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3 years ago

Carlos invested some money 9 years ago in a savings account that earned a

Mathematics

1 answer:

Ray Of Light [21]3 years ago

7 0

The answer is 769.2592592592593

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What is tan 11 pie/6

tia_tia [17]

Answer:

5.75

Step-by-step explanation:

5 0

3 years ago

Y=x^2+bx+c;(-2,3)

Maksim231197 [3]

<h3>Answer: b = 4 and c = 7.</h3>

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Explanation:

Comparing y = x^2+bx+c to y = ax^2+bx+c, we see that a = 1.

The vertex given is (-2,3). In general, the vertex is (h,k). So h = -2 and k = 3.

Plug those three values into the vertex form below

y = a(x-h)^2 + k

y = 1(x-(-2))^2 + 3

y = (x+2)^2 + 3

Then expand everything out and simplify

y = x^2+4x+4 + 3

y = x^2+4x+7

We see that b = 4 and c = 7.

8 0

3 years ago

3x+(2x-5)=13-2(x+2)how much is this

Dimas [21]

Look at the pictures it explains the equation step by step tell me if you have any questions the answer is at the bottom

3 0

3 years ago

The dataset Restaurant Tips contains data recorded from 157 restaurant bills at a bistro in New York over a two week period and

xz_007 [3.2K]

Answer: ($3.532, $4.166)

Step-by-step explanation:

Given : Significance level : $\alpha: 1-0.90=0.10$

Critical value : $z_{\alpha/2}=1.645$

Sample size : n= 157

Sample mean : $\overline{x}=\$\ 3.849$

Standard deviation : $\sigma= \$\ 2.421$

The confidence interval for population mean is given by :_

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

$\text{i.e. }\$\ 3.849\pm (1.64)\dfrac{2.421}{\sqrt{157}}\\\\\approx\$\ 3.849\pm0.317\\\\=(\$\ 3.849-0.317,\$\ 3.849+0.317)=(\$\ 3.532,\$\ 4.166)$

Hence, the 0% confidence interval for the average tip given at this restaurant = ($3.532, $4.166)

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3 years ago

What is 5(z+4)+5(2-z)

Maru [420]

Answer:

Step-by-step explanation:

5(z+4)+5(2-z) (expand parentheses by distribution)

= z(5) + 4(5) + 2(5) -z(5)

= 5z + 20 + 10 -5z

= 30

4 0

3 years ago