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Viefleur [7K]
3 years ago
8

How do I set this up?

Mathematics
1 answer:
Sholpan [36]3 years ago
5 0

I am pretty sure you set this equation up correctly. All you need to do is calculate the approximate value, which is -2.91256.

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R − ns × 12<br><br><br> for n = 2, r = 9, and s = 3.
valentina_108 [34]

Answer:

-63

Step-by-step explanation:

9 - (2×3) × 12

9 - (6 × 12)

9 - 72

= -63

7 0
3 years ago
Read 2 more answers
Help me please<br>I want the step by step explanation!!​
DiKsa [7]

Answer: AB=√17, AD=√98,6

Step-by-step explanation:

AB²=BC²+AC²-2*BC*AC*cosACB

AB²=5²+4²-2*5*4*0,6=25+16-24=17

AB=√17

AD²=AC²+CD²-2*AC*CD*cosACD

cosACD=cos(180°-ACB)=-cosACB

AD²=4²+7²-2*4*7*(-0,6)=16+49+33,6=98,6

AD=√98,6

4 0
3 years ago
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A test for marijuana usage was tried on 170 subjects who did not use marijuana. The test result was wrong 8 times.a. Based on th
motikmotik

Answer:

a. 0.047

b. Unlikely.

Step-by-step explanation:

a. The probability of a test result being wrong for a person not using mrijuana  = 8 / 170 = 0.047.

b. As the probability for a wrong result is < 0.05 we can say that the test is unlikely to be wrong.

6 0
3 years ago
6. In right triangle ABC, mZC=3y-10,
lorasvet [3.4K]

Answer:

scalene

Step-by-step explanation:

step 1

Find the value of y

we know that

The sum of the interior angles in a triangle must be equal to 180 degrees

In this problem

m∠A+m∠B+m∠C=180°

substitute the given values

90\°+(y+40)\°+(3y-10)\°=180\°

Solve for y

4y+120=180

4y=180-120

4y=60

y=15

step 2

<em>Find the measure of angle B</em>

m∠B=(y+40)°

substitute the value of y

m∠B=(15+40)=55°

step 3

<em>Find the measure of angle C</em>

m∠C=(3y-10)°

substitute the value of y

m∠C=(3(15)-10)=35°

The three interior angles are different

so

The three sides of the ABC triangle will also be different

therefore

The right triangle ABC is scalene

6 0
3 years ago
Can u please answer all three and in 20-30 minutes please or quicker if u can please I just not understanding the math they are
Jlenok [28]

18).  16:80 is the ratio but in simplest form is; 5:0

19).   36:54 is the ratio but in simplest form is; 2:3

20).   12:24 is the ratio but in simplest form is; 1:2

hope that helps:D

5 0
3 years ago
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