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3 years ago

Find the sum of the polynomials.

Mathematics

1 answer:

Bond [772]3 years ago

6 0

(6n^2-4)+(-2n^2+9)
6n^2-4-2n^2+9
4n^2+5
Hope this helps!

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CAn anyone help me with this question plz

mario62 [17]

Answer:

3000ft²

Step-by-step explanation:

2cm =5 ft

24 cm = 60 ft

20 cm = 50 ft

Area = 60 *50

= 3000

3 0

3 years ago

10# A consumer advocacy group is doing a large study on car rental practices. Among other things, the consumer group would like

ella [17]

ANSWER:

104

STEP-BY-STEP EXPLANATION:

Given:

Standard deviation (σ) = 700

Confidence level = 95%

Mean error (Eμ) = 135

We have for a confidence level of 95%:

$\begin{gathered} \alpha=100\%-95\%=5\%=0.05 \\ \\ \alpha\text{/2}=\frac{0.05}{2}=0.025 \\ \\ \text{ The corresponding Z value for \alpha/2 = 0.025 is as follows:} \\ \\ Z_{\alpha\text{/2}}=1.96 \end{gathered}$

Now, we calculate the minimum value of the sample size as follows:

$\begin{gathered} n=\left(\frac{Z_{\alpha\text{/2}}\cdot\sigma}{E}\right)^2 \\ \\ \text{ We replacing:} \\ \\ \:n=\left(\frac{1.96\cdot 700}{135}\right)^2 \\ \\ \:n=103.2858\cong104 \end{gathered}$

The minimum sample size needed is 104

3 0

1 year ago

Can someone do this?

malfutka [58]

Answer:

Step-by-step explanation:

56+25%=70 (:

8 0

3 years ago

In triangle ABC, a = 3, b = 5, and c = 7. Find the approximate value of angle A.

Lady bird [3.3K]

Answer:

21.8° (22° to the nearest degree)

Step-by-step explanation:

Using cosine law:

a² = b² + c² - 2bc(cosA)

3² = 5² + 7² - 2(5)(7)cosA

cosA = 13/14

A = 21.7867893

Approximately angle: 22°

6 0

3 years ago

What is the median of the data displayed in this box-and-whisker plot?

goldenfox [79]

Answer:

106.25

Step-by-step explanation:

99.5+113= 212.5 /2 = 106.25

7 0

3 years ago