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3 years ago

Choose the ratios for sin X and cos X.

Mathematics

2 answers:

8090 [49]3 years ago

8 0

SinX = √119/11
cosX = 5/12

worty [1.4K]3 years ago

8 0

Sin is opposite/hypotenuse therefore squareroot 119/12 and cos is adjacent/hypotenuse therefore 5/12

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Evaluate 2a + 6b for a = 4 and b = 5.<br>12a+60 =<br>2a + 6b=

galina1969 [7]

Answer:

38 and 108

Step-by-step explanation:

2a + 6b

2 (4) + 6 (5) Plug in values

8+30 = 38

12a + 60

12 (4) + 60 = 108

5 0

3 years ago

Read 2 more answers

A 4 foot tree was planted in 2012 outside a high school. The tree grew continuously by 22% each year from that point. Find out w

Brut [27]

Answer:

The height of the tree in 2020 was of 19.63 feet.

Step-by-step explanation:

Exponential equation for growth:

The exponential equation for the growth of an amount has the following format:

$H(t) = H(0)(1+r)^t$

In which H(t) is the amount after t years, H(0) is the initial amount and r is the growth rate, as a decimal.

A 4 foot tree was planted in 2012 outside a high school.

This means that $H(0) = 4$

The tree grew continuously by 22% each year from that point.

This means that $r = 0.22$

Find out what the height of the tree was in 2020.

2020 is 2020 - 2012 = 8 years after 2012, so this is H(8).

$H(t) = H(0)(1+r)^t$

$H(t) = 4(1+0.22)^t$

$H(4) = 4(1.22)^t$

$H(4) = 4(1.22)^8 = 19.63$

The height of the tree in 2020 was of 19.63 feet.

6 0

3 years ago

Is 15,36,39 a right triangle

NeTakaya

Answer:

Yes, is a right triangle

Step-by-step explanation:

To know if you can build a right triangle with those sides we have to make the following equality

h² = l1² + l2²

The hypotenuse is always the longest side so it should be 39

we check the equality of the equation

39² = 15² + 36²

1521 = 225 + 1296

1521 = 1521

Equality was fulfilled so it is a right triangle

7 0

3 years ago

Solve the system of linear equations below y=-2x+19 y=x+7

Julli [10]

<span>A) y=-2x+19
B) y=x+7 Multiplying B) by -1
B) -y = -x -7 then adding it to A)
A) y = -2x + 19
3x = 12
x = 4
y = 11

</span>

3 0

3 years ago

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Decide whether the table represents a linear or exponential function circle with a linear exponential then write the function fo

Sergio [31]

This function starts at $(0,3)$ , so we have $f(0)=3$ .

Then, every time $x$ increments by 1, $y$ doubles. This is typical of exponential functions. In linear functions, every time $x$ increments by 1, $y$ increments by a fixed amount (the slope of the function).

So, this is an exponential function, and the equation is

$f(x)=3\cdot 2^x$

3 0

3 years ago