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2 years ago

3(x-5)+4=4-2(x-1) worked it out just need to see if answers right

Mathematics

2 answers:

Sonja [21]2 years ago

6 0

Hello,

3(x-5)+4=4-2(x-1)
==>3x-15+4=4-2x+2
==>3x-11=6-2x
==>3x+2x=6+11
==>5x=17
==>x=17/5
==>x=3.4

Gennadij [26K]2 years ago

5 0

Cleared the P's first, then muilt by 4 to clear the "D" and last solved for X and got 4.2

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A simple random sample is free from any systematic tendency to differ from the population from which it was drawn.

Ket [755]

Answer:

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Step-by-step explanation:

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3 years ago

Translate into an algebraic expression: If I travel d miles in h hrs downstream on a river with a current of c mph, what would m

xenn [34]

Answer:

The speed is still water is $v = \frac{d}{h} - c$ .

Step-by-step explanation:

Dimentionally speaking, speed is distance divided by time. Since, the person is travelling downstream, absolute speed is equal to the sum of current speed and speed of the person regarding current. Both components are constant. That is:

$c + v = \frac{d}{h}$

Where:

$c$ - Current speed, measured in miles per hour.

$v$ - Speed of the person regarding current, measured in miles per hour.

$d$ - Distance travelled downstream, measured in miles.

$h$ - Time spent on travelling, measured in hours.

Speed in still water occurs when current speed is zero. Then, such variable is obtained after subtracting current speed on both sides of the expression. Hence:

$v = \frac{d}{h} - c$

The speed is still water is $v = \frac{d}{h} - c$ .

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3 years ago

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2 years ago

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3 years ago

Can someone help plz

olchik [2.2K]

Answer:

A.) 2x - 9x - 30 = -6

Step-by-step explanation:

hello !

to solve this system of equations, first, we substitute the equation $y = 3x + 10$ to the <em>y </em>variable in the equation $2x-3y = -6$ . Therefore, we get:

$2x - 3(3x+10)=-6$

now, we simplify by multiplying -3 to the variables inside the parenthesis, which, in short, is also called the distributive property. thus, we get:

$2x - 9x - 30 = -6$

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2 years ago