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3 years ago

Factor the polynomial completely. If the polynomial cannno be factored, sayit is prime

1 answer:

5 0

Ok so first, you can take out a greatest common factor, which is 2
You’ll be left with 2(x^2-3x-20)
I factored from there
Here’s my work
Hope this helps :)

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A manufacturer of college textbooks is interested in estimating the strength of the bindings produced by a particular binding ma

stepladder [879]

Answer: 196

Step-by-step explanation:

As per given , we have

Population standard deviation: $\sigma=0.6\ lb$

Significance level : $\alpha: 1-0.98=0.02$

Using the z-value table , the critical z value for 98% confidence : $z_{\alpha/2}=2.33$

Margin of error : E= 01 lb

Sample size : $n=(\dfrac{z_{\alpha/2}\cdot\sigma}{E})^2$

$n=(\dfrac{(2.33)\cdot(0.6)}{0.1})^2$

Simplify , we get

$n=195.4404\approx196$

Hence, the minimum sample size required for books = 196

8 0

3 years ago

Find the area of the shape shown below.

GalinKa [24]

Answer:

Step-by-step explanation:

Because of its shape I would imagine another flipped so it makes a square then solve for the square the divide.

7 x 12 =84

84÷2=42

3 0

3 years ago

Last weekend Ryan eaened 27$ babysitting He earned $19 on friday and the rest on Saturday which equation can you use to find the

rewona [7]

Answer:

19+s=27

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Which of the algebraic expressions are not linear expressions? Select all that apply. a. 3x - 2 b. -9y c. -7x^2^ + 4x d. -1/2x^2

Sedaia [141]

Answer:

c, d and e

Step-by-step explanation:

A linear expression is an expression in which sum of exponents of variables is at most 1 in each of its terms.

Option a: $3x - 2$

Here, the exponent of the variable is 1.

So, it is a linear expression.

Option b: $-9y$

Here, the exponent of the variable is 1.

So, it is a linear expression.

Option c: $-7x^2 + 4x$

Here, the highest exponent of the variable is 2.

So, it is NOT a linear expression.

Option d: $-\frac{1}{2} x^2$

Here, the exponent of the variable is 2.

So, it is NOT a linear expression.

Option e: $8xy$

Here, sum of exponents of variables is 2.

So, it is NOT a linear expression.

Hence, c, d and e are NOT algebraic expressions.

6 0

3 years ago

Write as a algebraic expression: 22% of a.

Sindrei [870]

.22a is the algebraic expression. I hope this helps and have a great day!

7 0

3 years ago

Read 2 more answers