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2 years ago

Can someone help please?

Mathematics

1 answer:

Marina CMI [18]2 years ago

6 0

Answer:

g(7) = 16

Step-by-step explanation:

When evaluating piecewise-defined functions, the first step is to determine which domain the value of the independent variable falls into. Then the associated function is evaluated in the usual way.

For x=7, the applicable domain is (2, ∞). This means the applicable function is ...

g(x) = (x +1)(x -5)

For x=7, this is ...

g(7) = (7 +1)(7 -5) = (8)(2)

g(7) = 16

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A student number system for a county requires that the student number be 5 characters.

Radda [10]

Answer:

131040

Step-by-step explanation:

10*9*8*7*26

=131040

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2 years ago

A ball bearing has mass 0.44 pounds. 1 kg = 2.2 pounds. <br>

torisob [31]

Answer:

(i) 0.2 kg

(ii) kg/cm³

(b) 2.29 kg

Step-by-step explanation:

This problem gives you relations between units, and the formulas for density and mass. It is asking you to make use of these relations in various mass and density calculations.

The relationship between kg and pounds can be used to write a units conversion multiplier. It will have numerator equal to denominator, but will have units such that multiplying by it will give the units you want.

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0.44 pounds × (1 kg)/(2.2 pounds) = (0.44/2.2)(1 kg)

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The formula can be used to find the units of interest:

Density = mass/volume

units of density = (units of mass)/(units of volume)

units of density = kg/cm³

Using the given formula with the given value of L, we find the volume to be ...

V = 4(1.40 cm)(3 -1.40 cm)² = 14.336 cm³

Then the mass is ...

mass = volume × density

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The mass is about 2.29 kg.

_____

<em>Additional comment</em>

Often you will see density in terms of kg/m³ or g/cm³. Water has a density of about 1 g/cm³ or 1000 kg/m³. The most dense non-radioactive element in the periodic table is osmium, with a density of about 22.6 g/cm³, or 0.0226 kg/cm³. The material in part (b) of this problem has a density about 7 times that, so is clearly not from Earth.

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2 years ago

Write the three numbers less then 40 that have 2 and 5 as factors

ozzi

No. which have factors 2 & 5 have 2 & 5 as their prime factor
therefore, No. are :
2*5 = 10
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3 years ago

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daser333 [38]

Step-by-step explanation:

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