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2 years ago

Can you help me solve 4x - 15 = 17 - 4x

Mathematics

1 answer:

seraphim [82]2 years ago

3 0

$4x-15 = 17-4x\\\\\implies 4x +4x = 17 +15\\\\\implies 8x = 32\\\\\implies x = \dfrac{32} 8\\\\\implies x = 4$

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In a card game, 5 cards are drawn from a deck of 52 cards. What is the probability that three nines and two tens are drawn?

eduard

Answer:

It's (4C3)*(4C2)/52C5

8 0

3 years ago

The Pythagorean Identity states that:

Oksi-84 [34.3K]

Answer:

1/2

Step-by-step explanation:

According to pythagoras theorem;

(sinx)²+(cosx)² = 1

Given that sinФ = √3/2

Substitute into the formula

(√3/2)²+(cosx)² = 1

3/4+(cosx)² = 1

(cosx)² = 1 - 3/4

(cosx)² = 1/4

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Hence the value of cosФ is 1/2

7 0

2 years ago

Help Ratios Picture added!!

tangare [24]

Answer:
25

Explanation:
A : B
4 : 5
20 : 25
Multiply the sides by 5

3 0

2 years ago

Can someone tell me what x= to and y=?

jeka57 [31]

Answer:

x = 112

y = 76

Step-by-step explanation:

x + 68 = 180

x = 180 - 68

x = 112

y = 76 (Because of alternate interior angles)

3 0

2 years ago

What is the value of x?<br> Enter your answer in the box

ella [17]

Answer:

Step-by-step explanation:

This is an equilateral triangle, the 3 sides are equal.

Also, that means 3 angles are equal.

Given the 2 angles, we can say:

2x - 4 = 5y

Also, the angle is "5y" as they are equal.

Sum of 3 angles of a triangle is 180, so we can write:

2x - 4 + 5y + 5y = 180

2x + 10y - 4 = 180

2x + 10y = 184 [Equation 2]

From the first equation we can solve for y:

$2x - 4 = 5y\\y=\frac{2x-4}{5}$

Now, we plug this into Equation 2 and find x:

$2x+10y=184\\2x+10(\frac{2x-4}{5})=184\\2x+4x-8=184\\6x=192\\x=32$

So x is 32

3 0

3 years ago