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3 years ago

11

-2+3y=7 2x -5y=-3 Pleaseeeeeeer help

1 answer:

Alja [10]3 years ago

8 0

I want to ask something

do you mean

-2x+3y=7 or just 12+3y=7

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Find the compound interest on $12000 for 3 years at 10% per annum compounded annually.

harkovskaia [24]

Answer: 15,600

Step-by-step explanation: hope it helps

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3 years ago

Emily is entering a bicycle race for charity. Her mother pledges $0.20 for every 0.25 mile she bikes. If Emily bikes 4 miles, ho

konstantin123 [22]

16 o think i might be wrong but i did the math

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3 years ago

Read 2 more answers

A culture started with 3,000 bacteria. After 8 hours, it grew to 3,300 bacteria. Predict how many bacteria will be present after

Sav [38]

Answer:

$3,462\ bacteria$

Step-by-step explanation:

In this problem we have a exponential function of the form

$y=a(b^x)$

where

x is the time in hours

y is the numbers of bacteria

a is the initial value

b is the base

r is the rate of growth

b=(1+r)

we have that

$a=3,000\ bacteria$

For x=8, y=3,300

substitute in the exponential function

$3,300=3,000(b^8)$

solve for b

$1.1=(b^8)$

$b=\sqrt[8]{1.1}$

$b=1.0120$

Find the value of r

$r=b-1=1.0120-1=0.0120=1.20\%$

The equation is equal to

$y=3,000(1.012^x)$

For x=12 hours

substitute the value of x in the equation

$y=3,000(1.012^{12})$

$y=3,462\ bacteria$

8 0

4 years ago

Help! Translate what the problem

Rufina [12.5K]

I dont' know im soooo sorry for not knowing

3 0

3 years ago

SOMEONE HELP ME PLEASE ASAP!!!

GrogVix [38]

Answer:

600

Step-by-step explanation:

0+.80x=60+.70x

-.70x=60-.70x

.10x=60

÷.10=÷.10

C=600

0+.80(600)=480

60+.70(600)=480

8 0

3 years ago