Ben takes a random sample of 25 students in his seventh grade class and finds that 85% of the sample prefers math over science.there are 150 students in the seventh grade.based on the sample proportion,about how many students in the seventh grade would be expected to prefer math over science
Answers
Answer:
The number of students in the seventh grade who would be expected to prefer math over science are:
128
Step-by-step explanation:
Total number of students in seventh grade are: 150 students.
Now he took a sample of 25 students and find that the 85% of the sample prefers math over science.
This means that out of the sample the number of students who prefer maths over science is:
Now, out of the total seventh graders the number of students who prefer math over science is:
which is approximately equal to 128.
Hence, the answer is:
128 students
Option 1 : 25
Option 2 : 85
Option 3 :150
Option 4 :128
Solutions - Convert the percent into decimal and multiply.
85% of 150 = 0.85 * 150
= 127.5 which is rounded to 128
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You can find the product of any two binomials using the _____ property.
7.8+ (x-18)=31 Please Help Asapty
Solve for X:-2(x+2) < 14
18x^2y-2y
Answers
Answer:
2y( 3x-1)(3x+1)
Step-by-step explanation:
18x^2y-2y
Factor out the greatest common factor 2y
2y( 9x^2 -1)
The term in the parentheses is the difference of squares
a^2 - b^2 = (a-b)(a+b)
2y( 3x-1)(3x+1)
Answers
Answer:
24 and 30
Step-by-step explanation:
The sum of two numbers is 54. Let's use the variables x and y to represent theses numbers:
x + y = 54
The smaller number is 6 less than the bigger one. Let's say that x is the smaller number and y is the bigger number:
y - 6 = x
Now we know that x is equivalent to y - 6. So, let's replace x with y - 6 in the original equation:
x + y = 54
y - 6 + y = 54
Combine like terms:
2y - 6 = 54
Now we can solve for y:
2y - 6 = 54
Add 6 to both sides of the equation to isolate the 2y:
2y = 60
Divide both sides by 2 to find the value of y:
y = 30
Now that we know the value of y, we can solve for x:
y - 6 = x
30 - 6 = x
24 = x
The value of the two numbers is 24 and 30.
Answers
Answers
Answer:
A.) -5. E.) 6 hope I could help
52 square meters
15 square meters
104 square meters
diagram below.
Answers
area of a right triangle = ab/2 where: a and b are the legs
based on the image: a = 5 m
20 square meters = (5m * b) /2
20 sq. m * 2 = 5m * b
40 sq. m / 5m = b
8 m = b
So the image consists of 2 right triangles with a square in the middle.
Area of a square = a² = (8m)² = 64m²
Total area of the parallelogram = 2 right triangle * 20m² + 1 square *64m²
Total Area = 40m² + 64m²
Total area = 104m² ⇒ 104 square meters.