All categories

3 years ago

Karina needs a total of $45 to buy her mother a birthday present. She has saved 20% of the amount so far. How much has she saved

Mathematics

2 answers:

professor190 [17]3 years ago

7 0

Answer:

$9.00

Step-by-step explanation:

$45.00x20%=9

Nadusha1986 [10]3 years ago

7 0

Answer:

Step-by-step explanation:

$45 X .2 = $9

You might be interested in

Math help questions

Evgen [1.6K]

After 1 year, the initial investment increases by 7%, i.e. multiplied by 1.07. So after 1 year the investment has a value of $800 × 1.07 = $856.

After another year, that amount increases again by 7% to $856 × 1.07 = $915.92.

And so on. After t years, the investment would have a value of $\$800 \times 1.07^t$ .

We want the find the number of years n such that

$\$856 \times 1.07^n = \$1400$

Solve for n :

$856 \times 1.07 ^n = 1400$

$1.07^n = \dfrac74$

$\log_{1.07}\left(1.07^n\right) = \log_{1.07}\left(\dfrac74\right)$

$n \log_{1.07}(1.07) = \log_{1.07} \left(\dfrac74\right)$

$n = \log_{1.07} \left(\dfrac74\right) = \dfrac{\ln\left(\frac74\right)}{\ln(1.04)} \approx \boxed{8.3}$

4 0

2 years ago

Read 2 more answers

What is the square root of 5000

valentinak56 [21]

the square root of 5000 is 71 (rounded to the nearest)

3 0

3 years ago

Read 2 more answers

An exponent shows how many times the base number is multiplied by itself.

Stells [14]

The answer is a. true.

7 0

3 years ago

last year, Nicole biked n miles. This year, she biked 524 miles. Using n, write an expression for the total number of miles she

Fittoniya [83]

Answer:

n+524

Step-by-step explanation:

you add both years worth of biking together!

7 0

3 years ago

3ln(4x)=13

Kryger [21]

3 * ln 4x = 13

<=> 

ln 4x = 13/3 

<=> 

4x = e^(13/3) 

<=> 

x = e^(13/3) / 4 

<=> 

x ~ 19.05

5 0

3 years ago