Answer:
46 minutes
Step-by-step explanation:
Sorry about not answering your question sooner, but here is your answer:
In order to get the answer, we have to subtract the original amount of money on the phone card by the amount left ver after the call:
15 - 6.72 = 8.28
Then, we divide this number by 0.18:
8.28 / 0.18 = 46
So, Tammy's call lasted 46 minutes
Hope this helps :)
un bulto de frijol contiene 50 kilogramos, Si se reparten una 1/5 a cada persona de un total de 5 ¿Cuántos kilogramos le corresponde a cada uno?
lo necesito para hoy porfa
Write an equation in slope-intercept form for the line that has a slope of -1/3 and passes through (-6,1)
Answer:
Step-by-step explanation:
The _____ is used to compare values that are proportional.
The Proportionality Constant is used to compare values that are proportional.
What is the meaning of Proportionality ?When two variables are proportional to each other , change in one cause the change in the other .
There are two types of proportion, Direct and Indirect.
When on increasing one variable the other increases and vice versa it is called direct proportion .
When on increasing one variable the other decreases and vice versa it is called indirect proportion .
In the given question
The _____ is used to compare values that are proportional.
The Proportionality Constant is used to compare values that are proportional.
suppose
a ∝ b
a = kb
here k is the Proportionality Constant and is used to compare the values.
To know more about Proportionality
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Kiran is spending $12 on games and rides at another carnival, where a game costs $0.25 and a ride costs $1.
Write an equation to represent the relationship between the dollar amount Kiran is spending and the number of games, x, and the number of rides, y, he could play/ride. (Note: He is spending all of his money on some unknown combination of games and rides)
Answer:
0.25x + y = 12
Step-by-step explanation:
I am hoping that these steps will be self-explanatory, as I am not quite sure how to explain writing an equation:
0.25x + y = 12
Hope this helps :)
A small school bus contains 8 first-graders and 10 second-graders. If two children are ill, what is the probability that at least one of them is a first-grader?
Answer:
2/18
Step-by-step explanation:
In 2016, the cost of 2 ounces of pure gold was $2,640. Complete the double number line to show the cost for 1, 3, and 4 ounces of gold.
Answer:
1 would be 1320
3 would be 3960
4 would be 5280
Step-by-step explanation:
The cost of 1, 3 and 4 ounces of gold in 2016 was $1,320, $3,960 and $5,280 respectively.
Cost of 2 ounces of gold in 2016 = $2,640
Cost of 1 ounce of gold in 2016 = Cost of 2 ounces of gold in 2016 ÷ 2
= $2,640 ÷ 2
= $1,320
Cost of 3 ounces of gold in 2016 = Cost of 1 ounce of gold in 2016 × 3
= $1,320 × 3
= $3,960
Cost of 4 ounces of gold in 2016 = Cost of 1 ounce of gold in 2016 × 4
= $1320 × 4
= $5,280
Therefore, the cost of 1, 3 and 4 ounces of gold in 2016 are $1,320, $3,960 and $5,280 respectively.
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How old is Katie if her mother is 3 times as old as her, but was 4 times older than her 4 years ago?
A. 12 years old
B. 8 years old
C. 36 years old
D. 32 years old
Answer:
32
Step-by-step explanation:
How do you change -3 in x^-3 to be positive?
Answer:
x^-3=1/x^3
This is how we do it.
Answer:
Take the reciprocal. 1/x^3
Step-by-step explanation:
When you take the reciprocal of a number or a variable, the exponent changes sign.
I don’t know how to do thos
what is y when the equation is x^2 - 3xy -4y^2 =0
Answer:
y = 1/8 (5 sqrt(x^2) - 3 x) or y = 1/8 (-3 x - 5 sqrt(x^2))
Step-by-step explanation:
Solve for y:
-4 y^2 - 3 x y + x^2 = 0
Hint: | Multiply both sides by a term to make the coefficient of y^2 positive.
Multiply both sides by -1:
4 y^2 + 3 x y - x^2 = 0
Hint: | Using the quadratic formula, solve for y.
y = (-3 x ± 5 sqrt(x^2))/8:
Answer: y = 1/8 (5 sqrt(x^2) - 3 x) or y = 1/8 (-3 x - 5 sqrt(x^2))
Helppppppp pleaseeeeee
Answer:
this is an unavailable questio. this means the question is being asked wrong. speak to a teacher about this equation.
Step-by-step explanation:
PLEASE HELP!50 POINTS! Brainiest if you know how to do it. I will report you if you're just guessing or very wrong. How do I find the least common denominator in these?
Which of the following is the least common denominator for w-5/w-7 and w+8/3w?
A. 3w (w − 7)
B. w (w − 7)
C. 3w − 7
D. 3(w + 7)
Answer:
A) 3w(w-7)
Step-by-step explanation:
[tex]\frac{w-5}{w-7} and \frac{w+8}{3w}[/tex]
w-7 is a binomial, and 3w is a monomial. Because you cannot put one denominator into the other or multiply both denominators by a number when you have this type of difference where multiplying by a number won't get you the same result, you must multiply them each other.
Therefore:
3w(w-7) would be your LCD.
Answer:
A. 3w (w − 7)Step-by-step explanation:
GivenFractions
(w- 5)/(w-7) and (w + 8)/3wTo findCommon denominatorSolutionWe observe that the fractions can't be simplified any more and they are in the simplest form
Next, the denominators w - 7 and 3w don't have common factors
Therefore the common denominator is the product of denominators:
3w(w - 7)Correct option is A
9. The amount of money Allen earns varies directly with the amount of time he works. He earns
$19 for working 2 hours. How much can Allen earn if he works 5 hours?
Step-by-step explanation:
you must do by unitary methods, first find smaller quantity and then multiply with remaining one.
which one is the unit of force
A.Joules
B. Newton
C. Celsius
D. Kelvin
Answer:
Newtons
Step-by-step explanation:
Joules measure electrical power and celcius and Kelvin measures temperature.
If f(x) = x^2 – 2x and g(x) = 6x + 4, for which value of x does (f + g)(x)=0?
A.-4
B.-2
C. 2
D. 4
Is d=(10)+(-20) d=10)(5 d=(-35)+(
Answer:
d=7
Step-by-step explanation:
Tell me two(2) things you know about the pink line?
Answer:
it's pink in colour
it's a line
it is a linear line and it has a negative value as the line is decreasing from left to right.
Find the inverse function of
y =x-5/6
[tex]f(x) = y = x - \frac{5}{6} \\ [/tex]
Subtract the sides of the equation plus 5/6
[tex]y + \frac{5}{6} = x \\ [/tex]
So ;
[tex] {f}^{ - 1}(x) = x + \frac{5}{6} \\ [/tex]
_________________________________
And we're done.
Thanks for watching buddy good luck.
♥️♥️♥️♥️♥️
Between which two consecutive whole numbers does 17 lie?
Why in the world did I have nearly 800 points worth of questions deleted? Every single one of them were right! What do I do now?
Answer:
read your username :)
Step-by-step explanation:
HELP NEEDED!!!!
Liliana and Marcus are playing a word game. Liliana spells a word incorrectly and loses 18 points. Then Marcus spells a word correctly and has the opposite score. Which is the correct way to represent "the opposite of Liliana's score is equal to Marcus's score"?
A)-18 = 18
B)-(-18) =-18
C)-(18)=-18
D)-(-18)=18
(the answer is not C)
Answer:
D
Step-by-step explanation:
Wkx2di2jd1nd1do jf2kd2ifj2dkdu2dj2d
Answer:
d
Step-by-step explanation:
Your friend states that he has quarters and dimes in his pocket that total to $5.00. He
also states that there are 6 more quarters than dimes. If there are 26 coins altogether,
how many quarters and dimes are there?
Need help!!
Answer: There are 16 quarters and 10 dimes.
Step-by-step explanation:
Let x = Number of quarters
y= Number of dimes.
As per given,
x+y = 26 (i)
x= y+6 (ii), substitute this in (i), we get
y+6+y= 26
⇒2y+6=26
⇒ 2y = 26-6=20
⇒ 2y =20
⇒ y =10 [Divide both sides by 2]
Put this in (ii), x= 10+6 =16
So there are 16 quarters and 10 dimes such that 16 (0.25)+10(0.10)= $5 .
select all ordered pairs that satisfy the function of y=2/3x+1.
(-3,-1)
(6,4)
(-6,3)
(3,3)
Answer:
A.
Step-by-step explanation:
Plugging in all the values into the equation, only A holds a true statement.
What is the value of x in the equation 1/5x— 2/3y=30 when y = 15
Answer:
The answer to your question is x=200
Step-by-step explanation:
1/5x-10+10=30+10(add 10 both sides)
1/5x=40
x=200
PLZ HELP!!
The function c(x) = 2.5x + 15 shows the cost, in dollars, to make x necklaces.
What is c(10)?
What is c(15)?
What is the best interpretation of c(20) = 65 in terms of the problem?
Answer:
c(10)=40
c(15)=52.5
Step-by-step explanation:
c(10) means you plug 10 into your x same with (c15) you plug in 15 so for c(10) it would be 2.5(10) + 15 which is 40
The value of c(10) and c(15) is 40 and 65 respectively.
The given function is c(x) = 2.5x + 15.
What is the function?A function is defined as a relation between a set of inputs having one output each. In simple words, a function is a relationship between inputs where each input is related to exactly one output. Every function has a domain and codomain or range. A function is generally denoted by f(x) where x is the input.
Now, c(10)=2.5(10)+15=40
c(15)=2.5(15)+15=52.5
Given c(20) = 65
So, 65=2.5x+15
⇒50=2.5x
⇒x=20
Therefore, the value of c(10) and c(15) is 40 and 65 respectively.
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the lines represented by the equations 25y-10x=200 and 5y+2x=40 are
Answer:
The slope
Step-by-step explanation:
Mariane buys 16 bags of potting soil for her father that comes in 3/4 pound bags. Part 1 How many pounds of potting soil does Marianne buy? Use the drop downs to put the correct number into the box to complete the statement. If Marianne's father calls and says he needs 15 pounds of potting soil, how many additional bags should she buy? Use the drop downs to put the correct number into the box to complete the statement.
Answer:
Additional bags required = 4
Step-by-step explanation:
Marianne buys number of bags of potting soil = 16
Each bag weighs = [tex]\frac{3}{4}[/tex] pounds
Total weight of 16 soil bags = [tex]16\times \frac{3}{4}=12[/tex] pounds
If Marianne's father requires potting soil = 15 pounds
Amount of additional soil he will require = 15 - 12
= 3 pounds
Therefore, number of additional soil bags required = [tex]\frac{\text{Weight of soil required}}{\text{Soil in each bag}}[/tex]
= [tex]\frac{3}{\frac{3}{4}}[/tex]
= [tex]3\times \frac{4}{3}[/tex]
= 4 bags
Additional bags required by Marianne= 4
******Absolute Value******
l-7al=28
Answer:
a = 4
Step-by-step explanation:
28/ 7 = 4
l7al= 28
7x4 = 28
Absolute Value: the magnitude of a real number without regard to its sign.
plz mark brainliest
Answer:
a=-4
Step-by-step explanation:
-7a=28
7a/7=-28/7
a=-4
If tan(x)=3/5 and sin(x)>0, what is sin(2x)?
With STEPS PLEASE AND NO TROLLING.
i edited the answer. hope it helps. if it isn't ryt tell me plz
Answer:
sin2x = [tex]\frac{30}{34}[/tex]
Step-by-step explanation:
Given
tanx = [tex]\frac{3}{5}[/tex] = [tex]\frac{opposite}{adjacent}[/tex]
This is a right triangle with legs 3 and 5
Let the hypotenuse be h , then using Pythagoras' identity
h² = 3² + 5² = 9 + 25 = 34 ( take the square root of both sides )
h = [tex]\sqrt{34}[/tex]
Thus
sinx = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{3}{\sqrt{34} }[/tex]
cosx = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{5}{\sqrt{34} }[/tex]
Hence
sin2x = 2sinxcosx = 2 × [tex]\frac{3}{\sqrt{34} }[/tex] × [tex]\frac{5}{\sqrt{34} }[/tex] = [tex]\frac{2(3)(5)}{\sqrt{34}(\sqrt{34}) }[/tex] = [tex]\frac{30}{34}[/tex]
Simplify rational expression
16 – 4y?
3y2 – 12y + 12
8 + 4y
3y – 6
Which values of y make the expression undefined?
Answer: 8+4y/3y-6. Answer to what makes expression undefined: y=2
Step-by-step explanation:
I apologize for no work but that is what the answers are