In right triangle XYZ, ∠Y is the right angle and m∠X = 60°. If YZ = 4, what is XY?

Mathematics

1 answer:

Assoli18 [71]2 years ago

6 0

The answer is C

it’s c beach add the 60
is equivalent to 160 degrees which you take that and divide by the cofficcent

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Rebecca has 45 coins, all nickels and dimes. The total value of the coins is $3.60. How many

kvv77 [185]

Answer:

Rebecca has 18 nickels and 27 dimes

Step-by-step explanation:

Let x be the number of nickels Rebecca has, then 45-x is the number of dimes she has.

The total value of Rebecca's coins is $3.60.

1 nickel - 5 cents

x nickels - 5x cents

1 dime - 10 cents

45-x dimes - 10(45-x) cents

Total x nickels and 45-x dimes is 5x+10(45-x) cents that is $3.60=360 cents. So,

5x+10(45-x)=360

5x+450-10x=360

5x-10x=360-450

-5x=-90

5x=90

x=18

45-x=45-18=27

4 0

3 years ago

If Jonny had 3 apples and he gave 1 away how much does he have

stiv31 [10]

3 apples minus 1 equals 2 -=

7 0

2 years ago

Pls help I’ll mark u brain

Alex17521 [72]

Answer:

Step-by-step explanation:

It would be A,

As we can see, p*c =60 for every value in the chart. We can rearrage this to get c=60/p

<em>I hope this helped! :)</em>

6 0

3 years ago

Find dy/dx for 4 - xy = y^3

storchak [24]

Answer:

$\frac{dy}{dx}=-\frac{y}{3y^2+x}$

Step-by-step explanation:

4-xy=y^3

dy/dx=?

$\frac{d(4-xy)}{dx}=\frac{d(y^3)}{dx}\\ \frac{d(4)}{dx}-\frac{d(xy)}{dx}=3y^{3-1}\frac{dy}{dx}\\ 0-(\frac{dx}{dx}y+x\frac{dy}{dx})=3y^2\frac{dy}{dx}\\ -(1y+x\frac{dy}{dx})=3y^2\frac{dy}{dx}\\ -(y+x\frac{dy}{dx})=3y^2\frac{dy}{dx}\\ -y-x\frac{dy}{dx}=3y^2\frac{dy}{dx}$