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3 years ago

What is the correct evaluation of x2 - y2 - z2, when x is equal to -2, y is equal to 3 and z is equal to 4?

Mathematics

2 answers:

riadik2000 [5.3K]3 years ago

3 0

Answer:

-18

Step-by-step explanation:

x2 - y2 - z2 if x=-2, y=3, and z=4

x2 - y2 - z2

(-2) 2 - (3)2 - (4)2

(-4) - (6) - (8)

-10 -8

-18

Goshia [24]3 years ago

3 0

Answer:

Step-by-step explanation:

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An angle measures 36.8° more than the measure of its complementary angle. What is

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Answer:

og angle: 126.8

complementary angle: 53.2

og angle mirror (if any): 126.8

complementary angle mirror (if any): 53.2

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2 years ago

If f(x) = x-3/x, g(x) = x+3, and h(x) = -2x+1, what is (gohof)(x)

Leno4ka [110]

Answer:

Step-by-step explanation:

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3 years ago

In 1970, a farmer using a two-row combine with a corn head could easily harvest 0.75 ha (1.85 acres) per hour and a typical corn

Anastaziya [24]

Answer:

The value is $w = 6.7 \%$

Step-by-step explanation:

Generally the productivity rate is mathematically represented as

$P_r = K * Z$

Here K is the ha the farmer could harvest in an hour and Z is a typical yield of corn in kg/ha

Now considering 1970

The productivity rate is

$P_r = 0.75 *5000$

=> $P_r = 3750 \ kg/h$

Now considering 1940

The productivity rate is given as $P_R = 250 \ kg/h$

Generally the productivity ratio is mathematically ration is mathematically represented as

$w = \frac{P_R}{P_r} * 100$

=> $w = \frac{250}{3750} * 100$

=> $w = 6.7 \%$

5 0

3 years ago

Find the inverse function of y=1

AveGali [126]

Answer:

To find the inverse, interchange the variables and solve for y

f^−1(x)=−7x+7

Hope I helped :)

4 0

3 years ago

Read 2 more answers

The volume of a rectangular pyramid is 900 cubic centimeters.It has a length of 10 centimeters and a width of 9 centimeters. Wha

MariettaO [177]

The height of a rectangular pyramid is 30 cm.

volume of rectangular pyramid = (length x width x height) / 3

Given:
Volume = 900 cm³
Length = 10 cm
Width = 9 cm
Height = ?

V = lwh/3
900 cm³ = (10cm * 9cm * h)/3
900 cm³ * 3 = (90cm² * h)/3 * 3
2700 cm³ = 90cm² * h
2700 cm³/90cm² = 90cm² * h/90 cm²
30 cm = h

to check:
900 cm³ = (10 cm * 9 cm * 30 cm)/3
900 cm³ = 2700 cm³/3
900 cm³ = 900 cm³

3 0

3 years ago