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3 years ago

11

True or false the difference between consecutive perfect square numbers is always odd

1 answer:

ipn [44]3 years ago

4 0

Hi,
That would be true.

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Which molecule activates light reactions

natta225 [31]

Answer:

Step-by-step explanation:

The light-dependent reactions use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH. In plants, the light reactions take place in the thylakoid membranes of organelles called chloroplasts.

5 0

3 years ago

Evaluate the expression for <br> x = 4, y=-2, z= -3.<br> 2² + 8zy - y²

andrew11 [14]

Answer:

Pretty sure its 53

Step-by-step explanation:

9+48-4

3 0

2 years ago

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Jasmine made a pitcher of lemonade. One pitcher contains 1212 glasses of lemonade. After Jasmine serves 44 glasses of lemonade,

Rom4ik [11]

She can serve 1,168 glasses of lemonade

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3 years ago

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(a) Find a 90% confidence interval for the population mean price (per 100 pounds) that farmers in this region get for their wate

Anon25 [30]

Answer:

The margin of error (E) $=0.49$

Step-by-step explanation:

Given,

mean $\bar{x}=6.88$

standard deviation $\sigma=1.90$

sample size $n=41$

$90\% \quad \text{confidence interval}$

Critical value $=\frac{z_\alpha}{2}\quad \quad\quad[\because\;\alpha=1-\text{confidence interval}]$

$=1-0.90$

$\Rightarrow \alpha=0.1$

Critical value $=\frac{z_{0.1}}{2}$

$=z_{0.05}$

$=1.645$

The margin of error (E) $=\frac{z_\alpha}{2} \times\frac{\sigma}{\sqrt{n} }$

$=1.645\times\frac{1.90}{\sqrt{41} }$

$=0.49$

Hence, The margin of error (E) $=0.49$

Complete question is attached in below.

7 0

2 years ago

Lisa sells cars for a salary of 2500 per month plus 2% commission of her total car sales. What should her total of car sales be

Bumek [7]

Answer:

$50,000

Step-by-step explanation:

Let x = car sales

We multiply x by 0.02 since she earns 2% along with the added $2500 so that she can end up with $3500

3500 = 0.02x + 2500

Subtract 2500 from both sides

3500 - 2500 = 0.02x + 2500 - 2500

1000 = 0.02x

Divide both sides by 0.02

1000/0.02 = 0.02x/0.02

x = 50000

3 0

2 years ago