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gladu [14]
3 years ago
12

Help me the ones marked in red.

Mathematics
1 answer:
aev [14]3 years ago
5 0
2. 22
6. 12
7. 420x^3
10. 7
14. 1
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Can soemone help meee ):
bogdanovich [222]

I don't know the answer but my tip would be to split the shape the way I did it, find the lengths of each side, and then find the area for each individual shape.

Then add all the areas together.

6 0
3 years ago
Compare the line passing through the points (−3, −11) and (6, 4) to the line given by the equation y=35x−6.
Aleks04 [339]
Let
<span>A------> (−3, −11)
B------>  (6, 4)

step 1
find the slope m point A and point B
m=(y2-y1)/(x2-x1)-----> </span>m=(4+11)/(6+3)----> m=15/9---> 5/3

step 2
with m=5/3 and point B (6, 4)  find the equation of a line
y-y1=m*(x-x1)-----> y-4=(5/3)*(x-6)---> y=(5/3)x-6

case <span>a. they have the same slope------> is not correct
because
</span><span>y=35x−6------> the slope m=35
</span>y=(5/3)x-6---> the slope m =5/3

case <span>b. they have the same x-intercept.----> is not correct
because
</span>the x-intercept is for y=0

y=35x−6-----> 0=35x-6----> 35x=6-----> x=6/35
the x-intercept is the point (6/35,0)

y=(5/3)x-6----> 0=(5/3)x-6----> (5/3)x=6---> x=18/5
the x-intercept is the point (18/5,0)

case <span>c. the two lines are perpendicular. do. they have the same y-intercept-----> is nor correct
because

if two lines are perpendicular
m1*m2=-1-------> </span><span>this condition is not satisfied
</span>
the y intercept is for x=0

y=35x−6-------> y=-6
the y intercept is the point (0,-6)

y=(5/3)x-6-----> y=-6
the y intercept is the point (0,-6)

 they have the same y-intercept but the two lines are not perpendicular

see the attached figure

7 0
3 years ago
Solve &amp; Explain your Math thinking 12-7
Tom [10]

For this case we have the following subtraction:

12-7

We can rewrite the subtraction in an easier way.

We have then:

12-7 = 12 - (5 + 2)

Then, by doing associative property we have:

12 - (5 + 2) = (12-2) - 5\\(12-2) - 5 = 10 - 5\\10 - 5 = 5

Answer:

The value of the subtraction is given by:

12-7 = 5

4 0
3 years ago
Read 2 more answers
Select the points you need to calculate the average rate of change from the beginning of the
sammy [17]
It would be the points (0,80) and (15,10)
6 0
3 years ago
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Solve the inequality 16 &gt; -2u
Ksju [112]
To solve this inequality, you need to isolate the value of u. To do this, divide both sides by -2. When you do this, keep in mind that when you divide or multiply both sides by a negative in an inequality, you MUST flip the sign, so your answer would be -8 < u or u > -8.
8 0
3 years ago
Read 2 more answers
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