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3 years ago

Plz i need the answer

Mathematics

2 answers:

Rom4ik [11]3 years ago

6 0

Answer:

a) $\frac{2}{18}$ or 1/9

b) $\frac{14}{18}$

c) $\frac{1}{5}$

Step-by-step explanation:

Brut [27]3 years ago

5 0

(a)1/10

(b)4/5

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What percent of 99 is 90?

Yuri [45]

Answer:

91%

Step-by-step explanation:

We can use the formula $\frac{is}{of}=\frac{percent}{100}$

"is" is 90
"of" is 99
"percent" is what we are solving for so we will denote it as x

Substituting in our values we get $\frac{90}{99}=\frac{x}{100}$

We will need to cross multiply here to get (90)(100) = (x%)(99)
This simplifies to 9000 = 99x%
Dividing by 99 on both sides we get 90.9% → x = 91%

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3 years ago

Which polynomial can be simplified to a difference of squares

Mrrafil [7]

<h2>Hello!</h2>

The answer is:

The polynomial that can be simplified to a difference of squares is the second polynomial:

$16a^{2}-4a+4a-1=16a^{2}=(4a)^{2}-(1)^{2}=(4-1)(4+1)$

To solve this problem, we need to look for which of the given quadratic terms given for the different polynomials can be a result of squaring (elevating by two).

So,

Discarding, we have:

The quadratic terms of the given polynomials are:

$First=10a^{2}$

$Second=16a^{2}$

$Third=25a^{2}$

$Fourth=24a^{2}$

We have that the coefficients of the quadratic terms that can be obtained by squaring are:

$16a^{2} =(4a)^{2} \\\\25a^{2} =(5a)^{2}$

The other two coefficients are not perfect squares since they can not be obtained by square rooting whole numbers.

So, the first and the fourth polynomial are discarded and cannot be simplified to a difference of squares at least using whole numbers.

Therefore, we need to work with the second and the third polynomial.

For the second polynomial, we have:

$16a^{2} -4a+4a-1=16a^{2}=(4a)^{2}-(1)^{2} =(4-1)(4+1)$

So, the second polynomial can be simplified to a difference of squares.

For the third polynomial, we have:

$25a^{2} +6a-6a+36=16a^{2}+36=(5a)^{2}+(6)^{2}$

So, the third polynomial cannot be simplified to a difference of squares since it's a sum of squares.

Hence, the polynomial that can be simplified to a difference of squares is the second polynomial:

$16a^{2}-4a+4a-1=16a^{2}=(4a)^{2}-(1)^{2}$

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3 years ago

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Kaylis [27]

Hightest exponent is 3
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C is answer

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Cerrena [4.2K]

Answer:

The regression line is not a good model because there is a pattern in the residual plot.

Step-by-step explanation:

Given is a residual plot for a data set

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Also there is not a pattern of linear trend.

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