Pls help will mark brainliest

Mathematics

1 answer:

tatuchka [14]2 years ago

5 0

Answer: subtract 10

Step-by-step explanation: 25 - 10 =15

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Solve each system of equation for 3y+x=3 and -2y+5x=15

madam [21]

Answer:

x = 3 and y = 0

Step-by-step explanation:

3y+x=3

-2y+5x=15

Isolate y in 3y + x = 3 :

$y=$ $\frac{3-x}{3}$

Substitute $y = \frac{3-x}{3}$ in -2y + 5x = 15 :

$-2 * \frac{3-x}{3} + 5x = 15$

Simplify the equation :

$\frac{-6+17x}{3} =15$

Isolate x in $\frac{-6 + 17x}{3} = 15$ :

Proving x = 3

Isolate y in $y = \frac{3-3}{3}$ :

Proving y = 0

Your solved system of equations are x being 3, and y being 0.

6 0

3 years ago

Help please? 15 points here

MakcuM [25]

Answer:

64°

Step-by-step explanation:

In circle with center P, AD is diameter.

$\therefore m\angle DPE + m\angle APE = 180\degree \\\therefore (33k-9)\degree + 90\degree = 180\degree \\\therefore (33k-9)\degree = 180\degree -90\degree \\\therefore (33k-9)\degree = 90\degree \\\therefore 33k-9 = 90\\\therefore 33k= 90+9\\\therefore 33k= 99\\\therefore k= \frac{99}{33}\\\therefore k=3\\ m\angle CPD = (20k +4)\degree \\\therefore m\angle CPD = (20\times 3 +4)\degree \\\therefore m\angle CPD =(60+4)\degree \\\therefore m\angle CPD =64\degree \\m\overset {\frown}{CD} = m\angle CPD\\\therefore m\overset {\frown}{CD} = 64\degree$