Answer:r = -1
Step-by-step explanation:
8+8r-(3+3r)=0
We add all the numbers together, and all the variables
8r-(3r+3)+8=0
We get rid of parentheses
8r-3r-3+8=0
We add all the numbers together, and all the variables
5r+5=0
We move all terms containing r to the left, all other terms to the right
5r=-5
r=-5/5
r=-1
Hope this helps
Sam and Sara bought the same number of pencils. Sam put ¼ of his pencils in his pencil box and Sara put ½ of her pencils in her pencil box. If sam had put 5 in his box then how many pencils did sara put in her pencil box?
Answer:
10 pencils
Step-by-step explanation:
Given that:
Number of pencils bought by Sam and Sara are the same.
Let the number of pencils bought = x
Sam put 1/4 in his pencil box
Sara put 1/2 in her pencil box
1/4 of Sam's pencil = 5
That is ;
1/4 of x = 5
x /4 = 5
x = 20
Hence, number of pencils Sara put in her box
:
1/2 of 20
1/2 * 20
20/2
= 10
10 pencils
A rectangle has a length of 6 cm and an area of 18 cm square what is the width of the rectangle
Answer:
3
Step-by-step explanation:
It's going to be Lindsay's birthday soon, and her friends Mary, Jacqui, Tadeusz, Opal, and Tony have contributed equal amounts of money to buy her a present. They have $30.00 to spend between them. Write and solve an equation to determine how much they contributed.
This is due in 45 mins please Help!
Giving out 50 points
The equation to determine how each of them contributed is
x= 30/5 = $6.
What is Unitary Method?The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.
For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.
12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.
As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.
This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.
We have,
They have $30.00 to spend between them.
let $x be the amount each contributed.
So, the equation to determine how each of them contributed
x = 30/ 5
x= $6.
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I need help pleaseeee
You join a cycle class. The monthly membership fee is $20 plus the rate per hour spent cycling is $4. What function represents this
scenario?
Answer:
Linear bc the equation of this scenario is y=4x+20
Step-by-step explanation:
100 points if answered right
Which equation can be used to find 40 percent of 25? Start Fraction 25 divided by 1 Over 40 divided by 1 End Fraction = Start Fraction 25 Over 40 End Fraction Start Fraction 100 times 4 Over 40 times 4 End Fraction = Start Fraction 400 Over 16 End Fraction Start Fraction 40 times 4 Over 25 times 4 End Fraction = Start Fraction 160 Over 100 End Fraction Start Fraction 40 divided by 4 Over 100 divided by 4 End Fraction = Start Fraction 10 Over 25 End Fraction
Answer:
a
Step-by-step explanation:
Answer:
The answers that I got that were correct are: B, C, and E
Explanation:
The answer for this problem is 10 when you try to Find the percentage of one number in relation to another with the formula Percentage = (number you want to find the percentage for ÷ total) × 100. Move the decimal point two places to the right to convert from a decimal to a percentage, and two places to the left to convert from a percentage to a decimal.
Brainlist Please!
Mai made $112 for 8 hours of work.
At the same rate, how many hours would she have to work to make $252?
Answer:
18 hours
Step-by-step explanation:
Answer:
The correct answer would be 18 hours
Step-by-step explanation:
18 is correct because if you do $112 divided by 8 hours to get the unit rate of 14 dollars every hour, then do $252 divided by 14 which is the unit rate to equal 18 hours of work.
HAVE A GOOD DAY!
What is the Slope from this equation? y = 0.75x - 5
Answer:
-5
Step-by-step explanation:
hr
Solve for x. Write both solutions, separated by a
comma.
2x2 - x - 10 = 0
Enter the correct answer.
Jamisha is solving the equation 4 ( x − 2 ) = 34 for x . Her work is shown in the table.
Answer:
Step-by-step explanation:
4x -8 = 34
4x = 42
x = 42/4 = 21/2 = 10.5
95 ÷ 4 how many remanders will I have left
Answer:
3 Remainder
Step-by-step explanation:
Answer:
23 remainder 3
Step-by-step explanation:
Joe is traveling from one city to another. He is looking at a map and realizes that 4 cm represents 25 miles.He then used a ruler to measure the distance on the map between two cities that he is traveling. The distance between them is 160 cm. How far, in miles are the two cities apart?
Answer:
The two cities are 1,000 miles apart
Step-by-step explanation:
The key to solving this is in the scale given:
4cm represents 25 miles
4cm = 25 miles
∴ 1 cm = 25 ÷ 4 = 6.25 miles
Measured distance on map = 160cm
1 cm = 6.25 miles
∴ 160 cm = 160 × 6.25 = 1000 miles
∴ The two cities are 1,000 miles apart
5. Find 11% of 460. (1 point)
46
40.6
50.6
56
Answer:
50.6
-I hope this helps have a great day!
3600 stitches in 3 minutes
QUICK PLEASE
Answer:
1200
Step-by-step explanation:
Answer:
1,200 stitches a minute
Step-by-step explanation:
Hope this helps!!
HELP ASAP. The two lines graphed on the grid each represent an equation.
Which ordered pair represents a solution to both equations?
A. (-4,0)
B. (-2,1)
C. (0, -4)
D. (1, -2)
Answer:
B
Step-by-step explanation:
the lines cross at (-2,1)
Albert bought 9 pounds of fish at a grocery store at $5 per pound for salmon and $3 per pound for catfish. He spent a total of $37 on the salmon and catfish. This can be represented using the following system of equations:5s +3c = 37 s + c = 9 How many pounds of salmon did Albert purchase?
Answer:
5 pounds
Step-by-step explanation:
To find that we simply solve the system of equationsSo make c the subject of the formula of equation 2[tex]s+c=9\\c=9-s[/tex] Substitute in equation 1 [tex]5s+3c=37\\5s+3(9-s)=37\\5s+27-3s=37\\5s-3s+27-(27)=37-(27)\\2s=10\\s=5[/tex] so that's 5 pounds of salmonSubtract 9x^2-10x+19x −10x+1 from -2x^2+4x-10−2x +4x−10.
Answer:
11x^2+5x−19
Step-by-step explanation:
Please help and answer
Answer:
A quotient is a result when two numbers are divided
A difference is a result of two numbers being subtracted
A Product is the result of two numbers being multiplied
Step-by-step explanation:
56 divided by 7
8 minus 6
5 times 4
A pig farmer needs 60 square feet to house a sow. The pen is 6.4 ft by 10.5 ft. Will it be large enough? Explain your reasoning
Answer:
Yes!
Step-by-step explanation:
To find the area, multiply the sides.
6.4x10.5+67.2
Then subtract
67.2-60=7.2
There is still 7.2 ft² after the sow.
Yes! 6.4 ft by 10.5 ft. Will be large enough
What is Area of Rectangle?The area of Rectangle is length times of width.
Given,
A pig farmer needs 60 square feet to house a sow.
The pen is 6.4 ft by 10.5 ft.
We need to find the area we get by 6.4 ft and 10.5 ft.
The area of rectangle=Length×Breadth
6.4x10.5
67.2
67.2 is more than 60 which the farmer expected
Then subtract
67.2-60=7.2
There is still 7.2 ft² after the sow
Hence, Yes the pen is 6.4 ft by 10.5 ft is large enough.
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Is 2/7 a proportional expression
9514 1404 393
Answer:
no
Step-by-step explanation:
A proportion is an equation saying two ratios are equal to each other.
One ratio is not a proportion.
___
It would be a proportion if it were said to equal something:
2/7 = peanuts/popcorn . . . is a proportional expression
divide nine by three, then subtract two double the results
Answer:
2
Step-by-step explanation:
hope this helps
Answer:
-3
Step-by-step explanation:
because nine divided by 3 is 3 then subtract 3 which is 0 then subtract 3 again which is -3
Can someone help my sis on these questions? I dont remember how to do these things (part 3)
Answer:
im pretty sure its B becuase Richard owes more
Step-by-step explanation:
is that Florida vertual school? it looks like what i used to do
Find the equation of the line
Answer:
y = 2x - 7
Step-by-step explanation:
The question is asking for slope-intercept form, y = mx + a.
Given:
(1, -5) and (9, 11)
Find the slope (m) between the two points:
m = (y2 - y1) / (x2 - x1)
x1 = 1
x2 = 9
y1 = -5
y2 = 11
m = ( 11 - (-5) )/(9 - 1)
= 16/8
m = 2
y = 2x + a
Use one of the two points to find a (I will use (1, -5)):
-5 = 2(1) + a
-5 = 2 + a
-7 = a
a = -7
y = 2x + (-7)
y = 2x - 7
Will give brainpower if correct PLEASE HELP ME
Answer:
it equals 45
Step-by-step explanation:
martymade 10 kg of dough after working 5 hours. how much dough did her make if he worked 7 hours?
Answer:
14 kg
Step-by-step explanation:
HELP PLEASE I NEED THE ANWSER NOOOOOOW
Answer:
4
Hope this helps
Please help
Solve for x.
Answer:
x = 17
Step-by-step explanation:
Since 2 sides of the triangle are congruent then it is isosceles, so
The 2 base angles are congruent, both 29°, thus
11x - 65 = 180 - (29 + 29) = 180 - 58 = 122 ( add 65 to both sides )
11x = 187 ( divide both sides by 11 )
x = 17
Can someone help with these two questions
Answer:
1. A
2. I cant see answer D
But if it's 36
IT'S CORRECT
Does the graph represent an exponential growth
or an exponential decay function?
Answer:
Ummmm... I'm sorry but there is no graph or equation, so I can't answer this question with them...
Samantha invested $660 into an account that paid 3.5% interest compounded annually. Samantha did not make any additional deposits or withdrawals. What is the total amount of interest paid by this investment at the end of 5 years?
115.5 is the total amount of interest paid by this investment at the end of 5 years
What is Percentage?percentage, a relative value indicating hundredth parts of any quantity.
Given,
Samantha invested $660 into an account that paid 3.5% interest compounded annually.
We need to find total amount of interest paid by this investment at the end of 5 years
A=P(1+rt)
A is final amount
P is principal amount
r is rate of interest
t is time
A=?,P=660,r=3.5%=0.035, t=5
A=660(1+0.035(5))
=660(1+0.175)
=660(1.175)
A=775.5
To check the total amount of interest paid by this investment at the end of 5 years
We need to find difference between initial amount and final amount
775.5-660
115.5
Hence 115.5 is the total amount of interest paid by this investment at the end of 5 years
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What’s the slope of the line?
Answer: 2
Step-by-step explanation:
[tex]\frac{rise}{run} = \frac{2}{1}[/tex]
