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3 years ago

For all real numbers a and b, if ab=0, then a=0 or b=0. True or false?

Mathematics

2 answers:

Sonbull [250]3 years ago

6 0

False I think because the variables are right next to each other which means it's multiplying and 0×0 equal 0

Alinara [238K]3 years ago

3 0

True. For example, if 2 is a, and b was 0, then ab would automatically be 0. Both a and b can be 0 though, but at least one of them must be zero.

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How many grams are 2.7x10-^4 grams

andrew-mc [135]

Answer:

0,00027 grams!

Step-by-step explanation:

This is a scientific notation problem.

When a number is followed by a $10^{-1}$ , it means that said number has one zero at the beginning.

In this case, the number is followed by $10^{-4}$ , so that means that 2.7 has four zeros at the beginning. So, 2.7x $10^{-4}$ grams is equal to 0,00027 grams! (always the comma goes after the first zero).

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3 years ago

Find the value of x in each figure number 5 please

Stells [14]

So the angle that's next to the 62 is 118. Now that means the other angles have to add up to 62. 62-14= 48 and 48/2 is 24 so X=24. Good luck! :)

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3 years ago

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yarga [219]

Answer:

C. is the correct answer

Step-by-step explanation:

A. is incorrect because the sequence does not start with 15

B. is incorrect because the pattern increases by 5, not multiplied by 5

C. is correct because all of the even numbers in the pattern do end in 0

D. is incorrect because even numbers don't end in 5's

Hope this helps!

5 0

1 year ago

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Which of the following steps would you perform to the system of equations below so that the equations have opposite y-coefficien

denis23 [38]

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3 years ago

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To cover a rectangular region of her yard, Penny needs at least 155 square feet of sod. The length of the

Tasya [4]

To cover a rectangular region of her yard, Penny needs at least 170.5 square feet of sod. The length of the region is 15.5 feet. What are the possible widths of the region?

L=length=15.5 ft; W=width; A=area=>170.5 sq ft

L*W=>170.5 sq ft Divide each side by L

W=>170.5 sq ft/L

W=>170.5 sq ft/15.5 ft=>11 feet

ANSWER: To cover at least 170.5 sq ft. the width must be at least 11 feet.

<h2>Brainly pls</h2>

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2 years ago