 7
60 is 30 percent of what number
Answer:
50
Step-by-step explanation:
The solution of number is, 200.
We have to given that;
To find a number which is 30% of number is 60.
Let us assume that,
A number is, x
Hence, We can formulate;
⇒ 60 = 30% of x
⇒ 60 = 30/100 × x
⇒ 60 = 3x / 10
⇒ 600 = 3x
⇒ 3x = 600
⇒ x = 200
Thus, The solution of number is, 600
Learn more about the percent visit:
https://brainly.com/question/24877689
#SPJ6
How would you multiply a binomial using box method
Answer:
first you divide the larger number into its separate parts. Here, 23 becomes 20 and 3.
Next, you multiply each separate part — 20 x 7 and 3 x 7.
Finally, you add all the products together. 140 + 21 equals 161, the product of 23 x 7.
Step-by-step explanation:
On the Venn diagram, which region(s) represent the intersection of Set A and Set B (A∩B)?
Answer:
the middle. because it'sthe intersection of the circles
Answer:
ll
Step-by-step explanation:
the middle intersection point of i and just took the quiz
Comeplete the equivalent equation of -7x-60=x(2)+10x
Answer:
[tex]3 \frac{3}{ 19} [/tex]
What is the mean?
97 3 0 4 7
Answer: 22.2
Step-by-step explanation: You have to add 97, 3, 0, 4, 7 and then then divide the total by how many numbers you added. So for this you would divide the total by 5
The sum of 5 times a number 8 and 7 is .
Answer: 47
Step-by-step explanation:
first no. : 5× 8=40
second no. : 7
sum=40+7=47
PLEASE RATE 5 STARS AND VOTE AS BRAINLIEST:)
(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)
What point is symmetric to (2,7) on this quadratic graph?
OPTIONS
• (-5,0)
• (-2,4)
• (2,-1)
• (-6,7)
Answer: (-6,7)
Step-by-step explanation:
Tow points, (x1, y1) and (x2, y2) are simetric in a quadratic graph when:
f(x1) = y1 = f(x2) = y2
so y1 = y2
Then if we have the point (2,7) we want to find other point that has the same value for y, this is (-6, 7)
So the correct option is (-6,7)
The Captain has probability \dfrac{1}{2}
2
1
start fraction, 1, divided by, 2, end fraction of hitting the pirate ship. The pirate only has one good eye, so he hits the Captain's ship with probability \dfrac{1}{5}
5
1
start fraction, 1, divided by, 5, end fraction.
Only do question 8
50 points
Topic: Percentage
Answer:
see below
Step-by-step explanation:
To change from a decimal to a fraction count the number of decimals and add that many zeros after the 1 in the denominator, then simplify
To change a decimal to a percent, move the decimal to places to the right and add a percent sign
To change a fraction to a decimal divide the numerator by the denominator
To change a percent to a decimal move the decimal 2 places to the left and remove the percent sign( if there are fractions, change to a decimal)
113/1000 = .113 = 11.3 %
2275/1000 =91/400 .2275 22 3/4%
1/200 .005 .5%
3 85/100 3.85 385%
Which table correctly represents these functions?
Answer:
Graph C.
Step-by-step explanation:
C works the best when you plot the points on a graph, in reference to the functions provided...
*blue is the G(x) and red is the f(x) I believe*
Have a Great Day!
Find the mean of the data.
Megabytes of Data Used
85
206
0
109
62
28
460
149
98
The mean is
megabytes of data used.
what is the mean of the data
Answer:
Mean (Average): 133
Step-by-step explanation:
Convert the rectangular equation x ^ 2 + y ^2 = 2 y to polar form
Answer:
Step-by-step explanation:
The main equivalence between rectangular and polar forms is
x^2 + y^2 = r^2, where r is the radius. Next, y = r sin Ф. Thus,
x^2 + y^2 = r^2 becomes r² = 2·r·sin Ф.
The variable r can be factored out partially: r = 2·sin Ф
This is the polar form of x^2 + y^2 = 2y.
A fish and wildlife management organization uses a GIS (Geographic Information System) to store and analyze data for the parcels of land it manages. All of the parcels are mapped on a grid in which 1 unit represents 1 acre. If the coordinates of the corners of a parcel are (-8, 10), (6, 17) and (2, -4), how many acres is the parcel? a. 150 acres c. 133 acres b. 125 acres d. 167 acres
Answer:
c. 133 acres
Step-by-step explanation:
Given: coordinates of the corners of a parcel are (-8, 10), (6, 17) and (2, -4)
To find: area of the parcel
Solution:
Using heron's formula,
area of triangle joining coordinates [tex](x_1,y_1),(x_2,y_2),(x_3,y_3)[/tex] is equal to [tex]\frac{1}{2}|x_1(y_2-y_3)+x_2(y_3-y_1)+x_3(y_1-y_2)|[/tex]
Let [tex](x_1,y_1)=(-8,10)\,,\,(x_2,y_2)=(6,17)\,,\,(x_3,y_3)=(2,-4)[/tex]
Area of triangle (parcel) [tex]=\frac{1}{2}|-8(17+4)+6(-4-10)+2(10-17)|\\[/tex] [tex]=\frac{1}{2}|-8(21)+6(-14)+2(-7)|\\ =\frac{1}{2}|-168-84-14|\\ =\frac{1}{2}|-266|\\ =133\,\,acres[/tex]
The number of purses a vendor sells daily has the probability distribution represented in the table. Number of Purses, x 0 1 2 3 4 5 P(x) 0.35 0.15 0.2 0.2 0.03 0.07 If each purse sells for $50.00, what is the expected daily total dollar amount taken in by the vendor from the sale of purses? $1.62 $35.00 $79.30 $81.00 $162.00
Answer:
(D)$81
Step-by-step explanation:
Given that the number of purses a vendor sells daily has the probability distribution represented in the table.
Expected Value, [tex]E(x)=\sum_{i=1}^{n}x\cdot p(x)[/tex]
Therefore:
[tex]E(x)=(0X0.35)+(1X0.15)+(2X0.2)+(3X0.2)+(4X0.03)+(5X0.07)\\=0+0.15+0.4+0.6+0.12+0.35\\E(x)=1.62[/tex]
If each purse sells for $50.00, the number of expected daily total dollar amount taken in by the vendor from the sale of purses
=Expected Value X $50
=1.62 X $50
=$81
The correct option is D.
MATH HOMEWORK HELP PLEASE I ONLY NEED 22 and 23 DONE
C. 0.42 I did this right before the pandemic