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2 years ago

9

Ally surveyed 5 classrooms. She wanted to know the number of students in each class who love painting. The data she collected fr

om the 5 classrooms is below.
10, 7, 9, 11, 8

The value that could be the best measure of the center of this data is__.

1 answer:

melamori03 [73]2 years ago

8 0

Answer:

45 im not to shur

Step-by-step explanation:

10 + 7 + 9 + 11 + 8 = ?

? = 45

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FIRST QUESTION!!!!

aleksley [76]

Option B: 1088 is the next term in the geometric sequence.

Explanation:

The sequence is $17,68,272$

We need to determine the next term.

To determine the next term, let us find the common ratio between the terms.

$r=\frac{68}{17} =4$

$r=\frac{272}{68} =4$

Thus, the common ratio is $r=4$

And the given sequence is a geometric sequence.

To determine the next term in a geometric sequence, we always multiply the common ratio to the current term.

Hence, the current term is 272 and the common ratio is 4.

Next term = Current term × Common ratio

$=272\times4$

$=1088$

Thus, the next term of the geometric sequence is 1088

Therefore, Option B is the correct answer.

6 0

3 years ago

1. Simplify (32m n ^ 2 +50m^ n n)-(10mn^ 2 -1b m ^ 2 n+64)

MAVERICK [17]

Answer:

=m^2nb+22mn^2+50mn^n-64

Step-by-step explanation:

6 0

2 years ago

Use the quadratic formula to solve for the roots in the following equation. 4x 2 + 5x + 2 = 2x 2 + 7x – 1

Natali5045456 [20]

Answer:

So, The roots are $x= \frac{1+\sqrt{5}i}{2} \,\, and \,\,x= \frac{1-\sqrt{5}i}{2}$

Step-by-step explanation:

$4x^2 + 5x + 2 = 2x^2 + 7x - 1$

We need to solve the equation to find the roots using quadratic formula.

The quadratic formula is:

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

Rearranging the above equation:

$4x^2 -2x^2+ 5x-7x + 2+1 =0$

$2x^2 -2x + 3 =0$

Where a =2 , b=-2 and c =3 Putting values in quadratic equation and solving:

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\x=\frac{-(-2)\pm\sqrt{(-2)^2-4(2)(3)}}{2(2)}\\x=\frac{2\pm\sqrt{4-24}}{4}\\x=\frac{2\pm\sqrt{-20}}{4}\\\sqrt{-20} \,\,can\,\,be\,\, written\,\, as\,\, 2\sqrt{-5}\\ x=\frac{2\pm2\sqrt{-5}}{4}\\x=\frac{2+2\sqrt{-5}}{4} \,\, and \,\, x=\frac{2-2\sqrt{-5}}{4}\\x=\frac{2(1+\sqrt{-5})}{4} \,\, and \,\, x=\frac{2(1-\sqrt{-5})}{4}\\ x=\frac{1+\sqrt{-5}}{2} \,\, and \,\, x=\frac{1-\sqrt{-5}}{2}\\As \,\,we\,\, know\,\, \sqrt{-1} = i \\$

$x= \frac{1+\sqrt{5}i}{2} \,\, and \,\,x= \frac{1-\sqrt{5}i}{2}$

So, The roots are $x= \frac{1+\sqrt{5}i}{2} \,\, and \,\,x= \frac{1-\sqrt{5}i}{2}$

6 0

3 years ago

What equation corresponds with the situation?

madreJ [45]

Answer:

Story 1

Step-by-step explanation:

For story 1:

Lin gave 12 flyers to 3 people. She took the remaining flyers (90 - (12*3)) and divided then into groups of 3 to give to the volunteers. That would be 3(12) + 3(y) = 90 which is also 3(12+y) = 90.

For story 2:

The equation would be "3(y) + 12 = 90" and not "3(12+y) = 90"

8 0

2 years ago

Need help with number 4 and 5

Vsevolod [243]

Answer:

4 is D

5 is B

Step-by-step explanation:

for #4 just plug the numbers into the formula: y = mx + b

for #5 use the slope formula.

7 0

3 years ago