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2 years ago

13

Need help solving this

1 answer:

ira [324]2 years ago

7 0

Answer:

x ≈ 41.6°

Step-by-step explanation:

Using the tangent ratio in the right triangle

tan x = $\frac{opposite}{adjacent}$ = $\frac{JK}{KL}$ = $\frac{80}{90}$ = $\frac{8}{9}$ , then

x = $tan^{-1}$ ( $\frac{8}{9}$ ) ≈ 41.6° ( to the nearest tenth )

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I need some help please What's |5| + |–7|?

luda_lava [24]

Answer:

<h3>hello there!</h3>

$\left|5\right|+\left|-7\right|$

$rule =a,\:a\ge 0$

$|5|=5$

$\mathrm{Apply\:absolute\:rule}:\quad \left|-a\right|=a$

$\left|-7\right|=7$

$5+7=$

$12$

hope this helps you..

5 0

3 years ago

According to scientific research, the probability that a person between the ages of 20 and 25 having high blood pressure, is onl

boyakko [2]

Answer:

<h2>The probability is ${\frac{83}{100} }^9 \times \frac{17}{100}$ + ${\frac{83}{100} }^8 \times {\frac{17}{100} }^2$ + ${\frac{83}{100} }^{10}$ .</h2>

Step-by-step explanation:

The probability of having high blood pressure is 17%.

We need to find the probability of 2 or fewer have high blood pressure.

Possibility 1: No one have high blood pressure.

The probability is ${\frac{100 -17}{100} }^{10} = {\frac{83}{100} }^{10}$ .

Possibility 2: Only one have high blood pressure.

The probability is ${\frac{83}{100} }^9 \times \frac{17}{100}$ .

Possibility 3: 2 among the 10 have the high blood pressure.

${\frac{83}{100} }^8 \times {\frac{17}{100} }^2$ .

Any of the possibilities can happen.

Hence, the required probability is ${\frac{83}{100} }^9 \times \frac{17}{100}$ + ${\frac{83}{100} }^8 \times {\frac{17}{100} }^2$ + ${\frac{83}{100} }^{10}$ .

4 0

3 years ago

PLEASE HELP NEED IT ASAP!!! FOR A UNIT TEST!!!

fiasKO [112]

Y=1/2x+7 because you flip the sign and the numbers on the fraction for the slope then solve for the y-not

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2 years ago

Read 2 more answers

I need help with this question ASAP.

myrzilka [38]

Answer:

a gas in a rigid container has a pressure of 632 torrs and a temperature of 45 celsius. The pressure has increased to 842 torrs. What is the new temperature of the gas

3 0

3 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! I CANNOT RETAKE THIS!!

vaieri [72.5K]

x²(x - 4)(2x + 5) = 0

x² = 0 or x - 4 = 0 or 2x + 5 = 0

√x = √0 or x = 4 or 2x = -5

x = 0 x = $-\frac{5}{2}$

Answer: 0, 4, $-\frac{5}{2}$

8 0

3 years ago