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3 years ago

Solve for θ if sinθ = 0.45. Round answer to the nearest degree.

Mathematics

1 answer:

marysya [2.9K]3 years ago

7 0

If you look in a table of sines, you find that sin(θ) = 0.45 corresponds to an angle of about 26°45', so is nearest to 27°.

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If i have 20 cookies and i take 10 away, how much do i have left

pentagon [3]

Answer:

Step-by-step explanation:

20 - 10 = 10

8 0

3 years ago

Read 2 more answers

Help with 2 show work

Wittaler [7]

A. from 67.86 all the way to the end. (67.86 is not filled)
b. $67.86,
$80.00,
$70.00(values equal to or greater than $67.86.)
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2 years ago

The length of a rectangle is the sum of the width and 4. The area of the rectangle is 32

Sauron [17]

Answer:

The width of rectangle w = 4 units

Step-by-step explanation:

We are given:

Width of rectangle = w

Length of rectangle = w+ 4

Area of rectangle = 32 units

We need to find width of the rectangle

The formula used is: $Area\:of\:rectangle=Length\times Width$

Putting values and finding width of rectangle

$Area\:of\:rectangle=Length\times Width\\32=(w+4)\times w\\32=w^2+4w\\w^2+4w-32=0$

We need to solve this quadratic equation to find width (w)

We will use factorisation and break the middle term.

$w^2+4w-32=0\\w^2+8w-4w-32=0\\w(w+8)-4(w+8)=0\\(w-4)(w+8)=0\\w-4=0\:or\:w+8=0\\w=4\:or\:w=-8$

Since width of rectangle can't be negative, so rejecting w=-8

Therefore, the width of rectangle w = 4 units

4 0

2 years ago

For the function f(x)=5x^2-7x, what is f(-3)?

Ainat [17]

Answer:

Step-by-step explanation:

f(x)=5x^2-7x

substitute x to 3

f(3)=5(3)^2-7(3)

f(3)=5(9)-21

f(3)=45-21

f(3)=24

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2 years ago

Find the squares of (x+3)<br>

d1i1m1o1n [39]

Answer:

${x}^{2} + 6x + 9 \\$

Step-by-step explanation:

${(x + 3)}^{2} \\ (x + 3)(x + 3) \\ x(x + 3) + 3(x + 3) \\ {x}^{2} + 3x + 3x + 9 \\ {x}^{2} + 6x + 9 \\$

5 0

2 years ago