Answer:
x = 5
Step-by-step explanation:
y = 20; y = 4x
20 = y = 4x
20 = 4x
5 = x
x = 5
Answer:
Step-by-step explanation:
Y=2x........ equation 1
Y=20....... equation 2
If y=20 then let's substitute y=20 into equation 1
20=2x
Solve for x by dividing both sides by 2.
20/2=2x/2
x=10.
David's Bikes rents bikes for $11 plus $5 per hour. Mary paid $51 to rent a bike. For how many hours did she rent the bike?
Suppose that 63% of people own dogs. If you pick two people at random what is the probability that they both own a dog.
Answer: 3.175%
Step-by-step explanation:
(63/100)(2/1)
Cross multiply = 200
Then divide 200÷63= 3.175
Answer:
39.69%
Step-by-step explanation:
[tex]\frac{63}{100}[/tex] * [tex]\frac{63}{100}[/tex] = .3969
1) 30% of the 210 7th graders at CBJ said they were planning to leave town for
Spring Break. How many students are NOT planning on leaving town? *
Answer:
30% of 210 is 63
Step-by-step explanation:
Answer:
209.7
Step-by-step explanation: i dont know what ur really asking for which i understand all u have to do simplify the expressions
State which property or relationship is demonstrated in the following examples 7+(9+6)=(7+9)+6
A 12% brine solution was mixed with a 16% brine solution to produce a 15% brine solution. How much of the 12% solution and how much of the 16% solution were used to produce 40 L of the 15% solution?
Answer:
10 liters
Step-by-step explanation:
x=12% solution, y=16% solution
x+y=40
0.12x+0.16y=6 . (12x+16x=600)
-12x-12y=-480
12x+16x=600
+ -12x-12y=-480
-------------------------------
4x=120
x=30
12% solution= 30 liters
16% solution= 10 liters
An equation is a mathematical statement that is made up of two expressions connected by an equal sign.
10L of the 12% of solutions and 30L of the 16% of solutions were used to produce 40L of the 15% of solutions.
What is an equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign.
We have,
Let 12% brine solution be x.
Let 16% brine solutions be y.
12% brine solution was mixed with a 16% brine solution to produce 40L of the 15% solution.
This can be written as,
x + y = 40 ______(1)
0.12x + 0.16y = 0.15 x 40
0.12x + 0.16y = 6 _______(2)
We will solve for x and y.
From (1) we get,
x + y = 40
x = 40 - y _____(3)
Putting ( 3) in (2)
0.12 (40 - y) + 0.16y = 6
4.8 - 0.12y + 0.16y = 6
4.8 + 0.04y = 6
0.04y = 6 - 4.8
0.04y = 1.2
y = 1.2/0.04
y = 30
Putting in (3) we get,
x = 40 - 30 = 10
Thus,
10L of the 12% of solutions and 30L of the 16% of solutions were used to produce 40L of the 15% of solutions.
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If I need 5 eggs to make 30 biscuits, how many eggs will I need to make 90 biscuits?
Answer:
15!!!!is the answer.....
WHOEVER GETS IT RIGHT ILL GIVE YOU THE CROWN!Help ASAP gotta turn it in soon
What’s the 84th term of the arithmetic sequence -5, 15, 35
Answer:
a₈₄ = 1655Step-by-step explanation:
15-(-5) = 20 and 35-15=20 so d=20
[tex]a_n=a_1+d(n-1)\\\\a_1=-5\\d=20\\\\a_{84}=-5+20(84-1)=-5+20\cdot83=-5+1660=1655[/tex]
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If you do I will give you Ten RaMeN NoOdLe bOwLs at Ichiraku Ramen
Its the Best In The Hidden Leaf Village! Believe It!
(Answer All.. be Fast I might eat the noodles)
Answer:
GIVE ME MY RAMEN
Step-by-step explanation:
3.
add like terms
30 + 7k = 100
100-30 = 70
70 divided by 7k = 10
k = 10
4. add the z's together
2z - 6 -2 = -10
+ 6 + 2
-10 will be -2 now since we dragged the -6 and -2 to the other side
2z = -2
z = -1
5. 3.2x - 1.7x = 1.5x
1.5x + 5.5 = 10
10 would be 4.5 since we dragged 5.5 to the other side so it would be 10 - 5.5
3.2x = 5.5
x = 1.71875
6.
3/4x - 1/4x = 2/4x
14 - 3 = 11
2/4x = 11
x = 22
The equation P=6s represents the perimeter P of a regular hexagon with side length s. What is the
perimeter of a regular hexagon with side length 2 mm?
The perimeter is
mm.
Answer:
The perimeter is 12mm
Step-by-step explanation:
Plug 2 for s in P=6s so 6*2=12
0.847 times 3.54
What does it equal
Answer: 2.99838 or rounding to nearest whole number it is 3
Step-by-step explanation:
5) A theater earns $3640 from a concert. An orchestra ticker costs three times as
much as a balcony ticket. Write a system of linear equations that represents this
situation. What is the price of each ticket?
Ticket Type
orchestra
balcony
Number Sold
148
76
Answer:
148x+76y=3640
The orchestra tickets costed $21, the balcony tickets costed $7
Step-by-step explanation:
You do 148x because we know that they sold 148 tickets we just need to know the cost and 76 because we know that have sold 76 balcony tickets.
I’m don’t really know how to say the rest
The price of each ticket will be;
The price of balcony ticket = $910
So, The price of orchestra ticket = $2730
What is an expression?
Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
A theater earns $3640 from a concert.
And, An orchestra ticket costs three times as much as a balcony ticket.
Now,
Since, An orchestra ticket costs three times as much as a balcony ticket.
Let price of balcony ticket = x
So, The price of orchestra ticket = 3x
Hence, We can formulate;
⇒ x + 3x = $3640
⇒ 4x = $3640
⇒ x = $3640/4
⇒ x = $910
Thus, The price of balcony ticket = x
= $910
So, The price of orchestra ticket = 3x
= 3 × $910
= $2730
Thus, The price of each ticket will be;
The price of balcony ticket = $910
So, The price of orchestra ticket = $2730
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Here is a system of equations:
-7x + 3y = -65
-7x + 10y = -135
Write an equation that results from subtracting the two equations.
Answer:
y = -10
Step-by-step explanation:
(-7x+3y) - (-7x +10y) =-65 -(-135)
-7x + 3y + 7x -10y = 70
-7y = 70
y = -10
The equation that results from subtracting - 7x + 3y = - 65 and
- 7x + 10y = - 135 is 7y = - 70.
What are simultaneous equations?We know two simultaneous equations have a unique solution when they intersect at a point,
when they are parallel they have no solution and when they are coinciding they have an infinite no. of solutions.
Given, a system of equations - 7x + 3y = - 65 and - 7x + 10y = - 135.
Subtracting the first equation from the second we get,
- 7x + 10y = - 135
(-) - 7x + 3y = - 65
_________________
Negative sign gets distributed
- 7x + 10y = - 135
+ 7x - 3y = + 65
_________________
7y = - 70
y = - 70/7
y = - 10.
So, the value of x is -7x +10×(-10) = - 135.
- 7x - 100 = - 135.
- 7x = - 135 + 100.
- 7x = - 35.
x = 7.
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(-3/2)x-9=-27 solve for x
Answer:
x=12
Step-by-step explanation:
-3/2x-9=-27
-3/2x=-18
2/-3*-3/2x=-18*2/-3
x=12
i’m so stressed out over this. please help me solve these
Answer:
8x + 406y - 21-6m - 186 - 6z-5x - 1-x - 4ab - 6b7a(3b - 2c + 4)4x + 1[tex]\frac{x}{6} - 4[/tex] 1 - 4wx - 42k - 584x + 246 - 37m25v + 16c - 395p + 42-wx + 3I hope this helps!
identify 2 pairs of angles of the given type.
plsss HELP!!!!!!
Answer:
It is (2,4) Plz mark brainliest
Step-by-step explanation:
Find the value of 5^4 * 5 ^3 *
A movie rental store charges a membership fee of $10.00 plus $1.50 per movie rented. What is a possible domain that shows the cost to a member of renting movies? (1 point)
The domain is all integers.
The domain is all even integers.
The domain is all integers 0 or greater.
The domain is all integers 10 or greater.
I recommed for the people tat are seraching up this question to not read the comments
Luke puts $500 into a savings account that earns 6% simple interest each year. How much money will be in the account after 3 years
Answer:
= $90
Step-by-step explanation:
I = prt
I = 500 x 0.06 x 3
I = $90
9514 1404 393
Answer:
$590
Step-by-step explanation:
The account balance is given by ...
A = P(1 +rt) . . . . simple interest rate r for t years
A = $500(1 +0.06×3) = $590
There will be $590 in the account after 3 years.
is -2 and two fourths a rational number
Answer: Yes
Step-by-step explanation: I looked it up
A salesperson works 40 hours per week at a job where she has two options for being paid. Option A is an hourly wage of $26. Option B is a commission rate of 10% on weekly sales. How much does she need to sell this week to earn the same amount with the two options?
Step-by-step explanation:
12,500.
Step-by-step explanation:
We have been given that a salesperson works 40 hours per week at a job where he has two options for being paid. Option A is an hourly wage of $25. Option B is a commission rate of 8% on weekly sales.
First of all we will find amount earned by salesperson with option A.
\text{Option A earnings}=40\times 25=1000Option A earnings=40×25=1000
The salespersons earns $1000 through option A.
Let x be the amount of weekly sales.
8% of x should be equal to 1000 for salesman to earn the same amount with the two options.
\frac{8}{100}x=1000
100
8
x=1000
0.08 x=10000.08x=1000
x=\frac{1000}{0.08}x=
0.08
1000
x=12500x=12500
Therefore, the salesman needs to make a weekly sales of $12,500 to earn the same amount with two options.
Write in expanded form the 3-digit number that has 5 tens, m units, and 2 more hundreds than units.
Step-by-step explanation:
We know that the number written as sum of the place-values of its digits is called the expanded form of a number.
We know that the number written as sum of the place-values of its digits is called the expanded form of a number.Standard Form
We know that the number written as sum of the place-values of its digits is called the expanded form of a number.Standard FormExpanded Form
We know that the number written as sum of the place-values of its digits is called the expanded form of a number.Standard FormExpanded Form20,37,81,405
We know that the number written as sum of the place-values of its digits is called the expanded form of a number.Standard FormExpanded Form20,37,81,405=
We know that the number written as sum of the place-values of its digits is called the expanded form of a number.Standard FormExpanded Form20,37,81,405=20,00,00,000 + 0 + 30,00,000 + 7,00,000 + 80,000 + 1,000 + 400 + 0 + 5
Answer:
2x100+mx100+5x10+mx1
Step-by-step explanation:
This is correct. TRUST ME!! pls if wrong.
Need help.
plz show steps
Answer:
-4
Step-by-step explanation:
Anu has 9 problems to solve for his
math homework. He has solved 2/3
of the problems already. How
many of his problems has he
solved?
9514 1404 393
Answer:
6
Step-by-step explanation:
2/3 of 9 is ...
(2/3)×9 = 18/3 = 6
Anu has solved 6 of his problems.
m(n+r)=s solve for n. Show two methods.
9514 1404 393
Answer:
n = (s/m) -r n = (s -mr)/mStep-by-step explanation:
1. Undo the operations done to n, in reverse order. Here, n has r added and the sum is multiplied by m. First we divide by m, then we subtract r.
m(n+r) = s . . . given
n +r = s/m . . . divide by m
n = (s/m) -r . . . subtract r
__
2. Eliminate the parentheses, then proceed as above. Subtract the added term, then divide by the coefficient of n.
m(n+r) = s
mn +mr = s . . . eliminate parentheses
mn = s -mr . . . subtract the added term
n = (s -mr)/m . . . divide by the coefficient of n
the question is, "compare the proportional relationships. Which represents the greatest price per pound for walnuts?"
Answer:b
Step-by-step explanation:
A 12 fl. oz. bottle of shampoo costs $1.08 at Costco. A 20 fl. oz. Bottle of the same shampoo costs $2.20 at Wal-Mart. Which store has the better buy?
9514 1404 393
Answer:
Costco
Step-by-step explanation:
2 bottles at Costco give you 24 oz of shampoo for the price of $2.08, which is less than Wal-Mart's price of $2.20 for fewer ounces.
Costco has the better buy.
WILL GIVE BRAINLIEST. Point C is at (-3, -2). After being reflected across the x-axis, what are the coordinates of Point C? (CORRECT IT)
“The new coordinates are (3, -2).”
State the error.
Write the rule.
What is the correct answer?
Answer:
(3,2)
Step-by-step explanation: Because -3 and -2 are negative so when you reflect them the opposite of a negative is positive. So the answer is (3,2) HOPE THAT HELPS.
how much of earth's surface is covered by water,including both salt and fresh water?
Answer:
About 71% of Earth's surface is covered in water.
Step-by-step explanation:
About 97% of Earth's water is salt water.
About 3% of Earth's water is fresh water.
If k(x) = 2x² -3.Vx, then k(9) is
Answer:
159
Step-by-step explanation:
k (9) = (2 * [tex]9^{2}[/tex]) - 3
= (2 * 81) - 3
= 162 - 3
= 159