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3 years ago

Please help me with #8-9. PLEASE!!!

Mathematics

1 answer:

Firdavs [7]3 years ago

6 0

8a . the constant of proportionality is 2. 8b . the constant of proportionality is 3. 9. Nathan should order 1 cup of each food on the chart. <span />

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Which inequality is true?

djyliett [7]

Answer:

B is correct

Step-by-step explanation:

These are Absolute Value expressions. (How far from 0 on the number line) So disregard negative or positive signs. The only true statement would be 2<4.

7 0

3 years ago

Read 2 more answers

Question 9

Alenkasestr [34]

Answer:

$PX=4\\PY=4\sqrt{3}$

Step-by-step explanation:

Let $\angle PYZ=Q$

$\Rightarrow \angle XYP=90-\angle PYZ\\\angle XYP=90-\theta$

In the $\Delta PYZ$

$\tan\theta =\frac{opposite}{adjacent}=\frac{PZ}{PY}......(1)$

In the $\Delta YPX$

$\tan(90-\theta)=\frac{opposite}{adjacent}=\frac{PX}{PY}$

$\cot=\frac{PX}{PY}....(2)$

eqn(1) $\times$ eqn(2)

$\tan\times\cot\theta=\frac{PZ}{PY}\times\frac{PX}{PY}\\\\1=\frac{PZ\times PX}{PY^2}\ \ (as\ tan\theta\ =\frac{1}{\cot\theta})\\\\PY^2=PZ\times PX\\PY^2=12PX.......(3)$

Now in $\Delta XYP$

use Pythagorean theorem

$XY^2=PY^2+PX^2\\8^2=PY^2+PX^2\ \ (as\ XY\ =8)\\PX^2+PY^2=64\\\\PY^2=12PX\ \ (eqn(3)\\\\\Rightarrow PX^2+12PX=64\\\\PX^2+12PX-64=0\\\\PX^2+16-4PX-64=0\\\\(PX+16)(PX-4)=0\\\\PX=4,\ -16$

Length can not be negative

Hence $PX=4$

$PY^2=12PX=12\times4=48\\\\PY=\sqrt{48}=4\sqrt{3}$

Hence $PX=4,\ PY=4\sqrt{3}$

8 0

3 years ago

What is the equation ?

schepotkina [342]

Answer:

$y=1/3x$

Step-by-step explanation:

It's positive, and it goes up once for every three times it goes to the right.

4 0

3 years ago

F(x)=3x+5 and g(x)=x^2 <br> find g(3x)

juin [17]

Answer:

g(3x) = 9x²

Step-by-step explanation:

To evaluate g(3x) substitute x = 3x into g(x) , that is

g(3x) = (3x)² = 9x²

5 0

3 years ago

Can someone please help me with #6!

Digiron [165]

You have to find the area of each part and add them together.

There are three parts. The area of the first part is 6*12 which is 72. The next part is 6*6 which is 36. And the next part is 6*6*(1/3), I think. So the answer should be 120.

4 0

3 years ago