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igomit [66]
2 years ago
7

Which of the following data sets could most likely be normally distributed

Mathematics
1 answer:
mamaluj [8]2 years ago
7 0
I’m not 100% but l’ll say go for D
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Find all solutions to the equation. 7 sin2x - 14 sin x + 2 = -5
Alenkinab [10]
7sin²x-14sinx+2= -5
7sin²x-14sinx+7=0
7(sin²x-2sinx+1)=0
sin²x-2sinx+1=0
(sinx-1)(sinx-1)=0
sinx-1=0
sinx=1
x= \frac{ \pi }{2} +2n \pi  where n is an integer


4 0
3 years ago
How do I simplify (6x-10x^2+3)-(5x^2+3x-4) ???
Neporo4naja [7]

Answer:

Step-by-step explanation:

6x-10x^2+3-(5x^2+3x-4)

when there is a - in front of an expression in (), change the sign of each term in the expression

6x-10x^2+3-5x^2-3x+4

now collect like terms

3x-10x^2+3-5x^2+4

3x-15x^2+3+4

3x-15x^2+7

now use the commutative property to reorder the terms

-15x^2+3x+7

=-15x^2+3x+7

3 0
3 years ago
Use an Addition or Subtraction Formula to write the expression as a trigonometric function of one number. sin 3π /7 cos 2π/ 21 −
nydimaria [60]

Answer:

sin(3π/7 - 2π/21)

Step-by-step explanation:

Given

sin 3π /7 cos 2π/ 21 − cos 3π/ 7 sin 2π/ 21

Required

Write a trigonometry formula for the expression

Using sine formula, we have:

sin(A - B) = sinAcosB - cosAsinB

The above formula can be applied to the given expression where

A = 3π/7

B = 2π/21

So, the trigonometry formula is:

sin 3π /7 cos 2π/ 21 − cos 3π/ 7 sin 2π/ 21= sin(3π/7 - 2π/21)

3 0
3 years ago
Question 1 of 5
Sladkaya [172]

Answer:

The simplified fractional equivalent is \frac{1}{4}

Step-by-step explanation:

we know that

A <u><em>terminating decimal</em></u> is a decimal that ends. So, it's a decimal with a finite number of digits.

we have

0.25

Let

x=0.25

Multiply by 100 both sides

100x=25

Divide by 100 both sides

x=\frac{25}{100}

Simplify

Divide by 25 both numerator and denominator

x=\frac{1}{4}

7 0
3 years ago
Verify that A(3, 1), B(0, 5), and C(-1, -1) are the vertices of a right triangle.
Zina [86]
No, not a right triangle
4 0
3 years ago
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