2 years ago

Pleasee help me on my bellwork!!!! i will mark you BRAINLIEST!!!

Mathematics

1 answer:

brilliants [131]2 years ago

5 0

17/2, 8 and 1/2 or 8.5 are all the correct answers.

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One year, the population of a city was 80,000. Several years later it was 66,400. Find

Shalnov [3]

Answer:

The population decrease by 17%.

Step-by-step explanation:

This is because 66,400 is 83% of 80,000.

100%-83%= 17%

Therefore, the percentage of the population that decreased was 17%

7 0

2 years ago

Through (8,6) with a slope of 3/2

MakcuM [25]

Answer:

⇒y=32x+18

Step-by-step explanation:

5 0

2 years ago

Really struggling with this, can someone please help me out and give me a brief explanation? Id seriously appreciate it.

Bogdan [553]

Answer:

314 m²

Step-by-step explanation:

the surface area of a sphere (As) is

As = 4×pi×r²

our radius r (half of the diameter) here is 5m.

As = 4×3.14×5² = 4×3.14×25 = 100×3.14 = 314 m²

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2 years ago

Scott wants to buy fencing to place around a semicircular rock garden The diameter of the semicircle is 16 feet Using 3.14 for p

Pavel [41]

The diameter of the semicircle is 16 feet.

He calculates that he needs to buy abut 25.12 feet of fencing.

To find amount of fencing we find the circumference of semicircle

Circumference of semicircle = $\frac{1}{2}\pi d+d$

Where d is the diameter of the circle

d= 16 given and value of pi is 3.14

Circumference of semicircle = $\frac{1}{2}*3.14*16+16$

=25.12 + 16 = 41.12 feet

Scott's calculation was wrong because he forgot to add the diameter d

Circumference of circle is half way of circle plus the diameter of circle.

Correct amount of fencing = 41.12 feet

7 0

2 years ago

Someone help me :-):-):-) no flile

egoroff_w [7]

Answer: 2x+8 and 2(x+4)

4 0

2 years ago