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3 years ago

Identify the range of the function shown in the graph.

Mathematics

1 answer:

Mariana [72]3 years ago

8 0

Answer:

-10?

Step-by-step explanation:

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If f(x) = 2x2 + 1, what is f(x) when x = 3? O 1 O 7 O 13 O 19

Slav-nsk [51]

Answer:

Step-by-step explanation:

f(x) = 2x^2 + 1

Let x= 3

f(3) = 2 * (3)^2 +1

Exponents first

= 2 * 9+1

Then multiply

= 18+1

Add

= 19

6 0

3 years ago

Which expression is equivalent to this expression? (-5cd-4)(2cd2)2

Vlad1618 [11]

Answer:

-20c^2 d^3 - 16cd^2

Step-by-step explanation:

4 0

3 years ago

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A cookie recipe required 1 1/3 cups of sugar. If Mrs. Lee has 7 cups of sugar, how many recipes of cookies can she bake? Need an

Vitek1552 [10]

$\frac{21}{3} = 7 \: cups$

$\frac{21}{3} ÷ \frac {4}{3} = 5 \frac{1}{3}$

She can make 5 batches of cookies and have

$\frac{1}{3} \: cups$

left

3 0

3 years ago

Find the sum: ( m 3 + 4n) + (3m – 2n+6)

sertanlavr [38]

Answer:

i would belive its 12 :D

Step-by-step explanation:

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3 years ago

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A random sample of 1000 registered voters in Flagstaff found 760 registered voters who support immigration reform. Find a 95% co

dusya [7]

Answer: $(0.7335,\ 0.7865)$

Step-by-step explanation:

Given : A random sample of 1000 registered voters in Flagstaff found 760 registered voters who support immigration reform.

sample size : n= 1000

sample proportion: $\hat{p}=\dfrac{760}{1000}=0.76$

Critical value for 95% confidence interval = $z_{\alpha/2}=1.96$

Confidence interval :

$\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\\\\=0.76\pm(1.96)\sqrt{\dfrac{0.76(1-0.76)}{1000}}\\\\=0.76\pm0.0264708866493\\\\\approx0.76\pm0.0265\\\\=(0.76-0.0265,\ 0.76+0.0265)=(0.7335,\ 0.7865)$

Hence, the 95% confidence interval for the true percent of registered voters in Flagstaff who support immigration reform: $(0.7335,\ 0.7865)$

6 0

3 years ago