2 years ago

Select the correct answer.

Mathematics

1 answer:

andrew-mc [135]2 years ago

4 0

I think the answer would be 8+9

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Elmer has a collection of 300300300 fossils. Of these, 21\%21%21, percent are fossilized snail shells.

aleksandrvk [35]

I believe that they typo meant 300 fossils of which 21% are snail shells.

Since % means per one hundred...

300(21/100)=63

Elmer has 63 fossilized snail shells.

3 0

2 years ago

The difference between eight times a number and six more than three times the number. Please help find the equation and simplify

Rainbow [258]

Answer: x>1.2

Step-by-step explanation:

Let a number is x.

Hence,

$8x-6 > 3x\\\\8x-6-3x > 3x-3x\\\\5x-6 > 0\\\\5x-6+6 > 0+6\\\\5x > 6\\$

Divide both parts of the equation by 5:

$x > 1.2$

8 0

1 year ago

What is 77.2-43.778? what is 2.072 divided by 5.6

Shkiper50 [21]

2.072/5.6= 0.37

77.2- 43.778= 33.422

Hope this helps!

~LENA~

8 0

2 years ago

In preparing a certain ointment, a pharmacist used 28.35 g of zinc oxide instead of the 31.1 g called for. Calculate the percent

Vilka [71]

Answer: 9.70%

Step-by-step explanation:

The formula to find the percentage error is given by :-

$\%\text{ error}=\dfrac{|\text{Estimate-Actual}|}{\text{Actual}}\times100$

Given : Actual mass of zinc oxide used by pharmacist = 28.35 g

Estimated mass of zinc oxide used by pharmacist =31.1 g

Now, $\%\text{ error}=\dfrac{|31.1-28.35|}{28.35}\times100$

i.e. $\%\text{ error}=\dfrac{2.75}{28.35}\times100$

i.e. $\%\text{ error}=9.70017636684\approx9.70\%$

Hence, the percentage of error on the basis of the desired quantity.= 9.70%

5 0

3 years ago

What is the value of x? x+15=8 x=

melisa1 [442]

8-15= -7

x= -7

I think this is correct..

8 0

2 years ago

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