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2 years ago

Find x, y and z help i don’t know what to do, it’s the last question

Mathematics

1 answer:

Ray Of Light [21]2 years ago

3 0

Answer:

y=3

(bc it is the same length as its perpendicular counterpart.

x= 9 (same with Z)

(From pythagorean theorem)

6^2+3^2= (root of) 45

and square root 45

and it is the same as its counterpart (which is z)

Step-by-step explanation:

as I explained on the answer(it doesnt let this part be unwritten)

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Please help!! I do not understand this!

jarptica [38.1K]

Answer: C

Step-by-step explanation:

Replace x with $-\frac{2}{3}$ and solve.

f(x) = 3x² - 6x - 1

f( $-\frac{2}{3}$ ) = 3( $-\frac{2}{3}$ )² - 6( $-\frac{2}{3}$ ) - 1

= 3( $\frac{4}{9}$ ) + 4 - 1

= $\frac{4}{3}$ + 3

= $\frac{4}{3}$ + $\frac{9}{3}$

= $\frac{13}{3}$

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2 years ago

a veterinarian's office recorded one particular week that they had 50 patients. the following table shows the recorded number of

Sedbober [7]

We need to see the table to help out, can you attach a picture?:

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3 years ago

Read 2 more answers

What two functions does the brain control and when we sleep

DENIUS [597]

Answer:

circadian rhythm and homeostasis–work together to regulate when you are awake and sleep

Step-by-step explanation:

8 0

3 years ago

I really need help with number 1

Sedaia [141]

3/4 / 2/1
Keep, Change, Flip
3/4 * 1/2 = 3/8

5/4 / 2/1
Keep, Change, Flip

5/4 * 1/2 = 5/8

Answer: 3/8 and 5/8

6 0

3 years ago

A force of 4 pound acts in the direction of 48degree to the horizontal. The force moves an object along a straight line from the

Dafna11 [192]

Answer:

Work Done = 27.66 Joules

Step-by-step explanation:

The work done is:

$W=F*d*Cos \theta$

Where

F is the fore

d is the distance moved

$\theta$ is the angle

The force is "4"

The distance is the distance from (1,7) to (8,10)

The distance is the square root of change in y coordinates, squared and sum of change in x coordinates, squared. Hence, distance is:

$\sqrt{(10-7)^2+(8-1)^2}\\=\sqrt{3^2+7^2}\\\sqrt{58}$

The angle is gotten by the formula:

$Cos\phi = \frac{Force in x direction}{Distance}\\Cos\phi = \frac{8-1}{\sqrt{58}}\\Cos\phi=\frac{7}{\sqrt{58}}\\\phi = Cos^{-1}\frac{7}{\sqrt{58}}\\\phi = 23.21$

So, now:

$\theta = 48 - 23.21 = 24.79$

Work Done = $F*d * Cos\theta = 4 * \sqrt{58} * Cos(24.79)$

Work Done = 27.66 Joules

6 0

3 years ago