Answer:
28 students
Step-by-step explanation:
Let number of students in cooking club = x
Number of students in fencing club = 1/5 x
Number of students in chess club = 2(1/5)x
Since, There are 42 more students in the cooking club than in the chess club
Then ;
Number of students in chess club = Number of students in cooking club - 42
2(1/5)x = x - 42
(2/5)x - x = - 42
(2/5)x - x = - 42
-0.6x = - 42
x = 42 / 0.6
x = 70
Hence, number of students in chess club :
(2/5) * 70 = 28
Lance earned $27 for mowing 3 lawns. What is the rate earned per lawn mowed?
15x-7=2+12x I need help with this
Answer:
[tex] \huge{ \boxed{ \bold{ \tt{x = 3}}}}[/tex]
♁ Question : Solve for x15x - 7 = 2 + 12x♁ Step - by - step explanation [tex] \text{15x - 7 = 2 + 12x}[/tex]Move 12x to L.H.S ( Left Hand Side ) and change it's sign
➛[tex] \sf{15x - 12x - 7 = 2}[/tex]
Move 7 to R.H.S ( Right Hand Side) and change it's sign
➛[tex] \sf{15x - 12x = 2 + 7}[/tex]
Subtract 12x from 15x
Remember that only coefficients of like terms can be added or subtracted.
➛[tex] \sf{3x = 2 + 7}[/tex]
Add the numbers : 2 and 7
➛[tex] \sf{3x = 9}[/tex]
Divide both sides by 3
➛ [tex] \sf{ \frac{3x}{3} = \frac{9}{3}} [/tex]
➛ [tex] \boxed{ \bold{ \sf{x = 3}}}[/tex]
The value of x is [tex] \boxed{ \sf{3}}[/tex]
✄ ✄ ✄ ✄ ✄ ✄ ✄ ✄ ✄ ✄ ✄ ✄ ✄ ✄ ✄
☄ Now, let's check whether the value of x is 3 or not!
☥ Verification :[tex] \sf{15x - 7 = 2 + 12x}[/tex]
[tex] \dashrightarrow{ \sf{15 \times 3 - 7 = 2 + 12 \times 3}}[/tex]
[tex] \dashrightarrow{ \sf{45 - 7 = 2 + 36}}[/tex]
[tex] \dashrightarrow{ \sf{38 = 38}}[/tex]
L.H.S = R.H.S ( Hence , the value of x is 3 ).
✄ ✄ ✄ ✄ ✄ ✄ ✄ ✄ ✄ ✄ ✄ ✄ ✄ ✄ ✄
✒ Rules for solving an equation :If an equation contains fractions ,multiply each term by the L.C.M of denominators.Remove the brackets , if any.Collect the terms with the variable to the left hand side and constant terms to the right hand side by changing their sign ' + ' into ' - ' and ' - ' into ' + ' .Simplify and get the single term on each side.Divide each side by the coefficient of variable and then get the value of variable.Hope I helped!
Have a wonderful time ! ツ
~TheAnimeGirl
13. A local car wash is open 8 hours each day.
It uses 2/3 of a container of wax for each car.
The car wash waxes an average of 8.5 cars per hour.
According to the given information, how many containers of wax does the car wash use in one day?
?????????????????????????????
Area
What is the area for this shape??
Answer:
100cm² is the area of this shape
Please help ASAP will mark brainiest!!!
Answer: 5 to the power of 2
Step-by-step explanation:
Answer:
[tex]5^{2}[/tex]
Step-by-step explanation:
[tex]\frac{5^4 x 5^3}{5^5} = \frac{5^7}{5^5} = 5^2[/tex]
What is the slope of points (11,13) and (-8,-19)?
Answer:
The answer is 32/19
Step-by-step explanation:
rise over run.
Solve: 3+y=8
What is the answer
Answer: Y = 5
Step-by-step explanation:
The ratio of women to men working at a grocery store is 4 to 5. There are 16 women working at the store . What is the total number of people working at a grocery store?
Answer:
36 people
Step-by-step explanation:
The ratio of women to men working at a grocery store is 4 to 5.
The ratio =
Women : Men
4 : 5
The sum of the proportion is 4 + 5 = 9
There are 16 women working at the store .
Let us represent the total number of people working at a grocery store as x
Hence:
4/9 of x = 16 women
4/9 × x = 16
4x/9 = 16
Cross Multiply
4x = 16 × 9
x = 16 × 9/4
x = 36 people
The total number of people working in the grocery store is 36 people
The two lines graphed below are not parallel. How many solutions are there to
the system of equations?
A. Two
B. Zero
C. Infinity many
D. One
Answer:
D. One solution due to the connection
A tanker truck fills the gas station’s reservoir at the rate of 12 1/2 gallons per minute.
If the reservoir was empty and it is now 35 gallons full, how long has the tanker been filling the reservoir?
Answer: 2.8 minutes
Step-by-step explanation:
If it takes 12.5 gallons per minutes to fill the reservoir, then we have to divide 35 and 12.5.
35 ÷ 12.5 = 2.8 minutes
Since it takes 12.5 gallons per minutes to fill the reservoir, it will take 2.8 minutes to fill the reservoir.
hope this helps!
Answer:
A submarine descends at a rate of 2.6 kilometers per hour.
If the ocean floor is 6.24 kilometers below sea level, how long will it take the submarine to descend to the ocean floor?
Round your answer to the nearest tenth. Enter your answer in the box.
answer:
2.4
hours
Step-by-step explanation:
Your science teacher tells you that the next test is worth $0 points and contains 19 problems. Multiple-choice
questions are worth 2 points each and short answer questions are worth 5 points. Find how many of each type of
question will show up on the test.
Answer:
The test had
30
multiple choice questions, and
8
word problems.
Step-by-step explanation:
What is the value of the expression (23 — 1) + 32?
Answer:
54
Step-by-step explanation:
Since there are parantheses or however you spell them, by using PEMDAS, we do the parantheses first.
23 - 1 = 22
Now, we do the addition.
22 + 32 = 54
Answer:
54
Good luck! And have a great day!
A boat travels 348 miles in 58 hours (with constant speed) How far can it travel in 40 hours (with the same speed
Answer:
240
Step-by-step explanation:
348 mi. / 58 hrs. = 6 mph
6 mph × 40 mi. = 240 mi.
Please help me out!
Answer:
A. [tex] \sqrt {38}[/tex]
Step-by-step explanation:
Since the given point lie between 6 and 7 and is close to 6.
Therefore, the given point represents the [tex] \sqrt {38}[/tex].
determine the intercepts of the line x intercept ...... y intercept ?
Answer:
Step-by-step explanation:
x-intercept if when y is 0, so, on the x-axis. as we can see the x-intercept is -40
y-intercept if when x is 0, so, on the y-axis. as we can see the y-intercept is 15
Answer:
x-intercept: [tex](-40,0)[/tex]
y-intercept: [tex](0,15)[/tex]
Step-by-step explanation:
The x-intercept is the point where the line meets the x-axis, and the y-intercept is the point on the line which meets the y-axis.
The line intersects the y-axis at [tex]15[/tex], so the y-intercept is [tex](0, 15)[/tex].
The line intersects the x-axis at [tex]-40[/tex], so the x-intercept is [tex](-40, 0)[/tex].
Hope this helps :)
which one is not a function
Answer: C
Step-by-step explanation:
C because one x values cant have two y values
A movie theater has a seating capacity of 233. The theater charges $5.00 for children, $7.00 for students, and $12.00 of adults. There are half as many adults as there are children. If the total ticket sales was $ 1692, How many children, students, and adults attended? I kinda need to know these answers asap. I have tried everything to try and solve it but nothing worked. Please help.
Answer:
49 adults; 2*49 = 98 children and (207-3*49) = 60 students.
Step-by-step explanation:
hope this helps!! :))
122 children, 50 students, and 122 adults attended the movie theatre.
What is an equation?A mathematical expression with an equality sign between two mathematical expressions is an equation.
How to solve it?Let the number of students in the theater = x and the number of children in the theater = 2y
Since the number of adults in theater = Half of the number of children = 2y/2 = y
Given that the total seating capacity in the theater = 233
So, we can write
x + 2y + y = 233
i.e. x + 3y = 233 ...(1)
Given that the cost of 1 children's ticket = $5
i.e. the cost of 2y children tickets = 5 x (2y) = $10y
The cost of 1 student ticket = $7
i.e. the cost of x student ticket = $7x
The cost of 1 adult ticket = $12
i.e. the cost of y adult tickets = $12y
Since the total ticket sales was $1692,
So, we can write
10y + 7x + 12y = 1692
i.e. 7x + 22y = 1692 ...(2)
Now we have to solve the two equations (1) and (2).
multiplying (1) by 7,
7x + 21y = 1631 ...(3)
Subtracting (3) from (2),
7x + 22y - 7x - 21y = 1692 - 1631
i.e. y = 61
then 2y = 122
and x = 233 - (3 x 61) = 233 - 183 = 50
Therefore 122 children, 50 students, and 122 adults attended the movie theatre.
Learn more about the equations here -
https://brainly.com/question/13980943
#SPJ2
*Who ever answers gets brainliest answer!*
State the terms, like terms, coefficients and constants for the following algebraic expression
1. 4m - 5m
Terms
Like Terms
Coefficient
Constant
Answer:
Step-by-step explanation:
answer is -1m.
1 like term (m)
coefficeint: 4 and -5
no constants.
HELP ME PLLZZZ+GOD LOVES YOU!
Last year at a certain high school, there were 80 boys on the honor roll and 88 girls on the honor roll. This year, the number of boys on the honor roll increased by 15% and the number of girls on the honor roll increased by 25%. By what percentage did the total number of students on the honor roll increase? Round your answer to the nearest tenth (if necessary).
Answer:
40%
Step-by-step explanation:
15% + 25% = 40%
what is the height of a triangle if the area is 28 in2 and the base is 7
Answer:
it's 8 inches
Felipe has 3/4 acre of land to use for a vegetable garden. He separates the land into vegetable plots that are each 1/12 acre. How many vegetable plots does Felipe have? Explain how to use the number line to model this situation and find the answer.
Answer:
1) The number of vegetable plot Filipe has = 9 vegetable plots
2) A number line with 1/12 divisions will give the number of 1/12 acre vegetable plots as the number of divisions between 0 and 3/4
Step-by-step explanation:
1) The total size of the land Filipe has = 3/4 acre
The size of the vegetable plots to which he separates the land = 1/12 acre
The number of vegetable plot Filipe has = (The total size of the land Filipe has)/(The size of the vegetable plots to which he separates the land )
∴ The number of vegetable plot Filipe has = (3/4)/(1/12) = 9
The number of vegetable plot Filipe has = 9 vegetable plots
2) The number line can be used to model the situation by having the number line that has divisions of 1/12 unit and counting the number of 1/12 divisions between the zero (0) mark and the three quarter (3/4) mark
PLEASE GIVE BRAINLIEST!!
answer:
9 plots
explanation:
Felipe has 3/4 acres of land to use and she is dividing that into plots. Those plots are 1/12 of her acre so you divide 3/4 by 1/12
6630 was rounded to the nearest ten. What is the lower bound? this is urgent plz answer fast
Answer: 6630
Step-by-step explanation:
When rounding to the nearest ten, like we did with 6630 above, we use the following rules:
A) We round the number up to the nearest ten if the last digit in the number is 5, 6, 7, 8, or 9.
B) We round the number down to the nearest ten if the last digit in the number is 1, 2, 3, or 4.
C) If the last digit is 0, then we do not have to do any rounding, because it is already to the ten.
if f(x)=-2x+17, then calculate f(2)
Answer:
f(2) = 13
Step-by-step explanation:
To evaluate f(2), substitute x = 2 into f(x) , that is
f(2) = - 2(2) + 17 = - 4 + 17 = 13
can some one help me
Answer:
children is 48 and adults is 8.25 and children is 90
Step-by-step explanation:
HELP
If a certain cannon is fired from a height of 8.4 meters above the ground, at a certain angle, the height of the cannonball above the ground, h,
in meters, at time, t, in seconds, is found by the function h(t) = -4.91? + 30.5t + 8.4. Find the time it takes for the cannonball to strike the
ground.
Answer:
The time it takes for the cannonball to hit the ground is 6.49 seconds.
Step-by-step explanation:
You know that the height of the cannonball above the ground, h, in meters, in time, t, in seconds, is found by the function h(t) = -4.9t² + 30.5t + 8.4. You want to calculate the time it takes for the cannonball to hit the ground, that is, the time it takes for the bullet to reach zero height. So, being h(t) = 0 you have:
0 = -4.9t² + 30.5t + 8.4
To solve a quadratic function 0=a*x² + b*x +c, the expression is applied:
[tex]\frac{-b+-\sqrt{b^{2} -4*a*c} }{2*a}[/tex]
In this case, being a = -4.9, b =30.5 and c =8.4 you have:
[tex]\frac{-30.5+-\sqrt{30.5^{2} -4*(-4.9)*8.4} }{2*(-4.9)}[/tex]
Solving you get:
t1= -0.26 seconds and t2=6.49 seconds
Since time does not have a negative value, then the time it takes for the cannonball to hit the ground is 6.49 seconds.
Does anyone know how the app remind works? my math teacher told us to sign up for it, i did but idk how to use it.
Answer:
you can ask questions and answer questions the more questions you answer the higher your rank gets and the more points you earn
Step-by-step explanation:
A fair spinner has 10 equal sections.
A
A
B
B
C
A
A
Put a cross on the scale to show the probability of landing on the letter A.
Answer:
there would be a possibility
Step-by-step explanation:cuz ratio form would be A:B:C
(4:2:1)
BRACKETS IS WHET U NEED TO LOOK AT
HELP PLEASE. GIVEN AB, EXPLAIN HOW TO CONSTRUCT A SQUARE WITH SIDES OF LENGTH AB.
Answer:
all sides = AB
Step-by-step explanation:
all sides of a square is equal so if one is AB then the rest is AB too
Franklin is making bags of trail mix for hiking club. He will use 23 ounces of walnuts, 10.1 ounces of almonds, and 25.4 ounces of cashews. This amount makes 25 bags of trail mix. How many ounces are in each bag?
Answer:
(23+10.1+25.4)÷25
2.34