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IRINA_888 [86]
3 years ago
5

-9x - x - 7x² - 6x² + 8 +6 Help please

Mathematics
2 answers:
nikklg [1K]3 years ago
8 0
-13x to the power of 2 - 10x + 14
hammer [34]3 years ago
3 0

Answer:

\boxed{ \bold{ \huge{ { \sf{ - 13 {x}^{2}  - 10x + 14}}}}}

Step-by-step explanation:

\sf{ - 9x - x - 7 {x}^{2}  - 6 {x}^{2}  + 8 + 6}

Collect like terms

⇒\sf{ - 7 {x}^{2}  - 6 {x}^{2}  - 9x - x + 8 + 6}

⇒\sf{ - 13 {x}^{2}  - 10x + 8 + 6}

Add the numbers

⇒\sf{ - 13 {x}^{2}  - 10x + 14}

Hope I helped!

Best regards!!

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The heights of a random sample of 100 women are recorded. The sample mean is 65.3 inches and the sample standard deviation is 3
Keith_Richards [23]

Answer: B. 65.3\pm(2)(0.3)

Step-by-step explanation:

The confidence interval for the population mean is given by :-

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

Given : Sample size : n= 100

Sample mean : \overline{x}=65.3\text{ inches}

Standard deviation: \sigma=3 \text{ inches}

Level of confidence = 0.95

Significance level : \alpha=1-0.95=0.05

Critical value : z_{\alpha/2}=1.96

Then, 95% confidence interval for the population mean will be :-

65.3\pm (1.96)\dfrac{3}{\sqrt{100}}\\\\\approx65.3\pm(2)(\dfrac{3}{10})=65.3\pm(2)(0.3)

8 0
3 years ago
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PLEASE CAN SOMEONE HELP????!!!!
bija089 [108]
For this you would take the yellow circle and count the spot in a directions (6) and for blue you would do the same (2) so scale factor is 3
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2 years ago
4,864 divsion 2 it multiple 2 word probems
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<h3>4864÷2</h3><h3>2432×2</h3><h3>= 4864</h3>

please mark this answer as brainlist

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3 years ago
The volume of a cube is found using the formula L^3 where L is the side length. What is the volume of a cube in cubic feet, that
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Hello,

V=(3/5)³=27/125
===============
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29 kg of onions cost $145.how much would 12 kg cost?
Romashka-Z-Leto [24]
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