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2 years ago

Help on this please.

Mathematics

1 answer:

antiseptic1488 [7]2 years ago

6 0

Answer: 33.88 meters

Step-by-step explanation:

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The equation for the pH of a substance is pH = -log[H'], where H+ is the concentration of hydrogen ions. A basic

scoundrel [369]

Answer:

9 (approximately)

Step-by-step explanation:

Approximate difference

= pH of basic solution - pH of acidic solution

= 11.2 - 2.4

= 8.8

= 9 (approximately)

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3 years ago

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Part A: Let y represent the number of rabbits after x years. Which function can be used to model y as a function of x, where x i

fenix001 [56]

Answer:

pls

Step-by-step explanation:

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3 years ago

The startup division made 80% of 1/2 of the established division. The startup division’s growth was 1/3 greater than the establi

Gnesinka [82]

Answer:

Step-by-step explanation:

First, let's create variables:

s = startup division

e = established divisioN

The startup division made 80% of 1/2 of the established division.

Let's take a look at what the above statement means: Making 80% of 1/2 means...

0.8 of 1/2 = 0.8*0.5 = 0.4 --> s = 0.4e.

Next: The startup division’s growth was 1/3 greater than the established division’s.

Seems like this is additional information is not needed.

If the divisions made 280,000 combined, how much did the startup division make?

s + e = 280,000 --> s = 280,000 - e, then we can substitude s = 0.4e for s -->

280,000 - e = 0.4e --> 1.4e = 280,000 --> e = 200,000.

This means that s = 80,000.

MARK AS BRAINLEST PLZZZZZ

5 0

3 years ago

Find the area of a regular polygon with 100 sides with a perimeter of 100 units

Gnom [1K]

The area of any regular polygon with n sides of length s is

s = 100/100 = 1

Area =~ 795.55 sq units

4 0

3 years ago

Sarah had invested $800 in a savings account that paid 4.2% interest compounded annually. How much money was in the account afte

schepotkina [342]

Answer: $943.11

Step-by-step explanation:

Compound Interest formula is: $A=P(1+r)^t$ where

A is the Accrued amount (total earned)
P is the Principal (amount initially invested)
r is the interest Rate (convert percent to a decimal)
t is the Time (number of years)

It is given that; P = 800 r = 4.2% (0.042) t = 4

A = 800(1 + 0.042)⁴

A = 800(1.042)⁴

A = 943.106 → A = 943.11 (rounded to the nearest penny)

Sarah invested $800 for four years at an interest rate of 4.2% and accrued $943.11

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3 years ago