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2 years ago

Solve for the value of r. (8r+6)° (9r-7)

Mathematics

1 answer:

lukranit [14]2 years ago

8 0

Answer:

r = 13

Step-by-step explanation:

these angles are vertical and are congruent

8r + 6 = 9r - 7

6 = r - 7

13 = r

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Solve: √x=25. Explain how you found your answer. Explain how to check your work.

Zigmanuir [339]

$\sqrt{x} = 25 \: (square \: both \: side) \\ {( \sqrt{x} )}^{2} = {25}^{2} \\ x = 625 \\ test \\ \\ \sqrt{625} = 25$

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2 years ago

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Evgesh-ka [11]

Answer:

3) 0 ≤ y ≤ 100

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3 years ago

A recent survey found that 7575% of all adults over 50 wear glasses for driving. In a random sample of 4040 adults over 50, wh

malfutka [58]

Answer:

Mean = 30

standard Deviation = 2.74

Step-by-step explanation:

Formula

mean = np

Standard Deviation = $\sqrt{npq}$

from the question = 40

P = 75% or 0.75

q = 1 - p = 1 - 75% or 1 - 0.75

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5 0

2 years ago

Lim x approaches 0 (1+2x)3/sinx

jok3333 [9.3K]

Interpreting your expression as

$\dfrac{3(1+2x)}{\sin(x)}$

when $x$ approaches zero, the numerator approaches 3:

$3(1+2x) \to 3(1+2\cdot 0) = 3(1+0) = 3\cdot 1 = 3$

The denominator approaches 0, because $\sin(0)=0$

Moreover, we have

$\displaystyle \lim_{x\to 0^-} \sin(x) = 0^-,\quad \displaystyle \lim_{x\to 0^+} \sin(x) = 0^+$

So, the limit does not exist, because left and right limits are different:

$\displaystyle \lim_{x\to 0^-} \dfrac{3(1+2x)}{\sin(x)}= \dfrac{3}{0^-} = -\infty,\quad \displaystyle \lim_{x\to 0^+}\dfrac{3(1+2x)}{\sin(x)}= \dfrac{3}{0^+} = +\infty$

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3 years ago

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Marta_Voda [28]

12 x 11 = 132

3*12=36

132+36 = 168 square feet

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3 years ago

Solve for the value of r. (8r+6)° (9r-7)​

Solve for the value of r. (8r+6)° (9r-7)