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Vinvika [58]
3 years ago
15

Find the cosine of ∠J.

Mathematics
1 answer:
Luden [163]3 years ago
7 0

Answer:

\cos =  \frac{base}{hypotenuse}  =   \\ \cos(j)  =  \frac{ \sqrt{29} }{ \sqrt{94} }    =   \sqrt{ \frac{29}{94} }  \\ answer =  \sqrt{ \frac{29}{94} }

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Line A passes through the points (1, -1) and (-2, 8).
Viefleur [7K]
The answer to this question will be D
5 0
3 years ago
Leyla drops a penny from a height of 150 m.
gizmo_the_mogwai [7]
When the penny hits the ground, h will = 0.

So:  Set h(t) = 0 = -4.9t^2 + 0t + 150 m

Then 4.9t^2 = 150, and so t^2 = sqrt(150 / 4.9)   =    plus or minus 5.53 sec.

We can use only the positive root, as we're measuring time.

t = 5.5 sec (answer)
8 0
3 years ago
Read 2 more answers
5z3 - 224 - 9z2 + 2<br> What is the degree of the polynomial?<br> I
hoa [83]

Answer:

5{z}^{3}-222-9{z}^{2}5z

​3

​​ −222−9z

​2

Step-by-step explanation:

1 Collect like terms.

5{z}^{3}+(-224+2)-9{z}^{2}5z

​3

​​ +(−224+2)−9z

​2

​​  

2 Simplify.

5{z}^{3}-222-9{z}^{2}5z

​3

​​ −222−9z

​2

​​  

Done

7 0
3 years ago
20liters of mixture contain milk nad water in the ratio 5:3 if 4liters of the mixture are replaced by 4 liters of milk find the
Finger [1]

Answer:

the new ratio milk/water is  14:6  or 7:3

Step-by-step explanation:

milk/water=5/3

milk +water=5+3=8

ratio of milk=5/8  and ratio of water=3/8

if 4 liter removed from mixture then: 20=4= 16 liter

the amount of milk in 16 liter=16*5/8=10 liter of milk

the amount of water in 16 liter=16*3/8= 6 liter

add 4 liter of milk to the mixture: 10+4=14 liter of milk and 6 liter of water

the new ratio milk/water is  14:6  or 7:3

5 0
3 years ago
What am I supposed to do hear im confused
natulia [17]

Answer:

Step-by-step explanation:

In No.1

First you find the total number of girls which is 56-20 =36 girls in total

So to get number of boys who watched tennis 20-13=7 boys watched tennis

To get number of girls who didnt watch you do 36-17=19 girls who watched

Then add o get the totals

No.2

First you get the total number of male 80-47=33 males

Next you find the number of females doing phyisics 33-19=14 females

Next you find the number of females doing chemistry by 47-(18 + 14)=15 females

To get the number of males diong chemistry 21-15=6 males

Number of males doing biology 33-(19+6)=8

Then find the remaining totals

2

No. 2 (b)

Because there is a high number of students doing physics and most of them are female

7 0
3 years ago
Read 2 more answers
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