Answer:
I did this in my head so I'm not sure but I think it's -1/5=p
40% of the students in a class like apples for breakfast. If 20 students like apples, how many students are in the class.
Answer:
there are 50 people in the class
Step-by-step explanation:
20=%40
10=%20
5=%10
%10x10=%100
replace 10 percent with its equal, which is 5
5x10=50
The solution is 50 students
The total number of students in the class is 50 students
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 students in the class be A
Now , the value of A is
The number of students in the class who likes apples = 20 students
The percentage of students who likes apples = 40 %
So , the equation will be
percentage of students who likes apples x total number of students in the class = number of students in the class who likes apples
Substituting the values in the equation , we get
( 40 / 100 ) A = 20
On simplifying the equation , we get
Multiply by 100 on both sides of the equation , we get
40A = 2000
Divide by 40 on both sides of the equation , we get
A = 2000 / 40
A = 50 students
Therefore , the value of A is 50 students
Hence , the total number of students is 50 students
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Which expression is equal to 1/8000 written in scientific notation?
A. 8.0 x 10^3
B. 1.25 x 10^-4
O C. 125 x 10^-5
D. 1.25 x 10^4
The given fraction in scientific notation is 1.25×10⁻⁴. Therefore, option B is the correct answer.
What is scientific notation?Scientific notation is a method for expressing a given quantity as a number having significant digits necessary for a specified degree of accuracy, multiplied by 10 to the appropriate power such as 1.56×10⁷.
The given number is 1/8000.
The decimal form of given fraction is 0.000125.
Now, in scientific notation 1.25×10⁻⁴
Therefore, option B is the correct answer.
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please help me with this its for math will give brainly for correct answer
Indicate whether (2, 7) is a solution of the given system.
Yes, (2, 7) is a solution of the system.
No, (2, 7) is not a solution of the system.
Answer:
Yes. Plug in your x and y into the first given equation and you'll see why.
(7) ≥ -(2)+1
7 ≥ -1 (7 is greater than or equal to -1)
...As well as the second equation.
(7) < 4(2)+2
7 < 8+2
7 < 10 (7 is less than 10)
Step-by-step explanation:
Answer:
i am at 22 i thinkkk
Step-by-step explanation:
25 quesion thingy
Max's shop sells stuffed teddy bears. Today, Max sold 7 teddy bears for a total of $122.50. Which equation can be used to find b, the cost of each bear?
Answer: 17.50
Step-by-step explanation:
What’s equivalent to 3/4
Jared's battery has 4/25 percent of life left. Edward's battery has 3/25 percent of life left. Who has the most battery life left?
Answer:
Jared
Step-by-step explanation:
4/25 is larger than 3/25
Find the balance in Grace’s account after 2 years for a principal of $2500 if the bank pays simple interest at a rate of 5.25%.
Answer:
2762.5
Step-by-step explanation:
a runner speeds up from 5 m/s to 9 m/s during the last strech of a race at a rate of 1 m/s². how long does it take the runner to reach the faster pace?
How many pounds are equivalent to 40 ounces?
Answer:
2.5 Pounds
Step-by-step explanation:
Which sets of ordered pairs show equivalent ratios? Use the grid to help you. Check all that apply.
(1, 2), (2, 3), (4, 7)
(2, 2), (4, 4), (6, 6)
(3, 1), (4, 1), (5, 1)
(4, 1), (8, 2), (12, 3)
(2, 1), (4, 3), (5, 4)
Help plz!!!?!?!?!!!!!!!!!!
Can someone please help me I’m struggling
Answer:
point form is (2,-1), equation form is x= 2, y=-1
Step-by-step explanation:
mark is an auto dealer he sold a car and made a loss of 10% if his loss was $150000 A calculate how much he sold the car for B what was his cost price
Answer:
A. he sold the the car for 1350000
B. his cost price is 1500000
Step-by-step explanation:
A. 150000---> 10%
x-----> 90%
cross multiplication: x=150000×90/10=1350000
B. 10%( price) +90%(price)
1350000+150000=1500000
The number of people living on a remote island decreases by 9% every 10 years. In 1950 there were 18000 living on the island. Calculate how many less people will be living on the island in 2020.
Answer: 9,301 people
Step-by-step explanation:
First find the number of years that have passed:
= 2020 - 1950
= 70 years
Population decreases every 10 years so in 7 years it would have increased:
= 70/10
= 7 times
In 2020 therefore:
= 18,000 * (1 - 9%)⁷
= 9,301 people
What are the x- and y-intercepts of the line? 2x – 3y = –12
Show work
Answer:
You can use the intercepts to graph the line. The graph of 2x + 3y = 12 crosses the x-axis at (6, 0), so its x-intercept is 6. The graph of 2x + 3y = 12 crosses the y-axis at (0, 4), so its y-intercept is 4.
Step-by-step explanation:
Answer:
x = -6 y = 4
(-6,0) (0,4)
Step-by-step explanation:
2x - 3y = -12
cancel out the y
2x - 3(0) = -12
2x = -12
divide both sides by 2
x = -6
2x - 3y = -12
cancel out the x
2(0) - 3y = -12
-3y = -12
divide both sides by -3
y = 4
Hope this Helps!!!
What is 128 1/5 in simplest radical form
Answer:
This is the simplest radical form of 128.
8√2 .
Step-by-step explanation:
√128=√16×√8→4×√4×√2=8√2 .
What is the slope of this line?
Enter your answer as a whole number or a fraction in simplest form in the box.
Answer:
0
Step-by-step explanation:
the slope of this line is a zero slope as it is completely horizontal
The slope is the steepness of a line.
The slope of the given line is -5.
What is equation of a line?The equation of a line is a form of representing the set of points, which form a line in a coordinate system.
The general equation of a straight line is given as:
y = mx + c,
where m = slope of the line and c = y-intercept.
We have,
A line on a graph.
Three points are given on the graph:
(2, -8), (0, 2), and (7, 2)
We can select any two points and find the slope of the line.
The slope of a line is given as:
Slope = (d - b) / (c - a)
Where (a, b) and (c, d) are the two points.
(a, b) = (2, -8) and (c, d) = (0, 2)
Slope = (2 - (-8)) / (0 - 2)
Slope = (2 + 8) / -2
Slope = 10 / -2
Slope = -5
Thus,
The slope of the given line is -5.
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Use a combination to answer the following question.
The track coach needs to higher three managers for the track team. If ten students applied for the positions,
How many ways can the coach select three managers from 10 students?
n=
r=
Answer:
(answer with no comas or decimals)
Answer:
120 POSSIBLE COMBINATIONS
Step-by-step explanation:
PLEASE MARK ME AS BRAINLIEST
what is the value of x in the equation (5x+3)?
Answer: The value of x is 2
Step-by-step explanation:
I just subtracted from both sides and you get 2 and another way to say this is 5-3 and 3-3
pls help i dont understand
How many triangles can be drawn with side lengths 3, 5, and 9?
Answer:
no triangle
Step-by-step explanation:
SOLUTION: No; . The sum of the lengths of any two sides of a triangle must be greater than the length of the third side.
Solve for k. 1 + 3k = 10
Answer:
k = 3
Step-by-step explanation:
3 x 3 = 9
1 + 9 = 10
Ez
What kind of quadrilateral is the shape shown ? Please choose correct answers that apply !!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!
Answer:
Option A
Step-by-step explanation:
It's a parallelogram because the four sides all has equal length
a caterer makes 3 extra sandwiches for every 12 sandwiches a customer orders. The caterer makes a total of 120 sandwiches for a customer. How many sandwiches did the customer order? (Not including the extra sandwiches)
Answer:
96
Step-by-step explanation: 12+3=15 15x8= 120 then take out the 3 from the 15 and do 12x8 and it's 96.
Please help! Will Mark if you are right!!
What is the turning point of the graph of f(x)=|x−4|?
Answer:
the second one
Step-by-step explanation:
Find the value of x in the figure.
(4x-5)
177
(4x-3)
(3x-3)
118
(3x+6)
Answer:
x = 35
Step-by-step explanation:
The sum of the interior angles of a polygon is
sum = 180° (n - 2) ← n is the number of sides
Here n = 6, then
sum = 180° × 4 = 720°
sum the given angles and equate to 720
4x - 5 + 117 + 3x - 3 + 3x + 6 + 118 + 4x - 3 = 720, that is
14x + 230 = 720 ( subtract 230 from both sides )
14x = 490 ( divide both sides by 14 )
x = 35
An aquarium is leaking water at the rate of three quarts in 4 days.How many quarts are leaked in 1 week?How many days does it take for 9 quarts to leak out of the aquarium?
Answer:
[tex]\frac{21}{4}[/tex] quarts
12 days
Step-by-step explanation:
Given that:
Amount of water leaked in 4 days = 3 quarts
To find:
Number of quarts leaked in 1 week?
Number of days taken for the leakage of 9 quarts of water?
Solution:
We can simply use unitary method or the ratio to find the answers of the questions asked in the statement.
As per question statement:
Amount of water leaked in 4 days = 3 quarts
Dividing by 4 on both sides:
Amount of water leaked in 1 day = [tex]\frac{3}{4}[/tex] quarts
Multiplying by 7 on both sides:
Amount of water leaked in 7 days = [tex]\frac{3}{4}\times 7 = \frac{21}{4}[/tex] quarts
Number of days taken for the leakage of 3 quarts = 4 days
Multiplying by 3 on both sides:
Number of days taken for the leakage of 3 [tex]\times[/tex] 3 = 9 quarts = 4 [tex]\times[/tex] 3 = 12 days
3)
Which of the choices shown are the lengths of the sides of a right triangle?
A)
1, 1, 2
B)
5, 6, 12
3,5,8
D)
10, 24, 26
Please help will give brainliesst
6h+(-8.1d)-13+5d-3.2h
help please!!!! would really appreciate it
Which subject is it? and which lesson