Answer:
21b + 9
Step-by-step explanation:
7b(2 + 7b) + (7b + 7)
7b+7b+7b=21b
2+7=9
21b + 9
Forty Percent of the thirty students in the class are boys. How many girls are in the class? PLEASE EXPLAIN!!!
Answer:
18
Step-by-step explanation:
If forty percent of the class is boys, then sixty percent of the class is girls. So that means you must multiply .6 by 30 which will give you your answer of 18. .6 is a decimal form of 60%
The number of girls in the class is 60% or 18 girls
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the total number of girls in the class be = G
Now , let the total number of boys in the class be = B
The total number of students in the class = S
The value of S = 30 students
The percentage of boys in the class = 40 %
So , the equation will be
The number of boys in the class = percentage of boys in the class x total number of students in the class
Substituting the values in the equation , we get
The number of boys in the class = ( 40/100 ) x 30
The number of boys in the class = 30 x 0.4
The number of boys in the class = 12 boys
So , the number of girls in the class = total number of students in the class - number of boys in the class
Substituting the values in the equation , we get
The number of girls in the class = 30 - 12
The number of girls in the class = 18 girls
Therefore , the value of G is 18 girls
Hence , The number of girls in the class is 60% or 18 girls
To learn more about equations click :
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Which function defines the sequence 6, 8, 10? *
Answer: add 2
Step-by-step explanation:
A box of chocolate includes 24 chocolate pieces. If 1/4 of the chocolates contains nuts, how many chocolates do not contain nuts?
Answer:
18
Step-by-step explanation:
24 * 1/4 = 6
24-6 = 18
Martin has 38 dollars. Raymond has I fewer dollars than Martin. Choose the expression that shows how much money Raymond has.
+ 38
Answer:
38-l
Step-by-step explanation:
Three more than twice the sum of a number and half the number equals 105. Which equation models this relationship?
Answer:
The correct answer is A or 2(x+1/2x)=105
Step-by-step explanation:
3+2(x+1/2x)=105
A family wants to rent a surf board and two sets of snorkel gear for 24 hours. What is their total cost?
I am assuming snorkel gear is just that 3rd row
Answer:
$756
Step-by-step explanation:
A surfboard costs $310 for 12 hours. Doubled you have 620 for 24 hours.
Each set of snorkel gear costs $34 for 12 hours
34 times four is 136 for two sets for 24 hours.
136 + 620 = 756
Simplify the expression to a + bi form:
(-10 + 8i) - (-4 - 4i)
Answer:
i = 1/2 Or 0.5
Step-by-step explanation:
-10 + 8i + 4 + 4i = 12i - 6
12i = 6
i = 1/2 Or 0.5
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Answer:
bdhdbhdjndjxbdixn,jzhhdhuu,ubxhsjxjnx
What is the slope of a line that goes through the points (3,7) and (8, 11)
Answer:
The answer is
[tex] \huge \frac{4}{5} \\ [/tex]
Step-by-step explanation:
The slope of a line given two points can be found by using the formula
[tex]m = \frac{ y_2 - y _ 1}{x_ 2 - x_ 1} \\ [/tex]
From the question we have
[tex]m = \frac{11 - 7}{8 - 3} = \frac{4}{5} \\ [/tex]
We have the final answer as
[tex] \frac{4}{5} \\ [/tex]
Hope this helps you
−px+r=−8x−2 solve for x
Plx I need this ASAP
Answer:
x=[tex]\frac{2+r}{p-8\\}[/tex]
Step-by-step explanation:
each morning darnell does a combination of aerobics and stretching exercises. the exercises burn different amounts of calories per minute. the following system represents the time darnell exercises and the amount of calories burned. in the system, x represents the number of minutes darnell spends doing aerobics and y represents the number of minutes he spends stretching
x+y=60
15x+5y=500
Answer:
x=34
Step-by-step explanation:
Determine if the following equation has "One Solution", "No Solutions", or "Infinite Many Solutions".
2 (x + 3) = 6 + 2x
O One Solution
O No Solutions
Infinite Many Solutions
A bucket of water is 1/2 full but it still has 3 4/6 gallons of water in it how much water do you need to fill the bucket
Answer:
7 1/3 gallons
Step-by-step explanation:
If the bucket is half full and still has half to go, you double the current contents of the bucket. 3 4/6 times 2 is equal to 7 2/6 gallons which simplifies to 7 1/3 gallons.
I don't fully understand your question though, if the question is asking how much MORE water is needed to fill the bucket, it's 3 2/3 gallons. If it's asking how much water in TOTAL it would take to fill the bucket completely, it's 7 1/3 gallons.
Which expression has a value of 60?
360 ÷ 60
3,600 ÷ 6
3,600 ÷ 60
3,600 ÷ 600
Convert 120 lbs to kilograms. (1 kg = 2.2 lbs)
Answer:
54.4
Step-by-step explanation:
Answer: 54.55kg
Step-by-step explanation:
120 ÷ 2.2 = 54.55 kg
I NEED HELP PLEASE HELP!!
Answer:
It represents 100 mm of liquid leaking out in 10 minutes, sry I'm not good at slope
Answer:
the slope of the line is -10 and it represents the rate of which the liquid is leaking out of the container
Step-by-step explanation:
find any 2 points on the line. i chose (10,800) and (20,700)
the formula for slope is m = y2-y1 divided by x2-x1
plug the numbers in, then solve and it should be
m = 800-700 / 10 - 20
m = 100 / -10
m = -10
hope this helps! :)
4x
(3x + 13)
Help me with this please
Answer:
64x
Step-by-step explanation:
4x*3x is 12x
13*4x is 52x
52+12 is 64
64x
+
Problem
Step 1
Step 2
Step 3
Step 4
Step 5
3(-4 + x) -5x = 7x + 15
-12 +3x -15x = 7x + 115,
-12 -12x + 12x = 7x + 12x +15
-12 = 19x + 15
-12 -15 = 19x + 15 -151
-27 = 19x
8
Step 6
x= - 1 19
Answer:
step 1
Step-by-step explanation:
can you please help me answer this problem
Answer:
They are not similar
Step-by-step explanation:
Similar triangles are of same size
What is the sum of 5/2 + 5/6 + 5/24?
Answer:
In Exact form the answer is [tex]\frac{85}{24}[/tex]
I hope this helps.
The perimeter of the polygon below is___
units.
How do you solve:
-3.6 = -8.5 - 8.1x - 8.6x
Answer:
The answer is x = − 0.29341317
Step-by-step explanation:
solve the problem
1 . 5 x 0 . 3 = ?
Answer:
0.45
Step-by-step explanation:
1.5 × 0.3 = 0.45I hope this helps!
Marc is helping out with the school bake sale. He has
50 cookies to place in bags. He places 3 cookies in each
bag. How many bags will he use? How many cookies will be left over?
will be left over
Answer: 16 Bags with 2 Cookies left over
Step-by-step explanation:
50 divided by 3 equals 16 r2
Did this help? Let me know :)
how do I find the slope
Answer:
plot the numbers
Step-by-step explanation:
Answer:
You need to plot the points on their corresponding places.
Step-by-step explanation:
The absolute values of two numbers that are additive inverses will ____________ be the same.
Answer:
A number and its additive inverse are always the same distance from zero, and so they have the same absolute value.
Step-by-step explanation:
Hope this helps!!
Answer:
A number and its additive inverse are always the same distance from zero, and so they have the same absolute value.
Step-by-step explanation:
other dude said so
8-(x+2) = 6(x-4) what is the answer is 6 or something else
Answer:
x=30/7 or decimal x=4.28571
Step-by-step explanation:
Option 1
Option 2
Option 3
Option 4
Which one is correct?
A baseball team won 20 games and lost 10 games. What percent of the games did the team win?
A. 333%
B. 50%
C.663%
D.200%
Answer:
c
Step-by-step explanation:
how old is molly and simba
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