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tino4ka555 [31]
3 years ago
11

X2 + 6x – 7 = 0? 1) (x + 3)2 = 2 2) (x – 3)2 = 2 3) (x – 3)2 = 16 4) (x + 3)2 = 16

Mathematics
1 answer:
patriot [66]3 years ago
6 0

Answer:option d i think so~~

Step-by-step explanation:

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Pls give the answer given below!ASAP
bekas [8.4K]

Answer:

<em>Option </em><em>3</em>

Step-by-step explanation:

Rewriting input as fractions if necessary:

3/8, 3/20

For the denominators (8, 20) the least common multiple (LCM) is 40.

LCM(8, 20)

Therefore, the least common denominator (LCD) is 40.

Calculations to rewrite the original inputs as equivalent fractions with the LCD:

3/8 = 3/8 × 5/5 = 15/40

3/20 = 3/20 × 2/2 = 6/40

8 0
3 years ago
As a manager for an advertising company, you must plan a campaign designed to increase Twitter usage. A recent survey suggests t
kolbaska11 [484]
Given:
Sample proportion = 85% = 0.85.
Confidence level (CL) = 90%.
Confidence interval (CI) \hat{p} \pm z^{*} \sqrt{ \frac{\hat{p}(1-\hat{p})}{n} }  \\ where \\ n=sample\, size \\ z^{*}=1.645 \, at \, 90\% \, CL

We want the confidence interval to be 5% or 0.05. Therefore
0.85 - 1.645 \sqrt{ \frac{0.85(1-0.85)}{n} }=0.05 \\ 0.85 -  \frac{0.5874}{ \sqrt{n} } =0.05 \\  \frac{0.5874}{ \sqrt{n} }=0.8 \\  \sqrt{n} = .7342 \\ n=0.54

Because this number is less than 1, a default sample size of 30 (for the normal distribution) is recommended.

Answer: 30

3 0
3 years ago
Use the whole number product and place value reasoning to place the decimal point in the second product. Explain how you know.
BARSIC [14]
The answer to ypur question is 48.24
5 0
4 years ago
Read 2 more answers
Based on the given information, what can you conclude, and why? (PLEASE HELP!)
pychu [463]
That would be the third option
6 0
3 years ago
7x-3=18<br> What is x in the question i cbat figure it out
il63 [147K]
7x-3 = 18
+3 for both sides

7x = 21
devide 7 for both sides

x = 3
3 0
3 years ago
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