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3 years ago

15

Find b. Round to the nearest tenth.

2 answers:

Svetradugi [14.3K]3 years ago

5 0

Find Angle B: B = 180 - (82+55) = 43. Then apply the law of sines:

b 8 cm
--------- = ----------
sin 43 sin 55
(sin 43)(8 cm)
Solving for b, we get b = ------------------- = 6.66, or 6.7 (cm, to the nearest tenth).
sin 55

vlabodo [156]3 years ago

3 0

This is 90 degrees because we have to have an right angle and a right angle is 90 degrees

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Select the correct answer. Sean and Colleen are raking leaves in their yard. Working together, they can clear the yard of leaves

Lera25 [3.4K]

Answer:

40 minutes

Step-by-step explanation:

Let c represent the number of minutes it would take colleen to finish the job when he is working alone. Hence, it can be represented by the equation:

$\frac{1}{c}+\frac{1}{c+20} =\frac{1}{24} \\\\Finding\ the\ L.C.M\ of\ the\ fraction\ to\ get\ 24c(c+20)\ as\ the\ L.C.M.\\Multiply\ the\ whole\ equation\ by\ 24c(c+20):\\\\\frac{1}{c}(24c(c+20))+\frac{1}{c+20}(24c(c+20)) =\frac{1}{24}(24c(c+20)) \\\\24c+480+24c=c^2+20c\\\\48c+480=c^2+20c\\\\c^2+20c-48c-480=0\\\\c^2-28c-480=0$

Solving the quadratic equation to get c gives:

c = -12 and c = 40

Since the time cannot be negative, hence c = 40 minutes.

It would take colleen 40 minutes to clear the yard of leaves alone

6 0

3 years ago

ricardo purchased a bunk bed for his children fora sale price of $276.25. The sale price was 65% of the original price. Calculat

nikklg [1K]

Use the formula S=P-PD

S is sale price, original price is P, and PD is discounted percent,

276.25=P-P(.65), I turned the percent into a decimal.

276.25=P(1-.65)

276.25=P(1-.65)

276.25=P(.35)

Now cross multiply.

$\frac{276.26}{.35}=\frac{P(.35)}{.35}\\\\P=\frac{276.26}{.35}=789.31$

Hope this helps, now you know the answer and how to do it. Stay healthy and safe and HAVE A BLESSED AND WONDERFUL DAY! :-)

- Cutiepatutie ☺❀❤

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3 years ago

ANSWER CORRECTLY FOR BRAINLEAST

ANEK [815]

Answer:

86.9

Step-by-step explanation:

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3 years ago

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Two fair six-sided dice are rolled. What is the probability that the sum of the numbers rolled is either 7 or 11?

Llana [10]

There is 36 ways the dice come up, 6 for each dice. thats 8/36 or 2/9. :)

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4 years ago

Which expression is equal to (x-3)(x-2)/(x+3)(x-3)

Tju [1.3M]

Answer:

$\frac{x-2}{x+3}$

Step-by-step explanation:

given $\frac{(x-3)(x-2)}{(x+3)(x-3)}$

the factor (x - 3) can be cancelled from the numerator/ denominator leaving

$\frac{x-2}{x+3}$

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3 years ago