3 years ago

Last summer, Betty earned $4200 by painting houses. She invested

Mathematics

1 answer:

Musya8 [376]3 years ago

3 0

x*(1.035) + (4,200-x)*(1.045) = 4,374.00

1.035x + 4,389.00 -1.045x = 4,374.00

15.00 = .01x

x = 1,500 so x (1,500) invested at 3.5% and

(4,200 - 1,500) (or 2,700) invested at 4.5%

You might be interested in

Help on number 2 please

Katarina [22]

Answer:

y=12.73 x=9

Step-by-step explanation:

3 0

3 years ago

If you flip a coin 150 times about how many times would you expect to get heads

meriva

A coin has two sides, which means it has a 1/2 chance of landing on each individual side when you flip the coin. Since there is a 1/2 chance of landing on each side, you could expect the coin to land on "Heads' 75 times.

3 0

3 years ago

PLS HELP WILL MARK AS BRAINLIST

kykrilka [37]

Answer:

Step-by-step explanation:

x = -6 ± 3√2

x = -6 + 3√2

x = -6 - 3√2

5 0

2 years ago

Read 2 more answers

Consider this expression.

schepotkina [342]

Answer:

$9m^2 + 17m- 9$

Step-by-step explanation:

Given

$7m^2 + (2m - 1)(m + 9)$

Required:

Simplify

We start by opening the bracket

$7m^2 + (2m(m + 9) - 1(m + 9))$

$7m^2 + 2m^2 + 18m - m - 9$

Collect Like Terms

$9m^2 + 17m- 9$

Hence, the equivalent expression is $9m^2 + 17m- 9$

5 0

3 years ago

Round to the nearest million: 21,800,000

Eduardwww [97]

21,800,000 rounded to the nearest million = 22,000,000

5 0

3 years ago