Answer:
Grace's brother has $47.
Aldrine is buying coffee for his coworkers. He orders small and large coffees. Small coffees
cost $3 and large coffees cost $5. He spent $30 and ordered eight cups of coffee in total.
Write a system of equations that represents the situation
How many of each coffee did he buy? How do you know?
Let small cups = S
Large cups = L
They bought a total of 8 cups, so S + L = 8
Rewrite as S = 8-L (1st equation)
Then you also have
$3S + $5L = $30 (2nd equation)
Replace the S in the second equation with the first equation:
$3(8-L) + $5L = $30
Simplify:
24 - 3L + 5L = 30
Combine like terms:
24+2L = 30
Subtract 24 from both sides:
2L = 6
Divide both sides by 2:
L = 3
They bought 3 large cups
Since they bought a total of 8 cups, that means they bought 5 small cups ( 8-3=5)
Large = 3 cups, Small = 5 cups
Simplify 2y-6x+5+4y
What is the answer?
Answer:
Answer = −6x+6y+5
ASAP Analyze the Error: What is the error in the way the calculation of the slope of the two points is set up and/or solved? Please be specific.
Answer/Step-by-step explanation:
Given two points on a line, (-4, 10) and (0, 2), the slope of the line is calculated as follows:
[tex] slope (m) = \frac{y_2 - y_1}{x_2 - x_1} [/tex]
Let,
[tex] (-4, 10) = (x_1, y_1) [/tex]
[tex] (0, 2) = (x_2, y_2) [/tex]
Plug in the values
[tex] slope (m) = \frac{2 - 10}{0 - (-4)} [/tex]
[tex] slope (m) = \frac{-8}{4} = -2 [/tex]
Slope = -2
The wrong formula was used. Slope is supposed to be change in y over change in x. Rather the difference of each coordinates was solved and divided by each other, which makes the whole calculation wrong.
Are y=-9 and y=-9x parallel perpendicular or neither? Explain your answer in one sentence.
Answer:
y=−3
Step-by-step explanation:
STOP PUTTING WRONG ANSWERS
Answer:
why did you put this as a question? you seriously could have just saved some points and commented it on a question you know
Step-by-step explanation:
( do not answer if you do not know, I need urgent, I will report if answer is wrong and I will give brainiest )
How much vanilla extract will be needed to make 2 frozen cookies? Show your work.
If you only want to make 9 cookies ( 0.75 of a dozen ) how much quick cooking oats do you need?
How many cups of flour would you need to make 3 dozen cookies?
Answer:
2 teaspoons for the two frozen cookies
3/4 a cup for the cooking oats
2 cups for the flour
Step-by-step explanation:
First Question
The recipe makes 18 cookies. Divide the cookies by 9, half of the batch, to get 2. Now all you have to do is devide the amount of vanilla extract by 9, it will give you two teaspoons.
Second Question1 and 1/2 devided by two since you're devidng the recpie by two to get 9 cookies. A cup is four so 3/4 plus 3/4 equals 6/4. Simplified it'd be 1 and 1/2 or 1 and 2/4.
Third QuestionThe recipe already calls for 1 and 1/2 a dozen. All you're doing is multiplying the recipe b two to get 3 dozen cookies. Now focusing our attention to the flour, there is 1 cup for 1 and 1/2. Multiply 1 by 2 since there is already half of the recipe here. 1 and 1/2 + 1 and 1/2 is 3 so there'd be 2 cups. Basically just double the recipe.
Answer:
3/4 but if its in decimal form then 0.75
Step-by-step explanation:
At a grocery store you can purchase loose lemons at 2 for $0.99. You can also buy a bag of 6 lemons for $2.50. Which is the better buy? Be sure to show the unit cost for each
Answer:
Bag of lemon
Step-by-step explanation:
Given that:
Cost of loose lemon = $0.99 for 2
Cost of bag of lemon = $2.50 for 6
Calculating the cost per 1 for loose and bag of lemon (unit cost) ;
Loose lemon :
$0.99 /2 = $0.495
Bagged lemon :
$2.50 / 6 = $0.4167
Hence, since the unit cost of bagged lemon is lesser than loose lemon, then purchasing a bag of lemon is better
Object A has 50 kg while Object B has 75 kg. They were pushed with the same amount of force. Which will have greater acceleration
Answer:
Object A will have greater acceleration.
Step-by-step explanation:
Given that,
The mass of object A = 50 kg
The mass of object B = 75 kg
They were pushed with the same amount of force.
We know that, the force acting on an object is given by :
F = ma
Here F is same for both mass
[tex]m_1a_1=m_2a_2[/tex]
Mass and acceleration have inverse relation. It means the object whose mass is less will have greater acceleration. Hence, the acceleration is greater for object A.
Explain how to find rate of change from a table.
11. Find the sum of all prime numbers between 50
and 60.
A. 109
B. 110 -0. 112 D. 122
Answer:
[tex]C.112[/tex]
Step-by-step explanation:
[tex]First,\\Lets\ list\ out\ all\ the\ primes\ between\ 50\ and\ 60:\\53,59\\Hence,\\By\ adding\ them\ we\ get:\\53+59\\=112[/tex]
(6 x 10^2)\(3x10^-5)
the answer is 2 x 10^7 :D
quack quack quack (hopefully this helps)
Answer: 20,000,000 or 2 × 10^7
Step-by-step explanation:
(6 × 10²) ÷ (3 × 10^-5)
(6 × 100) ÷ (3 × 0.00001
)
600 ÷ 0.00003
20,000,000
or
2 × 10^7
Hope this helped!
⚠️HELP⚠️MY HW IS DUE IN 10 MINS
A water tank is being filled with water. Before water is pumped in, the water level in the tank is 11 inches high. After 20 minutes, the water level is 56 inches high.
If "t" represents the time in minutes, and "h" represents the water level, which of the following equations can be used to model this situation?
A. h=2.25t + 11
B. h=2.25t - 11
C. h=11t + 2.25
D. h=45 + 11t
Answer:
Step-by-step explanation:
so coz there was already 11 inches but after 20min the tank is 56inch so wht u do is this
45+11t if im right
Can anyone please help me with this attachment?
If you can't read my writing, this is the questions:
'Calculate the perimeter of this sector.
Give your answer in terms of pi.'
Answer:
Perimeter of the sector = (36 + 8π) cm.
Step-by-step explanation:
Formula to find the of an arc of the circle is,
Length of the arc = [tex]\frac{\theta}{360}(2\pi r)[/tex]
Here, θ = central angle formed by the arc
r = radius of the circle
Therefore, length of the arc given in the picture = [tex]\frac{80}{360}(2\pi) (18)[/tex]
= 8π cm
Perimeter of the sector = Sum of all sides of the sector
= Length of radius + length of the arc + length of radius
= 18 + 8π + 18
= (36 + 8π) cm
Perimeter of the sector is (36 + 8π) cm.
HELP WILL MARK BRAINLIEST PLEASE ANSWER ALL THREE
Step-by-step explanation:
8. ∠COB and ∠AOD are vertical angles or C
9. Vertical angles are equivalent to each other so 4x-16 = 112°
4x - 16 = 112°
4x - 16 + 16 = 112 + 16
4x = 128
4x/4 = 128/4
x= 32° or D
10. ∠AOC is vertical to ∠DOB therefore the 2 angles are congruent
You can do 360 - (112 + 112) = 2AOC
360 - 224 = 2AOC
136 = 2AOC
AOC = 68°or A
OR
You could just do 180 -112
Since ∠AOD and ∠AOC are supplementary angles, they both add up to 180°
We already know the measure of ∠AOD, it's 112°
So all you would need to do is subtract 112 from 180
And you get 68° or A
I REALLY hope this helps!!!
13 A scout group has a raffle to raise money for charity,
There is I prize to be won in the raffle.
Laura buys 12 raffle tickets.
A total of 350 raffle tickets are sold.
Find the probability that Laura does not win the prize.
(Total for Question 13 is 2 marks)
Answer:
29%
Step-by-step explanation:
The probability that Laura does not win the prize is 0.9657
What is Probability?
The probability that an event will occur is measured by the ratio of favorable examples to the total number of situations possible
The value of probability lies between 0 and 1
Given data ,
Let the probability that Laura wins be = P ( x )
So , the probability that Laura does not win is = 1 - P ( x )
Let the total number of raffle tickets to be sold is = 350 raffle tickets
The number of tickets Laura bought = 12 raffle tickets
Therefore , the probability that Laura wins the prize =
number of tickets Laura bought / total number of raffle tickets
The probability that Laura wins the prize P ( x ) = ( 12/350 )
Now ,
The probability that Laura does not win is = 1 - P ( x )
The probability that Laura does not win = 1 - ( 12/350 )
The probability that Laura does not win = ( 350 - 12 ) / 350
The probability that Laura does not win = 338 / 350
The probability that Laura does not win = 0.9657
Hence , The probability that Laura does not win the prize is 0.9657
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1,5,25,61.....
What's following number?
Given:
1,5,25,61.....
To find:
The following number.
Solution:
We can see a pattern in the given sequence.
[tex](-1)^2+(0)^2=1+0=1[/tex]
[tex](1)^2+(2)^2=1+4=5[/tex]
[tex](3)^2+(4)^2=9+16=25[/tex]
[tex](5)^2+(6)^2=25+36=61[/tex]
Using this pattern the next term is the sum of squares of 7 and 8.
[tex](7)^2+(8)^2=49+64=113[/tex]
Therefore, the next number is 113.
Solve the compound inequality: n+1<=-3 or -4n<-8
Answer:
-4n<-8 the answer for this is (n>2)
n+1<=-3 the answer for this is (n<=-4)
The value of n is less than equal to negative 4 and greater than 2. n ≤ –4 and n > 2.
What is inequality?Inequality is defined as an equation that does not contain an equal sign. Inequality is a term that describes a statement's relative size and can be used to compare these two claims.
The inequalities are given below.
n + 1 ≤ –3 …1
–4n < –8 …2
On solving equation 1, we have
n + 1 ≤ –3
n ≤ –4
On solving equation 2, we have
–4n < –8
n > 2
More about the inequality link is given below.
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If point A(4, -10) is translated to A'(2 ,-4), what was the translation? Please represent algebraically
Answer:
b
Step-by-step explanation:
Answer:
A translation by 2 units to the left and 6 units up.
Step-by-step explanation:
Help me quickly just give the answer
Answer: your answer might be 2
HOPE THIS HELPS IF NOT THEN SORRY
Twenty less than a number is at least 15
Answer:
what??
Step-by-step explanation:
Answer:
n - 20 ≥ 15
n ≥ 35
Step-by-step explanation:
a number could be greater than or equal to 35 and be a solution
Find the slope of the line that passes through the two points below.
(3,6) and (10,4)
Answer:
Slope: -2/7
Step-by-step explanation:
Slope is change in y over change in x.
(4-6)/(10-3)
= -2/7
what s the domain for d(x)=850(0.94)x
Given:
The function is
[tex]d(x)=850(0.94)^x[/tex]
To find:
The domain of the function.
Solution:
Domain is the set of input values.
We have,
[tex]d(x)=850(0.94)^x[/tex]
It is an exponential function, with initial value 850 and decay factor 0.94 because 0.94<1.
The exponential functions are defined for all real values of x. So, the domain of exponential function is always the set of all real numbers.
Therefore, the domain of the function d(x) is the set of all real numbers, i.e., R.
Sarah took the advertising department from her company on a round trip to meet with a potential client. Including Sarah, a total of 10 people took the trip. She was able to purchase coach tickets for $320 and first-class tickets for $960. She used her total budget for airfare for the trip, which was $4480. How many first-class tickets did she buy? How many coach tickets did she buy?
Answer:
she bought 8 coach, 2 first-class
Step-by-step explanation:
let x = number of coach tickets
equation I used: 320x + 960(10 - x) = 4480
320x + 9600 - 960x = 4480
-640x = -5120
x = 8
For the expression StartFraction 15 x cubed + 25 x squared + 5 x + 2 Over (5 x squared + 1) squared EndFraction, which sum represents the correct form of the partial fraction decomposition?
Answer:
StartFraction 15 x cubed + 25 x squared + 5 x + 2 Over (5 x squared + 1) squared EndFraction, can be written in mathematical form as
Let y = [tex]\frac{15 x^3 + 25x^2 +5x+2}{({5x^2+1})^2}[/tex]
on expanding [tex]{({5x^2+1})^2 = 25x^4 +1 + 10x^2[/tex]
⇒ y = [tex]\frac{15 x^3 + 25x^2 +5x+2}{25x^4 +1 + 10x^2}[/tex]
there correct form of partial fraction is [tex]\frac{15 x^3 + 25x^2 +5x+2}{25x^4 +1 + 10x^2}[/tex]
Answer:
Option-B
Step-by-step explanation:
edge
John is 5 years older than Samantha and Samantha is twice as old as Tim. If the
sum of their ages is 95, how old is John?
The age of John is 41 years.
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;
John is 5 years older than Samantha and Samantha is twice as old as Tim.
And, The sum of their ages is 95.
Now,
Let the age of Tim = x
Then, Age of Samantha = 2x
And, Age of John = 2x + 5
Since, The sum of their ages is 95.
So, We can formulate;
⇒ x + 2x + (2x + 5) = 95
⇒ 5x + 5 = 95
Subtract 5 both side, we get;
⇒ 5x + 5 - 5 = 95 - 5
⇒ 5x = 90
Divide by 5, we get;
⇒ x = 18
Thus, The age of John = 2x + 5
= 2 × 18 + 5
= 36 + 5
= 41
Therefore, The age of John is 41 years.
Learn more about the expression visit:
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Solve for the variable c in this equation:
3a(b+c)=d
A) c= d-3ab/3a
B) c=d+3ab/3a
C) c=d-3b/3a
D) c=d+3b/3a
Answer:
if it's me I would pick etherbc are d I holp it helps
Help with this please. I’d appreciate if you showed the steps and the answer. Thanks a lot!
[tex]\boxed{\boxed{\pink{\bf \leadsto Hence \ the \ horizontal \ distance \ is \ 11.47 \ feet . }}}[/tex]
Step-by-step explanation:Given that Scott is using a 12 foot ramp . And the height of the truck is 3.5 feet from the ground. And we need to find the horizontal distance of the ramp reaches the ground of the truck .
Here will be a formation of a right angled triangle in which the
Ramp will be hypontenuse.Height will be perpendicular .Base distance will be base .On using Pythagoras Theorem ,
[tex]\red{\bf \implies base^2+perpndicular^2=hypontenuse^2}\\\\\bf\implies (12 ft )^2 = base^2 + (3.5 ft )^2\\\\\bf\implies 144ft^2 = base^2+12.25 ft^2 \\\\\bf\implies base^2 = 144ft^2-12.25ft^2 \\\\\bf\implies base^2 = 131.75 ft^2\\\\\bf\implies base=\sqrt{131.75ft^2}\\\\\bf\implies\boxed{\red{\bf base = 11.47 ft }}[/tex]
★ Hence the horizontal distance is 11.47 feet .The radius of a circle is 3 millimeters. What is the circle's area? Use 3.14 for .
Answer:
Area =9π
Step-by-step explanation:
A=π times r^2
Substitite 3 in for r and get 3^2=9 then multiply by π to get 9π as your answer
BRAINLIEST IF U ANSWER!!! BTW I WILL BE CHECKING IF THE ANSWER IS CORRECT ONLY IF ITS CORRECT BRIANLIEST ANSWER WITHIN 30 MINS!!! The value of a baseball player's rookie card began to increase once the player retired. When he retired in 2000 his card was worth $4.23 The value has increased by $2.92 each year since then. Express the relationship relating the value of the card y in dollars and the number of years x the player has been in retirement with an equation. Is the relationship between x and y proportional? What was the value of the card in 2010 ?
Answer:
Relationship: [tex]y =2.92x+4.23[/tex]
They are not proportional
The value is $33.43
Step-by-step explanation:
Given:
[tex]x = years[/tex]
[tex]y = amount[/tex]
When he retired, the expression is:
[tex](x_1,y_1) = (0,4.23)[/tex]
and the rate (m) is:
[tex]m = 2.92[/tex]
Solving (a): The relationship between y and x
This can be solved using the following point-slope formula:
[tex]y - y_1=m(x-x_1)[/tex]
Substitute values for x1, y1 and m
[tex]y - 4.23=2.92(x-0)[/tex]
[tex]y - 4.23=2.92(x)[/tex]
Make y the subject
[tex]y =2.92(x)+4.23[/tex]
[tex]y =2.92x+4.23[/tex]
Solving (b): Are they proportional?
No, they are not
A proportional relationship is expressed as:
[tex]y = mx[/tex]
By comparing this to [tex]y =2.92x+4.23[/tex]; they have different format
Solving (c): Value in 2010?
First, we determine the value of x in 2010
2000; x = 0
2001; x = 1
---
--
-
2010; x = 10
Substitute 10 for x in [tex]y =2.92x+4.23[/tex]
[tex]y = 2.92*10+4.23[/tex]
[tex]y = 29.2+4.23[/tex]
[tex]y = 33.43[/tex]
A population of rabbits is tripling every week. If the population starts with 5 rabbits, how many rabbits will there be at the end of 7 weeks?
Answer:
10,935 bunnies at the end of 7 weeks
Step-by-step explanation:
5 x 3 = 15
^ x 3 = 45
^ x 3 = 135
^ x 3 = 405
^ x 3 = 1,215
^ x 3 = 3,645
^ x 3 = 10,935
I may be way off, forgive me, but I hope this helps anyway, have a good day!!