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3 years ago

Angles R and J are corresponding angles. The measure of R is 50°. What is the measure of J?

Mathematics

1 answer:

rosijanka [135]3 years ago

6 0

B.40 if angles are corresponding that means they add up to be 90 degrees and 50 plus 40 equals 90

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2.6.5 A plant physiologist grew birch seedlings in the green-house and measured the ATP content of their roots. (See Example 1.1

Ilya [14]

Answer:

$(a)\ \bar x = 1.19$

$(b)\ \sigma_x = 0.18$

Step-by-step explanation:

Given

$n = 4$

$x: 1.45\ 1.19\ 1.05\ 1.07$

Solving (a): The mean

This is calculated as:

$\bar x = \frac{\sum x}{n}$

So, we have:

$\bar x = \frac{1.45 + 1.19 + 1.05 + 1.07}{4}$

$\bar x = \frac{4.76}{4}$

$\bar x = 1.19$

Solving (b): The standard deviation

This is calculated as:

$\sigma_x = \sqrt{\frac{\sum(x - \bar x)^2}{n - 1}}$

So, we have:

$\sigma_x = \sqrt{\frac{(1.45 -1.19)^2 + (1.19 -1.19)^2 + (1.05 -1.19)^2 + (1.07 -1.19)^2}{4 - 1}}$

$\sigma_x = \sqrt{\frac{(0.1016}{3}}$

$\sigma_x = \sqrt{0.033867}$

$\sigma_x = 0.18$

4 0

3 years ago

Ben inherited $10,000 and put it all in a stock index fund which promises 7.2% interest compounded quarterly. How much interest

DanielleElmas [232]

Answer:

I live in south Africa so my answer is 280.14

Step-by-step explanation:

7.5 over 100 times by 648.50 (thats how much $10.000 is in south Africa)

=46.69 times by 6

=280.14

7 0

2 years ago

For a regular 15-sided polygon, what is the degree of rotation? pls fast!

sammy [17]

Answer:

24° degrees

Step-by-step explanation:

6 0

3 years ago

Divide the polynomials. Your answer should be in this form p(x)+k/ x-3 where p is a polynomial and k is an integer. x^2+4/x-3=

Makovka662 [10]

Answer:

x + 3 + $\frac{13}{x-3}$

Step-by-step explanation:

Using long division

x + 3 ← quotient

--------------------------

x - 3 | x² + 0x + 4

x² - 3x ↓

------------------------

3x + 4

3x - 9

-----------------------

13 ← remainder

Thus

$\frac{x^2+4}{x-3}$ = x + 3 + $\frac{13}{x-3}$

6 0

3 years ago

You choose a card at random from a standard deck of cards. What is the probability that you do not choose a red 8?

Aleksandr [31]

Answer:

Step-by-step explanation:

6 0

3 years ago