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3 years ago

Please help. This is due 1st period

Mathematics

1 answer:

faust18 [17]3 years ago

7 0

Just substitute the value x into the equation y=2x

y = 2x
y = 2(-1)
y = -2

use the same method for the rest

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The triangles are similar. What is the value of x? Enter your answer in the box. X=

Aleks04 [339]

Answer:

x=16

Step-by-step explanation:

5times 4=20

3times 4=12

4times 4=16

4 0

3 years ago

Riley and Erik have earned a total of 135 tokens to buy items in the school store. The ratio of the number of tokens that Riley

lisabon 2012 [21]

Answer:

Riley has 72 tokens

Step-by-step explanation:

System of Equations

We have two conditions for the tokens Riley and Erik have earned. Let's call x and y to the number of tokens of Riley and Erik respectively. The first condition states that

$x+y=135$

Solving for y

$y=135-x$

The second condition is that the ratio of the number of tokens that Riley had to the number of tokens that Erik has is 8 to 7. It's written as

$\displaystyle \frac{x}{y}=\frac{8}{7}$

Or equivalently

$7x=8y$

Replacing y from the first equation

$7x=8(135-x)$

Operating

$7x=1080-8x$

Simplifying

$15x=1080$

$\boxed{x=72}$

Riley has 72 tokens

3 0

3 years ago

1 of 6

nasty-shy [4]

Answer:

something

Step-by-step explanation:

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2 years ago

You are given $100 for your birthday. You put the $100 in a savings account that pays an interest rate of 2.4% compounded monthl

jonny [76]

Each month the new total you be
initial amount * 1.024

Repeating the process for a year (=12 months) you get
initial amount * 1.024^12

Being initial amount = $100

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After 1 year you will have $132.92

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3 years ago

A boy found a bicycle lock for which the combination was unknown. the correct combination is a four-digit number,

saul85 [17]

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3 years ago