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4 years ago

Please help me .....:

Mathematics

1 answer:

svp [43]4 years ago

6 0

It's Kara. The 2 is in the tens place and the 7 is in the ones place.
You can draw 2 rows of ten blocks and 7 seperate blocks.
Hope this helps!

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I need the answer 1st grade homework

sweet-ann [11.9K]

You subtract the circles because 12-2 equals 10. This means that if you want to subtract 4 from twelve, draw 8 circles.

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3 years ago

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What is the area of a sector with a central angle of 108 degrees and a diameter of 21.2 cm?

Rasek [7]

Answer:

$105.84\ cm^2$

Step-by-step explanation:

step 1

Find the area of the circle

The area of the circle is

$A=\pi r^{2}$

we have

$r=21.2/2=10.6\ cm$ ----> the radius is half the diameter

substitute

$A=\pi (10.6)^{2}$

$A=112.36\pi\ cm^2$

step 2

Find the area of a sector

Remember that

The area of the circle subtends a central angle of 360 degrees

using proportion

Find out the area of a sector with a central angle of 108 degrees

$\frac{112.36\pi}{360^o}=\frac{x}{108^o}\\\\x=112.36\pi(108)/360\\\\x=33.708\pi\ cm^2$

assume

$\pi=3.14$

substitute

$33.708(3.14)=105.84\ cm^2$

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3 years ago

Question 10 of 2

stich3 [128]

Given the expression, 8x^2 + 1, the coefficient of the term 8x^2 is 8, while the constant is 1.

Therefore, the correct answer is D) 8.

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3 years ago

Melissa paid for her lunch with a twenty-dollar bill and received $5.43 back for her change. How much was Melissa's lunch?

Lena [83]

I think the answer is b

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The total money earned if Lee sold four scarves at twenty dollars each.

leonid [27]

Answer:

$80

Step-by-step explanation:

If we have four scarves, and each costs $20, we can multiply these two numbers to find the total profit made.

$20\cdot4$

2 times 4 is 8, and adding a 0 to that is 80.

Hope this helped!

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3 years ago