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2 years ago

Find x on the triangle

Mathematics

2 answers:

Nastasia [14]2 years ago

4 0

The answer is C hope it helps :))))

iragen [17]2 years ago

3 0

Answer:

(c)

Step-by-step explanation:

Using the cosine ratio in the right triangle

cos42° = $\frac{adjacent}{hypotenuse}$ = $\frac{x}{12}$

Multiply both sides by 12

12 × cos42° = x, hence

x ≈ 8.9 → (c)

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An irregular parallelogram rotates 360° about the midpoint of its diagonal. How many times does the image of the parallelogram c

Ad libitum [116K]

Answer:

The correct options is A.

Step-by-step explanation:

The each diagonal of an irregular parallelogram divides the parallelogram in two equal and congruent parts. The diagonal bisects each other.

It means, if a irregular parallelogram rotates 180° about the midpoint of its diagonal, then the image of the parallelogram coincide with its preimage during the rotation.

If a irregular parallelogram rotates 360° about the midpoint of its diagonal, then the image of the parallelogram coincide 2 times with its preimage during the rotation.

Therefore the correct option is A.

6 0

2 years ago

There are two formulae you can use to calculate the number of apple trees and the number of conifer

Leno4ka [110]

9514 1404 393

Answer:

n = 8

Step-by-step explanation:

"By inspection" is an appropriate method.

We are asked to compare the expressions

n·n

8·n

and find the value(s) of n that makes them equal. <em>By inspection</em>, we see that n=8 will make these expressions equal. We also know that both expressions will be zero when n=0.

More formally, we could write ...

n^2 = 8n . . . . the two formulas give the same value

n^2 -8n = 0 . . . . rearrange to standard form

n(n -8) = 0 . . . . . factor

Using the zero product rule, we know the solutions will be the values of n that make the factors zero. Those values are ...

n = 0 . . . . . makes the factor n = 0

n = 8 . . . . . makes the factor (n-8) = 0

Generally, we're not interested in "trivial" solutions (n=0), so the only value of n that is of interest is n = 8.

A lot of times, I find a graphing calculator to be a quick and easy way to find function argument values that make expressions equal.

5 0

3 years ago

HELPPPPPPPPPPPP PLEASEEEE?

Neporo4naja [7]

Answer: V≈56.55

Step-by-step explanation:

V=πr2h

3 = radius

2=height

Fill in the formula = V=πr2h=π·32·2≈56.54867

5 0

2 years ago

PLEASE help me with this equation

Brilliant_brown [7]

Answer:

1/25

Step-by-step explanation:

I worked out the equation!

3 0

3 years ago

Read 2 more answers

Which expression is equivalent to 42 + 30?

Zanzabum

42+30= 72
6 (36+24)=120 not equal
7 (6+30)=252 not equal
6 (7+5)=72 equal
5 (37+35)= 360 not equal

8 0

3 years ago