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3 years ago

When a 6ft pole casts a 4ft shadow, what is the angle of elevation of the sun?

Mathematics

1 answer:

sergejj [24]3 years ago

6 0

Check the picture below

bear in mind, if your calculator is in Degree mode, you'd get an angle in degrees, if in Radian mode, then in radians

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Bethany says that 3x+6+x and 3(x+2) and equivalent expressions. She used substitution to support her answer. Explain what Bethan

Vinvika [58]

She forgot about the final x at the end, because the first expression is 3x+6+x, and the second one is 3(x+2). The second one expands to 3x+6, but it doesn't have the final term at the end.

Also, 3 is not really a factor of x (technically it could be because x in unknown, but in terms of like terms and stuff it isn't) so you can't take a 3 out of x (unless you leave it as 1/3x I guess).

Anyway, yeah she forgot about the final x and therefore the factor she took out is incorrect anyway. She also could've simplified the first expression so that it became 4x + 6

3 0

3 years ago

When the sum of a number and -6 is multiplied by -3, the result is 24

Firlakuza [10]

Number = -14
(-14)+(-6)=-8
(-8)*(-3)=24

4 0

3 years ago

Read 2 more answers

Alisa is making bracelets with leather bands. each bracelet uses 7 3/4 inches of leather banding. she plans to make 4 bracelets.

Artyom0805 [142]

Each bracelet is $7 \frac{3}{4} inches$

Turn it into an improper fraction

Multiply 7 and 4 and add 3 which is over 4 which is $\frac{31}{4}$

Multiply by 4 | for each bracelet being made

$\frac{31}{4} * \frac{4}{1}$ $= \frac{124}{4}$

124÷4=31

Answer:

You need 31 inches to make all the braclets

5 0

4 years ago

Find csc0 and cos0 , where 0 is the angle shown in the figure. Give exact values, not decimal approximations.

solniwko [45]

Answer:

csc(θ) = 1.1662

cos(θ) = 0.5145

Step-by-step explanation:

I attach the image of your question in the picture below

We know the values of the adjacent and opposite cathetus

tan(θ) = Opposite / Adjacent

tan(θ) = 5/3 = 1.666

θ = tan^-1 (5/3)

θ = 59.0362 °

Now that we have the angle, we can easily find the value of the expressions needed

csc(θ) = 1 / sin(θ) = 1/ (0.85749) = 1.1662

cos(θ) = 0.5145

8 0

4 years ago

Need Help With This:

Pavlova-9 [17]

Answer:

230 * (30/100) = 23 * 3 = 69

Step-by-step explanation:

This one can be learned by heart: "what is 30% of 230" means "calculate 30/100 times 230".

5 0

3 years ago

Read 2 more answers