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2 years ago

60% of 145 is what number.

Mathematics

2 answers:

mina [271]2 years ago

8 0

the answer is 87 60% or 145 = 87

Hoochie [10]2 years ago

8 0

Answer: 261

To find the answer follow these steps:
1: To find the number or 100% find 10% of 145 (14.5) and subtract it from 145 (you will get 130.5.
- We do this because going down 10% you can get to 50% of the number then easily multiply by 2.
2: Now multiply 130.5 by 2 and you will get 261.

Hope this helps!

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Which of the following indicates the division property of equality when solving –12x = 48?

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Find the exact values of sin2 θ for cos θ = 3/18 on the interval 0° ≤ θ ≤ 90°

mote1985 [20]

Answer:

$sin(2\theta)=\frac{\sqrt{35} }{18}$

Step-by-step explanation:

Recall the formula for the sine of the double angle:

$sin(2\theta)=2*sin(\theta)*cos(\theta)$

we know that $cos(\theta)=\frac{3}{18}$ , and that $\theta$ is in the interval between 0 and 90 degrees, where both the functions sine and cosine are non-negative numbers. Based on such, we can find using the Pythagorean trigonometric property that relates sine and cosine of the same angle, what $sin(\theta)$ is:

$cos^2(\theta)+sin^2(\theta)=1\\sin^2(\theta)=1-cos^2(\theta)\\sin(\theta)=\sqrt{1-cos^2(\theta)} \\sin(\theta)=\sqrt{1-(\frac{3}{18} )^2}\\sin(\theta)=\sqrt{1-\frac{9}{324} }\\sin(\theta)=\sqrt{\frac{324-9}{324} }\\sin(\theta)=\sqrt{\frac{315}{324} }\\\\sin(\theta)=\frac{3}{18}\sqrt{35 }$

With this information, we can now complete the value of the sine of the double angle requested:

$sin(2\theta)=2*sin(\theta)*cos(\theta)\\sin(2\theta)=2*\frac{3}{18} \,\sqrt{35} \,\frac{3}{18}\\sin(2\theta)=\frac{2*3*3}{18*18}\,\sqrt{35} \\sin(2\theta)=\frac{\sqrt{35} }{18}$

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2 years ago

The position function of a particle in rectilinear motion is given by s(t) = 2t3 – 21t2 + 60t + 3 for t ≥ 0 with t measured in s

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When the direction is reversed velocity = 0

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At t = 2 acceleration = -18 ft s-2
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3 years ago

PLEASE HELP!! What is the value of x+y?

svlad2 [7]

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1 year ago

Read 2 more answers

Sovle for x. 2x + 6 = - r - 15

Igoryamba

Answer:

$x = \frac{-r - 21}{2}$

Step-by-step explanation:

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Remember to do the opposite of PEMDAS.

PEMDAS =

Parenthesis

Exponents (& Roots)

Multiplication

Division

Addition

Subtraction

First, subtract 6 from both sides:

2x + 6 (-6) = -r - 15 (-6)

2x = -r + (-15 - 6)

2x = -r + (-21)

2x = - r - 21

Next, divide 2 from both sides:

$\frac{2x}{2} = \frac{-r - 21}{2}$

$x = \frac{-r - 21}{2}$

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2 years ago