Answer:
is this a question?
Step-by-step explanation:
yes it dropped 8°F
In Mrs. Morales' class, the ratio of boys to girls is 3:7. If there are 30 students in her class,how many of
of them are girls?
Answer:
Actually 21 of them are girls.
Step-by-step explanation:
Make a table with 3 and 7 like this
3|7
6|14
9|21
* remember to add together each side every time you multiply to make sure you get 30
What type of transformation do you see in the picture? *
A. Translation
B. Rotation
C. Reflection
D. Dilation
You need a 45% alcohol solution. On hand, you have a 105 mL of a 40% alcohol mixture. You also have 80%
alcohol mixture. How much of the 80% mixture will you need to add to obtain the desired solution?
You will need
mL of the 80% solution
Submit Question
You have 105 mL of a 40% alcohol solution, which contains 0.4 • 105 mL = 42 mL of alcohol.
If you mix it with x mL of 80% solution, you end up with a (105 + x) mL solution that contains (42 + 0.8x) mL of alcohol.
In this solution, you want to have a concentration of 45%, so
((42 + 0.8x) mL) / ((105 + x) mL) = 0.45
Solve for x :
(42 + 0.8x) / (105 + x) = 0.45
(42 + 0.8x) / 0.45 = 105 + x
280/3 + 16/9 x = 105 + x
7/9 x = 35/3
x = 15
So you need 15 mL of the 80% solution.
I need help with these problems, answering and show work. Even answering only one equation is fine.
Answer:
dammmm I well death If a see this
A package of 3 pairs of insulated socks costs $24.87. What is the unit price of the pairs of
socks?
I really need this one!!! Help please ♡︎
Answer:
Each pair of socks equals $8.29.
Step-by-step explanation:
If you divide 24.87 by 3, you get 8.29. So each pair of socks equals $8.29.
solve for x if y = -10 y = 4x - 16
Extimate the sum or difference 9/10 + 7/8 ik im dumb
If the sales tax rate is 7.5% in North Carolina, then how much would you pay in Raleigh for a pair of shoes that cost $40.00?
Answer:
$3
Step-by-step explanation:
40*7.5/100= Your answer
Write 4 more than one third of a number n is 6 as a equation
Answer:
1/3n + 4 = 6
Hope this helped!
What is the product of 3/4 and -6/7
Answer:
- 63/98 (simplified)
Step-by-step explanation:
3/4=21/28
-6/7=-24/28
21/28*-24/28= - 504/784
What are the zeros for the function f(x) 2x^2 + 4x + 8 and how many times does the graph cross the x-axis?
Evaluate -3x 3y 2, if x = -2 and y = -1.
Answer:
6 + -3 + 2 =
5
6 * -3 * 2 =
-36
Step-by-step explanation:
I'm assuming they have plus sings in between, if not I'll evaluate with adding and multiplying.
Plug in the values for x and y.
-3(-2) + 3(-1) + 2
Then solve.
6 + -3 + 2 =
5
6 * -3 * 2 =
-36
Write each percent as a decimal and as a mixed number or fraction in simplest form
1. 120%
2. 0.08%
3. 0.35%
i need help
If (72)^x = 1, what is the value of x? Explain your answer
Answer:
x = 0
Step-by-step explanation:
Any number to the power of 0 is going to equal 1.
Which statement best describes the function?
A. The function is always increasing,
B. The function is never increasing
C. The function is increasing when x 0.
D. The function is increasing when x 0
Answer:
I dont see numbers of a function
Step-by-step explanation:
A pet store has 32 dogs. The owner gives 2 treats to each dog until she has no treats left over. How many treats did she have?
Answer:
64
Step-by-step explanation:
because 32 x 2 = 64
Answer:
32*2=64 She had 64 treats
A Ferris wheel makes a full rotation every 80 seconds After how many seconds will it make a second rotation
What is the slope of the line perpendicular to the line y=-4x+17
Answer:
-4
Step-by-step explanation:
Can i plz have brainliest :)
Translate the sentence into an equation. The sum of 2 times a number and 3 is 9. Use the variable b for the unknown number.
Answer:
Answer: 2b+3 = 7
=================================================
Work Shown:
b = unknown number
2b = 2 times a number
2b+3 = the sum of 2 times a number and 3
2b+3 = 7, since the expression above is set equal to 7
Step-by-step explanation:
The sum of two positive numbers is 28. When the smaller integer is subtracted from four times the larger, the result is 47. Find the two integers
Answer:
15 & 13
Step-by-step explanation:
15 x 4 = 60 - 13 = 47
which expression which expressions are equivalent to 2r + (t + r)
Answer:
2r+(t+r) = (r+t)+2r
Step-by-step explanation:
It is the answer in a different form but still the same you need more info for me to solve it though.
The quanities x and y are proportional Find the constant of proportionality (r) in the equation y= rx
Answer:
r = 10
Step-by-step explanation:
The proportion is given by, y=rx
y = 10x
3*10=30
10*10=100
16*10=160
So, constant of proportionality r is 10
sec θ = -5/2, θ in Quadrant 3
(02.06 LC)
If one pint is the same amount as 2 cups, how many cups are in 6 pints?
Numerical Answers Expected!
Answer for Blank 1:
the answer is 12 because you multiply 6x2 since 1 pint=2 cups, 6 pints would be 2 times the number of pints you are trying to find.
Mr. Charles bought dinner for his family
The dinner cost $46.95.
He left a 15% tip.
If the ratio of purple bikes to red bikes is 8 to 12 and there are a total of 100 bikes, how many of them are red? *A company spent 32% of its annual budget developing a new machine. What fraction of the company's budget was spent developing the new machine?
Answer:
60 red, they spent 8/25 developing the new machine
Step-by-step explanation:
There are 40 purple and 60 red. (8+12=20, 100/20=5. 8*5=40 12*5=60)
percent means per 100, so it is 32/100 which simplifies to 8/25
Please don't respond if you don't know the answer! (It doesn't help at all!)
Tyy!
Answer:
b
Step-by-step explanation:
Answer:
1/5 or D
Step-by-step explanation:
I dont know how to explain this sorry
Hopefully this helps! Let me know if it's right :3
Graph the function f(x)=-3/5X +4
What is f(5)?
Answer:
f(x)= -3x+4
Step-by-step explanation:
so plug in 5 for x then +4 is your y-intercept and then your slope is -3/1 so you go down 3 over 1 from there and so on
1.5pt : B I US
7. The temperature in Athens was 30°F. Five minutes later it
was 20°F. What was the average change in temperature
per minute as an integer?
Least common multiples are most helpful for
A
adding and subtracting fractions
B
B
reducing fractions
с
multiplying and dividing fractions
D
finding the greatest common factor
Answer:
A
Step-by-step explanation:
Least common multiples are most helpful for adding and subtracting fractions because in order to add and subtract fractions you need to find a common denominator. If you want to do that you have to use least common multiples.
