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3 years ago

Joes apple weighs 4/5 martas apple weighs 0.5 how much more does joes weigh than martas

Mathematics

2 answers:

bearhunter [10]3 years ago

8 0

0.3

First, we need them both in the same form. So, change 4/5 to a decimal. 4/5 = 8/10 = 0.8. .8 is greater than .5, so subtract. 0.8 - 0.5 equals 0.3. And there's you answer.

FromTheMoon [43]3 years ago

6 0

Answer:

0.3

Step-by-step explanation:

4/5=0.8

0.8-0.5=0.3

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Y = -2x2 + 10 y = -2x – 2

34kurt

Answer:

x = 6

y = - 14

Step-by-step explanation:

$\left \{y=-2x2 + 10y} \atop {y=-2x -2}} \right.$

-2x × 2 + 10 = - 2x - 2
x = 6
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2 years ago

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alexandr402 [8]

Answer:

I think its 5

Step-by-step explanation:

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2 years ago

Hi, teacher I was absent these days and I didn’t understand anything about this lesson and I need help this is not count as a te

motikmotik

Given:

There are given that the cos function:

$cos210^{\circ}=-\frac{\sqrt{3}}{2}$

Explanation:

To find the value, first, we need to use the half-angle formula:

So,

From the half-angle formula:

$cos(\frac{\theta}{2})=\pm\sqrt{\frac{1+cos\theta}{2}}$

Then,

Since 105 degrees is the 2nd quadrant so cosine is negative

Then,

By the formula:

$\begin{gathered} cos(105^{\circ})=cos(\frac{210^{\circ}}{2}) \\ =-\sqrt{\frac{1+cos(210)}{2}} \end{gathered}$

Then,

Put the value of cos210 degrees into the above function:

So,

$\begin{gathered} cos(105^{\circ})=-\sqrt{\frac{1+cos(210)}{2}} \\ cos(105^{\operatorname{\circ}})=-\sqrt{\frac{1-\frac{\sqrt{3}}{2}}{2}} \\ cos(105^{\circ})=-\sqrt{\frac{2-\sqrt{3}}{4}} \\ cos(105^{\circ})=-\frac{\sqrt{2-\sqrt{3}}}{2} \end{gathered}$

Final answer:

Hence, the value of the cos(105) is shown below:

$cos(105^{\operatorname{\circ}})=-\frac{\sqrt{2-\sqrt{3}}}{2}$

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10 months ago

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Step-by-step explanation:

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3 years ago

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strojnjashka [21]

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