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salantis [7]
3 years ago
12

Evaluate 9x2y-2 for x = -3 and y = 2.

Mathematics
2 answers:
AVprozaik [17]3 years ago
8 0
Answer 270
9(-3)= -27
2(2)=4

-27(4)2 = 270
dusya [7]3 years ago
7 0
First plug in the values for x and y and distribute.

9(-3) x 2(2)—> -27 x 4

Now simply do 27 x 4

And you should get -108

And then do -108-2 which you give you -110 as your final answer. Hope this helps :)
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The lines shown below are perpendicular. If the green line has a slope of 2/5 what is the slope of the red line
Ksenya-84 [330]
In this item, we are not given with the figure but knowing that these lines ought to be perpendicular then we will be able to derive the relationship between the slopes of the line. 

The slopes of the perpendicular line are the negative reciprocals of one another. If we represent the slopes of the lines as m₁ and m₂, the relationship can be written in the form,
           (m₁)(m₂) = -1

We are given with one of the slopes. To determine the value of the second slope then,
            m₂ = -1/m₁
            m₂ = -1/(2/5)
            m₂ = -5/2

<em>ANSWER: m₂ = -5/2</em>
6 0
3 years ago
If a hen and a half lay an egg and a half in a day and a half, how many eggs will half a dozen hens lay in half a dozen days?
BlackZzzverrR [31]

Answer:

72 eggs

Step-by-step explanation:

Let’s simplify the answer: if one and a half hens lay an egg in 18 hours, how many eggs will 6 hens lay in 6 days? So 18/3=6, and 6x2=12. One hen can lay an egg in 12 hours. Which means a hen can lay 2 eggs in one day. 2x6=12. So 6 hens can lay 12 eggs in one day. 12x6=72. In 6 days, 6 hens can lay 72 eggs

Oh I answered first btw if you’re wondering later

5 0
3 years ago
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Find the value of x help plz​
lapo4ka [179]

Answer:

3) 53 degrees

4) 38 degrees

Step-by-step explanation:

Similarly to the previous question, the value of b in both of these examples can be found because you know that they are complementary with their adjacent angle.

3)

b+37=90

b=90-37

b=53 degrees

4)

b+52=90

b=90-52

b=38 degrees

Hope this helps!

3 0
3 years ago
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tino4ka555 [31]
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7 0
3 years ago
Show me how to get this answer show your work
Rama09 [41]

We know that angle MKJ is comprised of angle MKL and angle LKJ. That means if we add MKL and LKJ, we should get 80 degrees, which is the measure of angle MKJ.

MKL + LKJ= MKJ \implies \\ 2x+10+3x-5=80 \implies \\ 5x+5=80 \implies\\ 5x=75 \implies \\ x=15

So, we know that our x is 15. That is not enough to tell whether KL is an angle bisector, because we have to evaluate both MKL and LKJ with x=15, so:

MKL=2(15)+10 = 40\\ LKJ=3*15-5=40

So we see that these two angles are actually bisectors, and the third question best describes this phenomenon.

6 0
3 years ago
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