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3 years ago

Could someone help me please

Mathematics

1 answer:

astraxan [27]3 years ago

6 0

A: tracy's family has greater valiablity because put the number in order

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If y varies directly as x and y=3 when x=10, find x when y=8 Please, somebody, I need help

Kryger [21]

Answer:

26.6

Step-by-step explanation

3=10*k

3/10=.3

y=8

8=.3*x

8/.3=26.6

8 0

2 years ago

In triangle abc, m of acb = 90, cd is perpendicular to ab , m of acd is 60. and bd is 5 cm. find ad

weeeeeb [17]

Let us draw a picture to make the things more clear.

Attached is the image.

We have been given that

$\angle acd = 60 ^{\circ}$

Therefore, we have

$\angle dcb =90- 60= 30 ^{\circ}$

Now, in triangle bcd, we have

$\tan30 = \frac{5}{cd}\\
\\
\frac{1}{\sqrt 3}=\frac{5}{cd}\\
\\
cd=5\sqrt 3$

Now, in triangle acb, we have

$tan 60 = \frac{ad}{5\sqrt3} \\
\\
\sqrt 3= \frac{ad}{5\sqrt3}\\
\\
ad= 5\sqrt3 \times \sqrt 3\\
\\
ad= 5\times 3\\
\\
ad=15$

Thus, ad is 15 cm.

4 0

2 years ago

Valus of m is :m+2m-6= -12+2m

nata0808 [166]

M + 2m - 6 = -12 + 2m
3m - 6 = -12 + 2m
      +6     +6
--------------------------------
3m = -6 + 2m
-2m       -2m
-----------------------
1m = -6
/1      /1

m = -6

7 0

2 years ago

Read 2 more answers

There are over 2700 species of snakes in the world over 600 are venomous Express the fraction of species that are not venomous a

Andre45 [30]

You do 600 divided by 2700 and you end up with 22/100 or 0.22 as a decimal. So if 0.22 or 22/100 are venimous then 78/100 or 0.78 are non venimous. I understand its a bit confusing and i can simplify it for you but still I hope this helps :)

6 0

3 years ago

Vincent is watching a movie that last one hour and 37 minutes.he has watched 52 minutes so far how many minutes are left in the

Neporo4naja [7]

<h3>given:</h3>

lasts= 1 hour 37 minutes

watched= 52 mins

how many minutes left in the movie.

<h3>solution:</h3>

to find the time left just find the difference.

$52 - 37$