3 years ago

I NEED HELP ON THIS ONE TO

Mathematics

2 answers:

mario62 [17]3 years ago

6 0

Answer:

Step-by-step explanation:

3+y+6

y=5

Plug in 5 for y

3+5+6= 14

lora16 [44]3 years ago

5 0

Answer:

Its 9

Step-by-step explanation:

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A set of bookshelves rests on a hard floor surface on four legs, each having a cross-sectional dimension of 3.0×4.1cm in contact

tatiyna

Answer:

$5.22\cdot 10^5 Pa$

Step-by-step explanation:

The pressure exerted by an object is given by:

$p=\frac{F}{A}$

where

F is the magnitude of the force

A is the area of the surface perpendicular to the force

In this problem, the force is the weight of the books + the shelf, which is given by

$F=mg$

where

m = 262 kg is the total mass

$g=9.8 m/s^2$ is the acceleration of gravity

Substituting,

$F=(262)(9.8)=2568 N$

The area of the four legs is:

$A=4(3.0 cm\cdot 4.1 cm)=4(12.3 cm^2)=49.2 cm^2 = 49.2\cdot 10^{-4} m^2$

Therefore, the pressure exerted on them is:

$p=\frac{F}{A}=\frac{2568}{49.2\cdot 10^{-4}}=5.22\cdot 10^5 Pa$

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3 years ago

The blue figure is a translation image of the black figure. Write a rule to describe the translation.

Lubov Fominskaja [6]

Rule is 7 can only be divisible by 1 and no other number

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2 years ago

Which are the best buys? ay 3 books for Rs 60 or 5 same books for Rs 90

kogti [31]

Answer:

Sine 3 books are for 60-

60/3

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2 years ago

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In 1 week of training for the San Francisco Marathon, Jessy Bergeman had training runs of 3.3 miles, 7.7 miles, 5.9 miles, 16.1

GrogVix [38]

Answer:

38.4 miles

Step-by-step explanation:

3.3 + 7.7 + 5.9 + 16.1 + 5.4 = 38.4

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2 years ago

3t + 4t - t + 5

nikdorinn [45]

Option A is the correct answer

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2 years ago