Answer:
equation: x(1.25) + 6.75 = 31.75 refills: 20
Step-by-step explanation:
The mug costs $6.75, and you aren't buying multiple cups, so that number stays the same. The number of refills is "x" since we do not know the amount. Next to "x" we multiply 1.25 for the cost of each refill. So now we have "x(1.25)" then we add $6.75 to the equation, for the mug price. Along with the total at the end. To which we now have "x(1.25) + 6.75 = 31.75"
Now we solve the equation. First, subtract 6.75 from each side
x(1.25) + 6.25 = 31.75
-6.25 -6.25
Now we have "x(1.25) = 25" So we have to divide each side by 1.25
x(1.25/1.25) = 25/1.25
x = 20
Therefore, Kim bought 20 refills. To check our work we can replace x with 20 in the original equation.
20(1.25) + 6.75 = 31.75
25 + 6.75 = 31.75
31.75 = 31.75
I'm not the best at explanations, but I hope this helped! :)
Complete the operation. Show steps needed
without a calculator.
a) 3.76 + 0.345
Answer:
4.105000
Step-by-step explanation:
because you have to add up
Select the correct type of solution set for the system
Answer:
no solution
Step-by-step explanation:
Find sin A.
a.
4
sin A = -
3
sin A
b.
4
sin A =
d.
sin A =
Answer:
4/5
sin A = perpendicular/hypotenuse
sinA = 28/35
sinA = 4/5
hope it helps
option B
Answer:
B. Sin A = [tex]\frac{4}{5}[/tex]
Step-by-step explanation:
Sin A = opposite / hypotenuse
Sin A = 28 / 35
Divide both by 7
28 / 7 = 4
35 / 7 = 5
[tex]\frac{28}{35} = \frac{4}{5}[/tex]
If 1 lb = 2 c, then 1 1/2 c = _____ lb
Answer: b=
10.873127c2hn11t
4l
Step-by-step explanation:
Answer:
0.75 lb cause proportions
four swimmers each completed 25 yards of a 100 yard relay in the order that they swam, the swimmers times are given below.
First swimmer in the relay: 13 sec
Seconed swimmer in the relay: 14.273 sec
Third swimmer in the relay: 16.04 sec
Fourth swimmer in the relay: 11.802 sec
Which statment is true
A. The differance between the slowest and the fastest 25-yard times was 5.842.
B. The teams total 100-yard relay time was 55.079 sec.
C. The last two swimmers took a total of 27.842
D. The second swimmer was 2.127 sec fasterbthen the third swimmer
Answer:
C.
Step-by-step explanation:
A. The difference between the slowest and fastest is 4.238 secs
B. The team total is 55.115 secs
C. The last two swimmers took a total of 27.842 (correct)
D. The second swimmer was faster than the third by 1.767 secs
Susan has 50% more books than Michael. Michael has 40 books. If Michael buys 8 more books, will Susan have more or less books than Michael? Use any method to solve the problem
Answer:
Susan has more books than Michael.
Step-by-step explanation:
If Susan has 50% more books and Michael has 40 books, that means Susan has 1.5 times 40 = 60
40 + 8 = 48
60 is more than 48, so Susan has more books than Michael
Solve the system of equations. What is the solution?
10x – 4y = 12
5x + 2y = 14
Answer is 2
Step-by-step explanation:
A survey of 7th grade students found that 18 out of 32 students prefer to buy their lunch at school instead of bring it from home. What percent of students is that? Write your final answer as a percentage.
Answer: 56.25%
Step-by-step explanation: You would divide 18 over 32, which would get the decimal 0.5625. Then you would multiply this by 100/100 which would get 56.25/100. This would get you 56.25%.
If the discriminant is equal to 4, how many solutions are there?
Answer:1 only solution
Step-by-step explanation:
If the discriminant is equal to 4, the number of solutions there are is; 2 solutions.
According to the question;
If the discriminant is equal to 4, how many solutions are there?When the discriminant is a perfect square as in 4 above; Then the solutions to the equation are not only real, but also rational.
However, If the discriminant is positive but not a perfect square, then the solutions to the equation are real but irrational.
There are 2 rational solutions if the discriminant is equal to 4.
Read more:
https://brainly.com/question/23290274
What is the area of this irregular figure knowing that the formula for the area of a rectangle is l x w.
9514 1404 393
Answer:
42 cm²
Step-by-step explanation:
The attachment shows a couple of ways the figure can be considered.
a) Left and Right rectangles that are 5 cm high and 3 cm wide, together with a central rectangle that is 3 cm high and 4 cm wide. Then the total area is ...
5×3 + 3×4 + 5×3 = 15 + 12 + 15 = 42 . . . . cm²
__
b) An enclosing rectangle that is 5 cm high and 10 cm wide with a cut-out that is 2 cm high and 4 cm wide. Then the total area is ...
5×10 -2×4 = 50 -8 = 42 . . . . cm²
__
The area of the irregular figure is 42 cm².
Please help me with this problem!?
Answer:
(-2.5,2)
Step-by-step explanation:
Please ANSWER WILL GIVE BRAINLIEST
I think the answer is for
1 book (x = 1)
1150+25(1)= 1175
For 2 books (x - 2)
1150+25(2) = 1200
Next, to find the change in total cost, subtract these 2 answers:
1200 - 1175 = 25
2. What is the value of f(x)=2/3x+1/4 when x=6
what is the scale factor plz help plzz
Answer:
c
Step-by-step explanation:
I need this quick!
Which equation has no solution?
|4x - 2|= -6
|-2 - x|= 9
|3x + 6|= 6
|-2x + 8|= 0
thanks so much! <3
Answer:
Hope that answers your question. The 3rd function has no solution
I give brainlest, please help.
There’s an option D on the bottom you just can’t see.
Someone please help with this question
Answer:
B. 25
Step-by-step explanation:
30 + 35 + 10 = 75
100 - 75 = 25
Answer:
it's B (25%) players play the woodwinds.
Step-by-step explanation:
35% + 10% + 30%= 75%
100% - 75%= 25%
Help and please make sure it’s right :)
Answer:
dam nvm the dud give out the answers
Answer:
10
Step-by-step explanation:
12x-10+8x-10=180. All horizontal lines equal 180 degrees. 12x+8x=20x. -10-10=-20. 20+180=200 200 diveded by 20 is 10
what is x worth in 8(-6x + 14) = -128
Answer:
5
Step-by-step explanation:
Looking north, two skyscrapers are sighted from the viewing deck of the Empire State Building at 1250 feet up. One skyscraper is sighted at a 20° angle of depression and a second skyscraper is sighted at a 30° angle of depression. How far apart are the two skyscrapers to the nearest foot?
Answer:
Step-by-step explanation:
The angle of depression is the angle between the line of sight and a vertical line.
The distance between the two skyscrapers is 1269ft
I've added as an attachment, a figure that illustrates the scenario
First, we calculate distance AB using the following tangent ratio
[tex]\mathbf{\tan(\theta) = \frac{Opposite}{Adjacent}}[/tex]
So, we have:
[tex]\mathbf{\tan(60) = \frac{AB}{1250}}[/tex]
Make AB the subject
[tex]\mathbf{AB = 1250 \times \tan(60)}[/tex]
Next, we calculate distance AC using the following tangent ratio
[tex]\mathbf{\tan(\theta) = \frac{Opposite}{Adjacent}}[/tex]
So, we have:
[tex]\mathbf{\tan(60+10) = \frac{AB + BC}{1250}}[/tex]
[tex]\mathbf{\tan(70) = \frac{AB + BC}{1250}}[/tex]
Make AB + BC, the subject
[tex]\mathbf{AB + BC = 1250 \times \tan(70)}[/tex]
Make BC the subject
[tex]\mathbf{BC = 1250 \times \tan(70) - AB}[/tex]
Substitute [tex]\mathbf{AB = 1250 \times \tan(60)}[/tex]
[tex]\mathbf{BC = 1250 \times \tan(70) - 1250 \times \tan(60)}[/tex]
[tex]\mathbf{BC = 1269}[/tex]
Hence, the distance between the two skyscrapers is 1269ft
Read more about angles of depression at:
https://brainly.com/question/13697260
help me with all of it if u can
Answer:
Answers: (4. = 3) (5. = 9) (6. = 20)
Classify this expression based on the number of terms: 4a^2+9ab^2-15b^3. A.Monomial B.Binomial C.Trinomial D.Polynomial
Select all the equations that are true. Explain your thinking.
Answer:
A,D,E,
Step-by-step explanation:
A triangle’s base is 3 feet longer than twice its height, h. To create a new triangle, the base is decreased by 4 feet, and the height is increased by 2 feet. Which expression represents the area of the new triangle?
Answer:
area of the triangle =
[tex] \frac{(x - 4) \times (y + 2)}{2} [/tex]
let base be x and height y
hope it helped
PLS mark BRAINLIEST
Answer:
let height be x
base =2x+3
for new
height =x+2
base=2x+3-4=2x-1
area of new triangle=1/2_newbase×height
=1/2 (x+2)(2x-1) is required expression
Mateo buys 5 postcards during each day of vacation. Write an equation that shows the
relationship between the days of vacation x and the number of postcards bought y.
Write your answer as an equation with y first, followed by an equals sign.
Answer:
The answer is y=5x
Step-by-step explanation:
What would the volume be of a box with a width of 2 1/4 inches, length 1 1/2 inches, and height of 4 inches?
Answer: The answer is 13.5
Step-by-step explanation:
I suck at these and I need help here’s the question
You buy ten pizzas and pay with $100 how much change do you receive it the pizzas cost three for $25.50
Answer:
Step-by-step explanation:
3 vegetarian pizzas cost 25.50. First we must find the cost of one vegetarian pizza.
25.5/3 = 8.5.
Each pizza costs $8.50. She bought 10 of them.
Now, we must multiply $8.50 by 10.
8.5x10 = 85.
$85 for all of the pizza.
Finally, subtract 85 from 100.
100-85=15.
You will receive $15 in change.
Answer:
Should be $15 change
Step-by-step explanation:
Since 3 pizzas cost 25.50 you times that by 3. Divide the 25.50 by 3 and add them two together. Take away that from the 100
can play 18 holes of golf in 180 minutes. Calculate what is his average rate in number of minutes per holes?
Solve: 5(3x + 2) -2 = 2 (1 -7x)
Answer:
x=-6/29
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
5(3x+2)−2=2(1−7x)
(5)(3x)+(5)(2)+−2=(2)(1)+(2)(−7x)(Distribute)
15x+10+−2=2+−14x
(15x)+(10+−2)=−14x+2(Combine Like Terms)
15x+8=−14x+2
15x+8=−14x+2
Step 2: Add 14x to both sides.
15x+8+14x=−14x+2+14x
29x+8=2
Step 3: Subtract 8 from both sides.
29x+8−8=2−8
29x=−6
Step 4: Divide both sides by 29.
29x/29=-6/29
x=-6/29
what is the surface area?
Answer:
Hope that answers your question