Can someone help with 39-40 ???

Mathematics

1 answer:

Allisa [31]3 years ago

6 0

39. 8 -0.7 are multiplied together so the answer is

(-0.7)^8

= 0.05765 to nearest 100 thousandth. ( using a calculator).

40. 10^4 + 0^12 = 10,000 + 0

= 10,000

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Louisa is trying to read her grocery receipt, but it is blurry. The sales tax rate was 6.25%. She pays tax only on the items lab

Artyom0805 [142]

Tax on canned tuna : None
Tax on paper towels : 6.89*6.25/100=0.430625~$0.43
Tax on straws : 0.99*6.25/100=0.061875~$0.06
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3 years ago

Help me please and show work

Rzqust [24]

Answer:

Red circle: 30 cm

Blue circle: 60 cm

Step-by-step explanation:

The circle's circumference is calculated with

$d \times \pi$

They want you to make it <em>about</em> how long it is so instead of pi we can just use 3 (since pi is about 3,14). The diameter (d) is double the ratio.

So now we just put in the numbers.

For the red one

$10 \times 3 = 30$

The circumference is about 30 centimetres.

For the blue one

We know the ratio of the smaller so we just add together the small ratio with the rest of the length that we know so the blue one's ratio is 10 cm. (5+5=10)

And now we just put the numbers in again.

$20 \times 3 = 60$