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3 years ago

Pens cost $2.70. What is the cost per pen?

Mathematics

1 answer:

muminat3 years ago

5 0

Answer:

1.70$

Step-by-step explanation:

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Can somebody help me with this question?

V125BC [204]

Answer:

$\frac{2}{5}\vec{a}+\vec{b}$

Step-by-step explanation:

$\vec{DE}=\vec{DB}+\vec{BE}$

$=\frac{3}{5}\vec{OB}+\frac{1}{5}\vec{BC}$ $\left\{OD:DB=2:3,BE:EC=1:4\right\}$

$=\frac{3}{5}\left(\vec{OA}+\vec{AB}\right)+\frac{1}{5}\left(\vec{BA}+\vec{AO}+\vec{DC}\right)$

$=\frac{3}{5}\left(\vec{a}+\vec{b}\right)+\frac{1}{5}\left(-\vec{b}-\vec{a}+\vec{3b}\right)$

$=\frac{2}{5}\vec{a}+\frac{2}{5}\vec{b}+\frac{3}{5}\vec{b}$

$=\frac{2}{5}\vec{a}+\vec{b}$

<em>I hope this helps you</em>

8 0

3 years ago

Find the solution of the Quadratic Equation 2X^2 + 2x - 12 = 0 note: X^2 means x to the power of 2

allsm [11]

x=3 and x= -2

Step-by-step explanation:

we could simplify it to x*2 + x -6 = 0

then 2 numbers whose sum is 1 and product is -6

the numbers are 3 and -2

3 0

3 years ago

Help plz. Should be super easy but I'm having troubles figuring it out for some reason.

lutik1710 [3]

This would be a total of 8 dollars.

7 0

4 years ago

Read 2 more answers

2.5 -5.9n - 3n +5.....?

SpyIntel [72]

-8.9n+7.5
would be your answer

8 0

3 years ago

Y=-2|x+2|-4 i need to find y intercept and the x intercept

NeTakaya

Answer:

x-int: ∅

y-int: (0,-8)

Step-by-step explanation:

To find the x and y-intercept, simply plug in zero for x and y:

$0=-2|x+2|-4\\4=-2|x+2|\\-2=|x+2|\\$

Because an absolute value cannot be equal to a negative, there is no x-intercept.

$y=-2|0+2|-4\\y=-2|2|-4\\y=-4-4\\y=-8$

Hope it helps :)

3 0

2 years ago