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3 years ago

-2x-4+5x=8 please help, I'm too stupid to do this.

Mathematics

2 answers:

Tatiana [17]3 years ago

8 0

Answer:

x= 4

Step-by-step explanation:

-2x -4 + 5x = 8

3x - 4 = 8

3x = 12

x= 4

nydimaria [60]3 years ago

5 0

Answer: x=1 1/3

Step-by-step explanation:

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Step-by-step explanation:

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3 years ago

) a) Liaqat gave his uncle a puzzle. "five times my age plus 10 years makes 70 years." How old is Liaquat? b) His uncle replied,

Kamila [148]

Answer:

a. 12 years

b. 30 years

Step-by-step explanation:

a) Assume Liaqat's age is x. His age would be:

5x + 10 = 70

5x = 70- 10

x = (70 - 10) / 5

x = 12

<em>Liaqat is 12 years old.</em>

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<em>Liaqat's uncle is 30 years old. </em>

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3 years ago

The vector parametric equation for the line through the points (−1,−4,2) and (−1,0,−3) is:_______

ollegr [7]

Answer: $x(t)=-1$

$y(t)=-4+4(t)$

$z(t)=2-5(t)$

Step-by-step explanation:

To find: The vector parametric equations for the line through the points (−1,−4,2) and (−1,0,−3).

Let A (−1,−4,2) and B(−1,0,−3)

First we find direction vectors : $\overrightarrow{AB}=$

Now, the parametric equations of the line:

$x(t)=-1+0(t)$

$y(t)=-4+4(t)$

$z(t)=2-5(t)$

Hence, the vector parametric equations for the line through the points (−1,−4,2) and (−1,0,−3):

$x(t)=-1$

$y(t)=-4+4(t)$

$z(t)=2-5(t)$

5 0

3 years ago