4 years ago

9.

Mathematics

1 answer:

Sloan [31]4 years ago

5 0

Answer:

your answer is 1

Step-by-step explanation:

when you work with negative numbers, you have to work backwards.

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What’s the area of this figure

kvasek [131]

Answer:

743.25m^2

Step-by-step explanation:

Area of triangle = 1/2bh

= 1/2 x 30 x 26

= 390

Area of semi circle = 1/2 πr^2

= 1/ 2 x 3.14 x 15 x15

=353.25m^2

= 390 + 353.25

= 743.25m^2

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3 years ago

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The student population at a middle school in June, 2020 was 1678. In September, 2021, the student population was 1463. What is t

HACTEHA [7]

Answer: -12.81% decrease

Step-by-step explanation:

1678-1463/1463 * 100 = -12.8128

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3 years ago

<img src="https://tex.z-dn.net/?f=%5Cfrac%20%7B%2018%20%5E%20%7B%20n%20%2B%201%20%7D%20%5Ctimes%203%20%5E%20%7B%201%20-%20n%20%7

Rufina [12.5K]

Answer:

$4 \times {3}^{n + 3}$

Step-by-step explanation:

$\frac{ {18}^{n + 1} \times {3}^{1 - n}}{ {2}^{n - 1} }$

$\frac{ {3}^{2n + 2} \times {2}^{n + 1} \times {3}^{1 - n} }{ {2}^{n - 1} }$

${3}^{2n + 2} \times {2}^{2} \times {3}^{1 - n}$

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8 0

3 years ago

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PLEASE HELP ASAP!

scoray [572]

Answer:

AM = 900

CI = 500

I have to be honest, this is the most ridiculously worded question of this type that I have ever seen... ask you teacher, why it was so important to force you to solve it using only one variable?

Step-by-step explanation:

(AM) + (1400-AM) = 1400

2(AM) + 3(1400 - AM) = 3300

2AM + 4200 -3AM = 3300

-AM = -900

AM = 900

CI = 500

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3 years ago

A gold chain with an original price of $120 is on sale for $96. What is the percentage of the discount?

Rus_ich [418]

Answer:

$120 - A

Step-by-step explanation:

20% of 120 is 20.

120-20 + 100

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3 years ago