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3 years ago

I need help with that question please

Mathematics

2 answers:

Artemon [7]3 years ago

8 0

C is the correct answer

Lynna [10]3 years ago

5 0

Y goes up 3 every time
x goes up 1 every time
the rate is 3
and why x is 0 y is 0
the answer is b.

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Liz Williams claims to have psychic abilities and predict the future. Anderson Cooper, a CNN personality plans to test her in hi

Katena32 [7]

Answer:

b. Because the probability of being 15 or more correct is 0.0207, it is likely that she is just guessing at the questions.

Step-by-step explanation:

-This is a binomial probability distribution with p=0.5, n=20 and x=15.

The function is expressed as:

$P(X=x)={n\choose x}p^x(1-p)^{n-x}$

We calculate the probability of guessing 15 or more correctly:

$P(X\geq 15)=1-P(X$

The probability of passing, guessing 15+ correctly, is 0.0207. This probability is very low and it is it is likely that she is just guessing at the questions

7 0

3 years ago

7²+4(2²+3)/2<br><br> please help

RUDIKE [14]

Answer:

i think it's 63

Step-by-step explanation:

ask g89gle ig

7 0

3 years ago

0.123 × 0.007 = _______. A. 0.000861 B. 0.00871 C. 0.861 D. 0.000900

melamori03 [73]

The answer is A 0.000861

3 0

3 years ago

Read 2 more answers

In the coordinate plane, draw quadrilateral ABCD with A(–5, 0), B(2, –6), C(8, 1), and D(1, 7), then demonstrate that ABCD is a

Len [333]

Answer:

ABCD is a rectangle

Step-by-step explanation:

∵ A = (-5 , 0) , B = (2 , -6) , C = (8 , 1) , D = (1 , 7)

∵ The x-coordinate of the mid-point of AC = (-5 + 8)/2 =3/2

∵ The y-coordinate of the mid-point of AC = (0 + 1)/2 = 1/2

∴ The mid-point of AC = (3/2 , 1/2)

∵ The x-coordinate of the mid-point of BD = (2 + 1)/2 =3/2

∵ The y-coordinate of the mid-point of BD = (-6 + 7)/2 = 1/2

∴ The mid-point of BD = (3/2 , 1/2)

∴ The mid-point of AC = The mid-point of BD ⇒ (1)

∵ AC = √[(8 - -5)²+(1 - 0)² = √170

∵ BD = √[(1 - 2)²+(7 - -6)² = √170

∴ AC = BD ⇒ (2)

From (1) and (2)

AC and BD equal each other and bisects each other

∴ ABCD is a rectangle

7 0

3 years ago

A 42inch board is cut into pieces . one piece is two times the length of the order

aksik [14]

Answer:

14 and 28 in

Step-by-step explanation

the ratio= 2:1

so thre are 3 parts

42/3 = 14

multiply by 2 and get 28

5 0

3 years ago