Answers
Answer:
Step-by-step explanation:
1) Let x be the number of adults and y be the number of students
x + y = 8 --------------(I)
y = 8 -x
7.25x + 5.50y = 52.75 ----------------(II)
Substitute y = 8 -x in equation (II)
7.25x + 5.5*(8 - x) = 52.75
7.25x + 5.5*8 - x*5.5 = 52.75
7.25x + 44 - 5.5x = 52.75
7.25x - 5.5x + 44 = 52.75
1.75x + 44 = 52.75
1.75x = 52.75 - 44
1.75x = 8.75
x = 8.75/1.75
x = 5
Plugin x = 5 in equation 1
y = 8 - 5
y = 3
2) x = y + 24
x + y = 180 {Supplementary}
y + 24 + y = 180
2y + 24 = 180
2y = 180 - 24
2y = 156
y = 156/2
y = 78
x = 78 + 24 = 102
Related Questions
Tiara cell phone company charges $3 for 30 text messages how many text messages can a tiara send per dollar if she paid at a steady rate
Answers
What is the value of x for the point with a y-value of 8?
Answers
Answer:
7
Step-by-step explanation:
Two-fifths times four-fifths equals____
Answers
Answer:
This equals 8/25.
Step-by-step explanation:
Because this is a multiplication problem, just multiply the two fractions. The would be (2*4) / (5*5), or 8/25.
Please help me...this is due it 5 hours
Answers
Answer:
the sides are all 6 cm because it's a quadarlatratal and the perimeter is 24
PLS HELP ASAP, 10 POINTS AND WILL GIVE BRAINLIEST
Consider the quadratic equation below.
-2x2 + 11x + 7 = 10 + 4x
Determine the correct set-up for solving the equation using the quadratic formula.
quadratic equation in the photo along with the answers
Answers
Answer:
X^2
Step-by-step explanation:
does 1+1= window? yes or no?
- Melascula
Answers
Answer:
no
Step-by-step explanation:
Answer:
Hehe tried searching it up lol but yeah
1+1= a lot of things
Step-by-step explanation:
PLZ HELP!!!
Plz answer fast if possible.
Answers
Answer:
For the first one:
yes
constant rate of 4 inches of perimeter/per inch of side length
For the second:
no
not a constant rate
n2+5 n=6
[tex]n2 + 5[/tex]
Answers
Answer:
41
Step-by-step explanation:
Here's your solution
=> The given expression is n^2 + 5
=> The value of n is 6
=> now putting the value of n in above expression
=> (6*6) + 5 = 41
hope it helps
6-(1/3×1/3)+1×8 what is the answer? How to get it??????????
Answers
=6-(1/9)+8
=6/1-1/9+8/1 (change 6 and 8 to fractions)
=6/9-1/9+8/1
=54/9-1/9+8/1
=53/9+8/1
=53/9+8/9
=53/9+72/9
=125/9
Multiply: (3x to the power 4 + 2y to the power 2)(5x to the power 2- y to the power 4)
Answers
Answer:
it is the last one because you are adding the powers but, multiplying the numbers infront the Xs.
What is the mean for this data set?
{29,40,46,6,29,6}
Drag and drop the correct answer into the box.
Answers
Mode- 29,6
Median-29
What is the area of the triangle
Answers
Answer:
40
Step-by-step explanation:
[tex]\frac{1}{2}(LH)[/tex]
.5(10 X 8)
.5 x 80
40 units^2
Answer:
1024
Step-by-step explanation:
8 times 10 times 12.8 = 1024
Solve this equation h + 17 = 40
Thanks!
Answers
Answer:
H= 40-17
H= 53
Therefore, h=23
Answer:
h=23
Step-by-step explanation:
Since h plus 17 is equal to 40, h needs to be a number that adds to 17 to get 40. Therefore, you can subtract 17 from 40 to get 23. If you add it into the equation you get 23+17=40 which is correct.
Name a fraction equivalent to 0.1
Name a percent equivalent to 0.1
Name a fraction equivalent to 75%
Name a decimal equivalent to 75%
Name a decimal equivalent to 1/5
Name a percent equivalent to 1/5
Answers
Answer:
1/10
10%
3/4
0.75
0.2
20%
Step-by-step explanation:
Answer:
1/10
10%
3/4
.75
.20
20%
Step-by-step explanation:
4x - 4 + (-5x + 8 please help
Answers
The length of a rectangle is 13 centimeters less than its width. What are the dimensions of the rectangle if its area is 140 square centimeters?
Answers
Answer:
Dimensions = 7 cm by 20 cm.
Step-by-step explanation:
Let the length and width of the rectangle be L & W respectively.
Given the following data;
Area of rectangle = 140 cm²
L = W - 13
To find the dimensions of the rectangle;
The area of rectangle = L * W
Substituting into the above formula, we have;
140 = L * W
140 = (W - 13) * W
140 = W² - 13W
W² - 13W - 140 = 0
Solving the quadratic equation using factorization method;
Factors are -20 and 7
W² - 20W + 7W - 140 = 0
W(W - 20) + 7(W - 20) = 0
(W - 20)(W + 7) = 0
W - 20 = 0
W = 20
W + 7 = 0
W = -7
Thus, W = 20 or -7
But the width has to be positive, W = 20 centimeters.
Next, to find the length of rectangle
L = W - 13
L = 20 - 13
L = 7 centimeters.
raiz quadrada de 2 ?
Answers
1 2/5 + 3 4/10 what is it!
Answers
Answer:
The Answer would be 4 4/5 simplified.
Step-by-step explanation:
I hope this helps! Have a good day!
Claire purchases a new dress for the prom. The dress is priced $160, but it is on sale for 30% off. Claire’s aunt works at the store and can give her an additional 10% off. If the sales tax is 7.5%, how much does Claire pay for the dress?
a.
$93.24
b.
$103.20
c.
$108.36
d.
$120.40
Answers
Answer:
[tex]Total = \$103.20[/tex]
Step-by-step explanation:
Given
[tex]Amount =\$160[/tex]
[tex]D_1 = 30\%[/tex] --- first discount
[tex]D_2 = 10\%[/tex] --- second discount
[tex]Sales\ Tax = 7.5\%[/tex]
Required
Determine the amount paid
First, we add the total discount:
[tex]D = D_1 + D_2[/tex]
[tex]D = 30\% + 10\%[/tex]
[tex]D = 40\%[/tex]
If she got a discount of 40%, then she paid 60% (i.e. 100% - 40%)
So:
[tex]Amount = 60\% * \$160[/tex]
[tex]Amount = \$96[/tex]
Calculate the sales tax
[tex]Sales\ Tax = 7.5\% * \$96[/tex]
[tex]Sales\ Tax = \$7.2[/tex]
[tex]Total = \$96 + \$7.2[/tex]
[tex]Total = \$103.20[/tex]
2) A landscaping company charges $40 to mow a lawn and $15 per hour to mulch the flower beds. Write an equation to represent the amount paid to the landscaping, A, to mow the lawn and mulch the flower beds for H hours.
5 points
A = 15 + 40H
A = 55H
A = 40 + 15H
A = 15H - 40
Answers
What is (10+2-5)X(6^2÷(8-4)??? PLEASE EXPLAIN YOURSELF
Answers
Answer:
3
Step-by-step explanation:
first you add 10+2 then subtract 5 from the 12. then you multiply 6 and 2 that equals 12. now you minus 8 and 4 that equals 4. now you divide 12 and 4. that equals 3.
What is the relationship between the circumference of a circle and its diameter?
A
diameter is about 3 times the circumference
B
circumference is about 3 times the diameter
B
depends on the circle
D
diameter is half of the circumference
Answers
its a for a +
Step-by-step explanation:
help me i will give 10 points
Answers
Answer:
= 20 square units
Step-by-step explanation:
First we calculate the obvious square without the extra points. The side length of the square is four; therefore, the area of the square is 16 square units. The points are each 1 square unit as they split the squares down the midde. In total, 16 + 4(1) = 20.
if 18 is added to a number m and the sum is divided by 2 the result is 5 times the number find the value of m
Answers
Answer:
Just make the equation and solve. Easy, isn't it?
Step-by-step explanation:
(18+m)/2= 5m
=>18+m= 10m
=>9m=18
=>m=2
hope it helped!
In a game, Janeesa started with 0 points. She then earned 50 points, lost 80 points,
and earned 10 points. Which number line shows Janeesa's ending score in the
game?
Answers
50-80=-30
-30+10=-20
Diego and Jada are both trying to write an expression with fewer terms that is equivalent to
7a+5b−3a+4b
Jada thinks 10a+1b is equivalent to the original expression.
Diego thinks 4a+9b is equivalent to the original expression.
Substitute your own values for “a” and “b” and determine if the expressions are equivalent. Show your work in the space provided.
Answers
Answer:
Diego's answer 4b+9b is correct:)
Step-by-step explanation:
Our first step is to combine like terms.
Causing you to combine 7a and -3a which gives you 4a because 7-3=4
Next, you would combine 5b and 4b which gives you 9b because 5+4=9
After you have combined like terms you would have your simplified equation 4b+9b causing Diego's answer to be correct!
Hope this helps!
Please tell me if I am wrong, I enjoy learning from my mistakaes:)
Have a great rest of your day:)
What is The mass of earth is 5.97 X 10^24 kilogram? Express your answer In scientific notation.
Answers
Answer: 597000000000000000000000000.00
Step-by-step explanation:
Since the exponent of the scientific notation is positive, move the decimal point 24 places to the right.
Tammy has a rectangular rug with an area of 24 square feet. The rug is 2 feet longer than it is wide.
Part A: Which equation does NOT represent the area of the rug?
A. w^2+2w−24=0
B. w(w+2)=24
C. w^2+2w=24
D. w(w+2)^2=24
Part B: Using an appropriate equation from above, solve to determine the rug's width.
A. w = 17 feet
B. w= 4 feet
C. w = 3 feet
D. w = 5.25 feet
Part C: What is the rug's length?
A.L = 14 feet
B. L = 4 feet
C. L = 6 feet
D. L = 3 feet
Answers
Answer:
i believe it is b d c
Step-by-step explanation:
A school club wants to collect at least 500 canned goods for a school food drive. The club has already collected 30 canned goods.
If 10 club members each collect the same number of canned goods, which inequality and graph represent the minimum number of canned goods, n, each club member must collect for the club to meet the goal? (HOW DID YOU GET YOUR ANSWER, PLEASE SHOW ME YOUR WORK!!)
A. 10n+30<500
B. 10n+30≥500
C. 30n+10≤500
D. 30n+10>500
Answers
Answer:
The correct answer is 10n ≥ 470.
Step-by-step explanation:
Since, the school club wants to collect at least 500 canned goods, then we know that they don't want to collect any less: they must collet 500 or more canned goods.
They already collected 30 canned goods, therefore we can subtract this quantity from out goal.
500 - 30 = 470
Since there are 10 club members, the number of members multiplied by "n" the minimum amount of canned goods that they can collect, will equal the total amount of canned goods that they need.
PLS HELP I NEED THIS DONE IN 3 HOURS PLSSSS