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2 years ago

Use the substitution method to solve the system of equations. Choose the

Mathematics

2 answers:

malfutka [58]2 years ago

7 0

Answer:

5,8

Step-by-step explanation:

y=4x-2-----(i)

y=x+13----(ii)

Equating equation i and ii we get,

$4x - 2 = x + 13$

$4x - x = 13 + 2$

$3x = 15$

$x = 3$

$substitutin \: the \: value \: of \: x \: in \: equation \: (i)$

$y = 4x - 2$

$y = 4 \times 5 - 2$

$y = 20 - 2$

$y = 18$

Marks this as a brainest answer ok.

elixir [45]2 years ago

5 0

Answer:

Step-by-step explanation:

just plug each coordinates

5=x

18=y

if its tru for both then thats the answer

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What is the slope of the line that passes (-11,2) and (-1, -13). Plz show your work.

ANEK [815]

Answer:

Slope = -3/2 or -1.5

Step-by-step explanation:

The Formula for slope is (The picture linked)

So, $\frac{-13-2}{-1-(-11)}$

Which is equal to... $\frac{-15}{10}$ when simplified

Which is equal to $\frac{-3}{2}$ or -1.5 which is the slope

7 0

2 years ago

You are offered the following gamble based on coin flips. If the first heads occurs on the first flip, you get $2. If the first

Andrews [41]

Answer:

infinity

Step-by-step explanation:

a) the expected value of this gamble in dollars is Infinity

i.e

expected value = $\frac{1}{2}*2 + \frac{1}{4}*4 + \frac{1}{8}*8 + \frac{1}{16}*16 + ... + \to \infty (infinty) \\$

= $1+1+1+1+1 + ... = \infty$

When offered, most people say they would pay only less than $10 to play this game.

What are two reasons why people are willing to pay so much less than the expected value?

These people are ready to pay less than $10 to play this game due to the fact that people usually overlook the unlikely event when making decisions. In a bid to that logic, they gamble in order to double their amount of money and the probability that heads may never come is ignored by these people and they may hope for a likely event i.e a head every time they play the game.

Also, the expected value is so humongous that if and only if that the first head appears after a long series of tails which is very less certain to occur, because mostly people would think that on an average the length of a series of tails ( or heads) is somewhat near 10 or so, but definitely infinity.

3 0

3 years ago

Stan worked 4 years less than Marco.This year Stan has worked 29 years.If b is how long Marco worked, the equation b - 4 = 29 re

MA_775_DIABLO [31]

Answer:

Add 4 on both sides.

In the equation there is a -4.

If -4+4=0, that is how you would get rid of the -4.

But, you need to add 4 to 29 to really get rid of the -4.

So, 29+4 is 33.

b=33

6 0

3 years ago

A square with side lengths of 3 cm is reflected vertically over a horizontal line of reflection that is 2 cm below the bottom ed

oksian1 [2.3K]

Answer:

a) 4 cm

b) 5 cm

c) 10 cm

Step-by-step explanation:

The side lengths of the reflected square are equal to the original, and the distance from the axis(2) also remains the same. From there, it is just addition.

Hope it helps <3

5 0

2 years ago

Help me please urgent

Lilit [14]

The inscribed angle is always half of the central angle.
So 60÷2=30

6 0

2 years ago