3 years ago

1252

Mathematics

1 answer:

Slav-nsk [51]3 years ago

8 0

I think it last one 25

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Please help me <br> 3(x + 2) * 10 * 7 divided by 70 - 2 (x+2)<br><br> Simplify

I am Lyosha [343]

Answer:

= 105(x+2)/33-x

Step-by-step explanation:

Given the expression

[3(x+2)*10*7]÷70 - 2(x+2)

= 3(x+2)*70÷70 - 2(x+2)

= 210(x+2)/70-2x-4

= 210(x+2)/66-2x

= 210(x+2)/2(33-x)

= 105(x+2)/33-x

8 0

3 years ago

An environmentalist wants to find out the fraction of oil tankers that have spills each month.Step 1 of 2:Suppose a sample of 47

torisob [31]

Answer: The proportion of oil tankers that had spills is $\dfrac{156}{474}$ or 0.329.

Step-by-step explanation:

Since we have given that

Number of tankers is drawn = 474

Number of tankers did not have spills = 318

Number of tankers have spills = 474 - 318 = 156

Proportion of oil tankers that had spills is given by

$\dfrac{Containing\ spill}{Total}=\dfrac{156}{474}=0.329$

Hence, the proportion of oil tankers that had spills is $\dfrac{156}{474}$ or 0.329.

3 0

3 years ago

Increase 12 in to the given ratio of 4:3

inysia [295]

Answer:

16:12

Step-by-step explanation:

(4+12)=16

16/4 = 4

4x3=12

Another method:

4---------3

16-------x

Cross multiplication

4x=16x3

4x=48

x=12

4 0

2 years ago

Give an example of two whole number factors with a product of 9

Monica [59]

3 and 3 or 1 and 9 not really sure of anything else

7 0

3 years ago

The legs of a right triangle are 3 units and 8 units. What is the length of the hypotenuse? Round your answer to the nearest hun

Juliette [100K]

Pythagorean Theorem
3*3+8*8=x*x
9+64=x*x
73=x*x
x=√73≈8.5

4 0

3 years ago