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2 years ago

Which expression is equivalent to 5r+11r−2?

Mathematics

1 answer:

Readme [11.4K]2 years ago

7 0

Answer:

2(8r-1)

Step-by-step explanation:

collect like terms

5r+11r=16r

16r-2

then factor out a 2

2(8r-1)

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The figure below shows a shaded rectangular region inside a large rectangle: (pic)

mariarad [96]

Answer:

Step-by-step explanation:

Probability of falling NOT in the shaded region is "area of white region" divided by "area of whole rectangle (big one)".

Area of whole rectangle:

Area of rectangle = length * width = 10 * 5 = 50

Area of White Region:

First, area of shaded region = length * width = 4 * 2 = 8

Now,

Area of white region = area of whole rectangle - area of shaded rectangle

Area of white region = 50 - 8 = 42

Hence, probability is $\frac{42}{50}=0.84$

0.84 = 84%

Answer choice D is right.

8 0

3 years ago

Party punch cost $2.50 per half gallon how much would 6 gallons cost

saveliy_v [14]

2.4 is the answer i think

7 0

3 years ago

Read 2 more answers

1. In which number does the 6 have a value that is one-tenth the value of the 6 in 34,7612

DiKsa [7]

I think it's C, I could be wrong though

8 0

3 years ago

Nitric acid (specific gravity 1.42) costs $51.95 per liter. A student spills 5.112 kg of nitric acid in the laboratory, what is

Leno4ka [110]

Answer:

The cost of wasted nitric acid is $187.02

Step-by-step explanation:

Since it is given that specific gravity of Nitric Acid is 1.42 Thus the density of nitric acid is

$\rho _{acid}=S.G\times \rho _{water}\\\\\\\rho_{acid}=1.42\times 1\frac{g}{cm^3}\\\\\rho_{acid}=1.42g/cm^3$

Now from the basic relation of mass volume and density we have

$\rho =\frac{Mass}{Volume}\\\\\therefore Volume=\frac{Mass}{\rho }$

Since the mass of the nitric acid is given to be 5.112 kg = 5112 grams

Thus the volume of nitric acid is

$Volume=\frac{5112}{1.42}=3600cm^3$

Now we know that 1000 cubic centimeters euals 1 litrer

Thus the calculated volume in liters is

$V_{liters}=\frac{3600}{1000}=3.6Liters$

Thus the cost of acid spilled equals

$Cost=3.6\times 51.95=187.02$

5 0

3 years ago

Given vectors

Bogdan [553]

Answer:

option 2, 3, and 5

Step-by-step explanation:

yuh

7 0

3 years ago