Answer:
4(7a + 3b) = 28a + 12b
Step-by-step explanation:
The sum of 7a and 3b: 7a + 3b
4 times the sum of 7a and 3b: 4(7a + 3b)
Expanding this out:
4(7a + 3b) = 28a + 12b
A shop sells pairs of trainers for £48 each.
They make a percentage profit of 100% on each pair.
What was the cost of each pair of trainers to the shop?
Answer:
£24
Step-by-step explanation:
100% profit means they sold them for double the price and got back the original price of the product and the original price as profit so -
48 / 2 =£24
I hope this helps :)
please HELP MEEEEEE .A store owner wants to make a candy that sells for $1 per pound.he has 50 lb of sugar candies that cost $1.20 per pound.how many pounds of gummy candies that cost 80 cents per pound should he add.
Answer:
50 pounds
Step-by-step explanation:
we can use the equation 60+80/100x=1(x+50)
we get 80/100 x because the gummy candies are 80 cents or 80/100x
we get 60 from multiplying 1.20$ x 50 = 60
solve:
60+80/100x = x+50
60 = x-80/100x+50
60-50 = 20/100x
10 = 20/100x
x= 10 x 100/20 = 10x5= 50 pounds
Using proportions, it is found that he should add 50 pounds of gummy candies that cost 80 cents per pound.
What is a proportion?A proportion is a fraction of a total amount.
This problem is organized as follows:
There is a total of 50 + x pounds.Of those, 50 cost $1.2 per pound.x cost $0.8 per pound.The selling price is of $1.Hence:
[tex]\frac{50}{50 + x}1.2 + \frac{x}{50+x}0.8 = 1[/tex]
[tex]\frac{60 + 0.8x}{50 + x} = 1[/tex]
[tex]50 + x = 60 + 0.8x[/tex]
[tex]0.2x = 10[/tex]
[tex]x = \frac{10}{0.2}[/tex]
[tex]x = 50[/tex]
He should add 50 pounds of gummy candies that cost 80 cents per pound.
More can be learned about proportions at https://brainly.com/question/24372153
The expression is equivalent to which integer? 2(-57 divided by 3) + 20^2 - 5
Answer:
The answer is 357
Step-by-step explanation:
Boris rented a truck for one day. There was a base fee of $16.95, and there was an additional charge of 89 cents for each mile driven. Boris had to pay $131.76
when he returned the truck. For how many miles did he drive the truck?
Find 3 ratios that are equivalent to the given ratio.
12:15
Answer:
4:5 24:30 36:45
Step-by-step explanation:
Can I get help wit my second question
Solve the equation with a simplified fraction: 1/7 + 3/7 =
Answer:
4/7
Step-by-step explanation:
1 +3 = 4
The denominator stays the same..
if you want a better explanation let me know.
If it snows 3 inches in 6 hours, how many inches will we have after the 36 hours of snowing from this snow storm?
Answer:
6 inches of snow
Step-by-step explanation:
6x6=36
snows 3 inches in 6 hours
i
Answer:
18
Step-by-step explanation:
3 inches for every 6 hours. There are 6 6-hour groups in 36, so to find the inches in 36 hours, we would multiply the 3 inches times the 6 groups of 6-hour increments (aka 3*6). 3*6 = 18, so after 36 hours of snowing, we'd end up with 18 inches of snow.
Given the function, f(x)=10x-3,
what is the value of the function when x=-1/2
A biology class examined some flowers in a local meadow. The students saw 88 perennial
flowers and 12 annual flowers. What percentage of the flowers were perennials?
Answer:
88%
Step-by-step explanation:
HALPPPPDNEISIXJVHRSIZJJHRSUXJGHFEHWHSHCVRHHEHSHXCHFUDJ HAHAHAHAHHAHAAHAHAAHHA LOL
Answer:
&T *OA*&
Step-by-step explanation:
what is the value of 2/4
Answer:
0.5
Step-by-step explanation:
hope this helps
Please help me? I’ll give brainliest
Answer:
left 4 up one because the coordinates are -4 , 1
Answer:
the first one (-4, 1)
Step-by-step explanation:
Expand and simplify the following expressions : 1.(a-5)(a-7)
2.(x-2y)(3x+4)
3.(4x+3y)(4x-3y)
4.(6x-7y)(6x+7y)
Answer:
1. (a-5)(a-7)
a2 - 12a + 35
2. (x-2y)(3x+4)
3x2 +4x - 6xy - 8y
3. (4x+3y)(4x-3y)
16x2 - 9y2
4. (6x-7y)(6x+7y)
36x2 - 49y2
(the twos after the letters means squared)
:)
*WILL MARK BRAINLIEST* 15 POINTS
Match each word to its correct definition:
Answer:
2
3
1
4
Step-by-step explanation:
Angles that add up to 90 are Complementary angles.
Two angles that have a common vertex and a common side but do not overlap are Adjacent angles.
Angles that are opposite each other and have the same measurment are vertical angles.
Angles that add up to 180 are Supplementary angles.
Hope this helps!! :D
What is the measure of
Answer:
2nd one
<qup=180-45=155(linear pair)
Oliver saves 10% of his weekly earnings for living expenses. He usually makes $520 each week. This
week he made 10% more. Oliver incorrectly claims that he has $520 left for spending money this
week. Calculate the amount of spending money Oliver has left for this week. What error did Oliver
likely make?
Oliver has $
left for spending money this week.
Answer: Oliver's living expenses- 520(.1)=$52
Step-by-step explanation:
-3x^3 (3x^4 - 5x^2-4) *
Answer: hanhjc,
Step-by-step explanation: bhjaCH
In a class in which the final course grade depends entirely on the average of four equally weighted 100-point tests, Joyce has scored 90, 93, and 85 on the first three. What range of scores on the fourth test will give Joyce a C for the semester (an average between 70 and 79, inclusive)? Assume that all test scores have a non-negative value.
Express your answer in interval notation.
HELP ASAP BRAINLEST AND THANKS
Answer:
[12,48]
Step-by-step explanation:
We will start by calculating the score she needs to get a 70 in the class
We will let x equal the fourth test
[tex]\frac{90+93+85+x}{4} =70[/tex]
This isn't hard to solve and we will do so by multiplying 4 by both sides and subtracting 268 (90+93+85)
This means that x= 12
We will then use the same formula but set it equal to 79
[tex]\frac{90+93+85+x}{4} =79[/tex]
We solve x in the exact same way and get x=48
our final answer is now [12,48]
PLEASE HELP!!! I NEED TO TURN THI IN SOON !!!
Question and instructions in the image below!!!
Will mark brainliest if correct!!!
Answer:
Im pretty sure its the 3rd one
Step-by-step explanation:
I did this a while ago
What is the value of x?
Answer:
x = 30 degrees
Step-by-step explanation:
Okay so we start by noticing that the two pointed out vertices = 180 degrees. So we have the following equation.
(x + 12) + (3x + 48) = 180
If you combine them you get:
4x + 60 = 180
Subtract 60 from both sides..
4x = 120
Divide both sides by 4..
x = 30
And there's your answer!
If 39 is 10% of an number what is the number? How did you find your answer?
Answer:
390
Step-by-step explanation:
10% = 39
39 x 10 = 390
390 = 100%
Answer:
x=390
Step-by-step explanation:
x of 10% equal to 39
x10/100 = 39
x10 =3900
x = 3900/10
= 390
Over which interval on the x-axis is there a negative
rate of change in the function?
-2 to -1
O -1.5 to 0.5
O to 1
O 0.5 to 1.5
If 3x - 7 = 2, then x equals?
Answer:
rjogir
grggreijgojrejow
g
Step-by-step explanation:
Answer:
3x - 7 = 2
3x = 2 + 7
3x = 9
x =9/3
x = 3
x equals 3
n divide by 1.6=5
Help
Answer:
3.125
Step-by-step explanation:
You take 5 and divide it by 1.6 to get you answer. I hope this helps
5m+22-15n need answer
Answer:5m+22-15n
Step-by-step explanation:
It costs $100 to manufacture and ship to a vendor a large batch of souvenir hats, but each hat that is in the shipment brings in revenue of $5 to the manufacturer. Write a function rule for the amount of money the manufacturer earns from the shipment of x hats.
Answer:
5x - 100
Step-by-step explanation:
Answer:
P(x) = 5x - 100
Step-by-step explanation:
−14.4=−0.6p
I’m bisexual
nice :) good for u, wish i could just say that straight up lol
Help if you would like brainliest
Simplify the following expression. 95 + 5[14 - (3 + 8)] A. 140 B. 190 C. 220 D. 110
Answer:
The answer is D. 110
Step-by-step explanation:
You add 8 and 3 and get 11 first because in parentheses, and then you subtract that by 14, which will give you 3. Then you multiply 3 times 5 to get 15 and add that to 95 to get your answer. Hope this helps!
Answer:
The answer is D. 110
Step-by-step explanation: