3 years ago

How to do special triangles

Mathematics

1 answer:

Alexeev081 [22]3 years ago

5 0

Answer:

are you going to give us a example?

Step-by-step explanation:

i cant do anything until you give me a example

i want to help you but...

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3 + x = 18 please help!!!!!!!!!!

Ierofanga [76]

Answer:

X=15

all you have to do is subtract 3 from 18 to get x

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3 years ago

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How many solutions does this equation have 3(x+1)-5=3x-2

4vir4ik [10]

Answer:

Infinite.

Step-by-step explanation:

3(x+1)-5=3x-2

3x+3-5=3x-2

3x-2=3x-2

True for any number.

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3 years ago

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The ratio of boys to girls in the Science Club is 3:5. If there are 60 girls, how many boys are there?

maks197457 [2]

25 boys.

15/3 = 5

5*5=25

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3 years ago

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Suppose you roll a regular 6-faced die. What is the probability of rolling: a 6?, a 2?, and a 4?

Andreyy89

3/6 because there are 6 sides and there are 3 numbers that you want to roll. They are even numbers so if you want to roll half of the numbers but not the other half well you have 3/6

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3 years ago

Without drawing the graphs, find the points of intersection of the lines: a 7x+4y=23 and 8x–10y=19

emmainna [20.7K]

Answer:

(3,0.5)

Step-by-step explanation:

The given system has equations:

$7x + 4y = 23 \\ 8x - 10y = 19$

Let us multiply the second equation by 4 and the first equation by 10.

$70x + 40y = 230 \\ 32x - 40y = 76$

We add both new equations to get:

$102x = 306 \\ x = \frac{306}{102} = 3$

Put x=3 into the first equation and solve for y.

$7(3) + 4y = 23 \\ 21 + 4y = 23 \\ 4y = 23 - 21 \\ 4y = 2 \\ y = \frac{1}{2}$

The point of intersection is the solution to the system of equation which is (3,0.5)

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3 years ago