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3 years ago

The temperature and Vancouver Yesterday was 15° today it is -5° how much did the temperature decrease?

Mathematics

1 answer:

Crazy boy [7]3 years ago

3 0

Answer:

Step-by-step explanation:

All I did was add 15 and 5 which equals 20 which is the correct answer

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What do variables and functions have in common

klemol [59]

Answer:

A function is a mathematical relationship in which the values of a single dependent variable are determined by the values of one or more independent variables. Function means the dependent variable is determined by the independent variable(s).

Step-by-step explanation:

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3 years ago

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Use the graph below to answer the following question:

Harlamova29_29 [7]

2 should be your answer

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3 years ago

If sin a= 12/13 and tan B 8/15 and angles a and b are in qundrant 1 find the value of tan (a+b)

natali 33 [55]

Answer:

The value of Tan (a + b) is $\frac{-220}{21}$ .

Step-by-step explanation:

Given as :

Tan b = $\frac{8}{15}$

Sin a = $\frac{12}{13}$

∵Sin Ф = $\dfrac{\textrm perpendicular}{\textrm Hypotenuse}$

So, $\dfrac{\textrm perpendicular}{\textrm Hypotenuse}$ = $\frac{12}{13}$

Now, Base² = Hypotenuse² - Perpendicular²

Or, Base² = 13² - 12²

Or, Base² = 169 - 144

Or, Base² = 25

∴ Base = $\sqrt{25}$ = 5

And Tan Ф = $\dfrac{\textrm perpendicular}{\textrm Base}$

Or, Tan a = $\frac{12}{5}$

Now, Tan (a + b) = $\dfrac{Tan a + Tan b}{1- Tan a Tanb}$

Or, Tan (a + b) = $\frac{\frac{12}{5}+\frac{8}{5}}{1-(\frac{12}{5}\times \frac{8}{15})}$

or, Tan (a + b) = $\frac{\frac{36+8}{15}}{\frac{75-96}{75}}$

or, Tan (a + b) = $\frac{\frac{44}{15}}{\frac{-21}{75}}$

Or, Tan (a + b) = $\frac{-220}{21}$

Hence The value of Tan (a + b) is $\frac{-220}{21}$ . Answer

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3 years ago

A researcher is trying to show evidence for extra-sensory perception (ESP). She performs a test in which the subject is asked 10

Nuetrik [128]

Answer:

The answer is "0.0547".

Step-by-step explanation:

$P(Correct) = 0.50\\\\n = 10\\\\x = 8$

Using the binomial distribution:

$\to P(x,n) = n_{C}_x \times p^x \times (1-p)^{(n-1)}\\\\\to P(x \geq 8) = 1 - P( \leq 7)$

Calculating the excel formula:

$=BINOM.DIST(7,10,0.50,TRUE)$

$\to P(x \geq 8) = 1 - 0.9453\\\\ \to P(x \geq 8) = 0.0547$

6 0

2 years ago

PLEASE HELP ASAP<br><br> 2(x+10)+5(4x-11)

Tatiana [17]

Answer:

22x - 35

Step-by-step explanation:

Expand 2(x+10)

2x+20

Expand 5(4x-11)

20x-55

Simplify:

22x-35

8 0

3 years ago

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