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Fynjy0 [20]
3 years ago
11

Please help and explain!

Mathematics
1 answer:
Sphinxa [80]3 years ago
5 0
I think I'm not sure sorry if it's wrong

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Janine is saving money to buy a car. She has a total of $1400 left to save, and she plans to save a certain percentage of $1400
shusha [124]

Answer:

August=$350

September=$560

October=$210

November= $280

Step-by-step explanation:

Total amount left to save $1400.

We calculate the amount save each mount since we are already given the percentages.

For the month of August she saves 25% of $1400, we convert the percentage to equivalent cash

\frac{25}{100}*1400\\=350

for the month of August, she saved $350,

Next For the month of September she saves 40% of $1400, we convert the percentage to equivalent cash

\frac{40}{100}*1400\\=560

for the month of September, she saved $560,

Next For the month of October she saves 15% of $1400, we convert the percentage to equivalent cash

\frac{15}{100}*1400\\=210

for the month of October, she saved $210,

total amount saved by October = $350+$560+$210=$1120

Amount saved by November=1400-1120=$280

5 0
2 years ago
Use a calculator to evaluate 2^19 to the nearest ten thousandth.
Kitty [74]

Answer:

≈ 520 000

Step-by-step explanation:

2¹⁹=  524 288 ≈ 520 000

6 0
3 years ago
Brianna goes to the movies and must pay a 7% tax on the items she gets. She gets popcorn, soda, and twizzlers. These items come
alina1380 [7]

Find the amount of tax money she needed to pay

7% of 17.50

=7/100 * 17.50

=122.50/100

=1.22

Find the final sales price

17.50+1.22 = 18.72

5 0
3 years ago
Read 2 more answers
Find the circumference of a circle with a radius of 10 m. C = 2πr, where d=diameter and C = circumference. Use pi = 3.14.
Tju [1.3M]

Answer:

3.14×20

20=diameter

=62.8cm

4 0
3 years ago
Solve the equation by completing the square m^2+6m-77=-5
Grace [21]
Maybe you thought about this:
m^2+6m-77+5=0 => m^2+6m-72=0 => m^2+ 2*3*m+3^2-3^2-72=0
=> m^2+2*3*x+3^2= (m+3)^2 this is the complete square of the binomial, we will still keep it =>
(m+3)^2 -9 -72=0 => (m+3)^2 - 81 = 0 => (m+3)^2 - 9^2 = 0
Now we got the difference squares, it mean a^2 - b^2 = (a-b) (a+b)
In according to this => (m+3-9) (m+3+9) = 0 =>
(m-6) (m+12)=0 => m-6=0 or m+12=0 => m1=6 or m2= -12 !!!!
Are you satisfied with this solution?

6 0
2 years ago
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