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3 years ago

Itzzzz.zoe__354 is my instagram dont be shy follow it please

Mathematics

2 answers:

enot [183]3 years ago

6 0

Thought this was a problem shaking my head

nirvana33 [79]3 years ago

5 0

Answer:

thank you

Step-by-step explanation:

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-6x^3-4x^2+15x-5 - -x^2-8x+14

Ilya [14]

Answer:

-1

Step-by-step explanation:

7 0

3 years ago

Sum of 2 numbers equals 95 .if one number exeeds by 25 find the athor number

abruzzese [7]

Answer:

Well it could be 25 and 69 or 30 and 65

Step-by-step explanation:

Not sure if I answered right but hope I helped!

3 0

3 years ago

Given the values in the table on the left come from

schepotkina [342]

–3.2 < x < –2.4

1.6 < x < 2.4

7 0

3 years ago

One sample has Aa Aa One sample has n 10 scores and a variance of s2 20, and a second sample has n 15 scores and a variance of s

siniylev [52]

Answer:

option (a) It will be closer to 30 than to 20

Step-by-step explanation:

Data provided in the question:

For sample 1:

n₁ = 10

variance, s₁² = 20

For sample 2:

n₂ = 15

variance, s₂² = 30

Now,

The pooled variance is calculated using the formula,

$S^{2}_{p} = \frac{(n_{1}-1)\times s^{2}_{1} +(n_{2}-1)\times s^{2}_{2}}{n_{1}+n_{2}-2}$

on substituting the given respective values, we get

$S^{2}_{p} = \frac{(10-1)\times 20 +(15-1)\times 30}{10+15-2}$

$S^{2}_{p}$ = 26.0869

Hence,

the pooled variance will be closer to 30 than to 20

Therefore,

The correct answer is option (a) It will be closer to 30 than to 20

4 0

3 years ago

Determine if the expression 9y5 – 10y3 is a polynomial or not. If it is a polynomial,

Stolb23 [73]

I am going to assume that the equation was supposed to be $9y^{5}$ $-10y^{3}$

Answer:

It is a polynomial. It is a binomial and it has a degree of 5.

Step-by-step explanation:

A polynomial is an expression consisting of variables and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponentiation of variables so $9y^{5}$ $-10y^{3}$ will be considered a polynomial.

A binomial is a polynomial with 2 terms.

The degree of a polynomial is the highest exponent in it which in this equation is 5.

8 0

3 years ago