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Misha Larkins [42]
3 years ago
8

How old am I if 400 reduced by 3 times my age is 241

Mathematics
2 answers:
lubasha [3.4K]3 years ago
6 0
The answer is 5. Hope this helped.
fenix001 [56]3 years ago
5 0

Answer:

Step-by-step explanation:

5

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Help please. Screenshot included.
Alla [95]

The following information will help us with this problem:

\sqrt[m]{x^n} = x^{\frac{n}{m}


When we use that information in the context of this problem, we can find:

\sqrt[4]{15^7} = 15^{\frac{7}{4}}


Thus, a = 15, b = 7, and c = 4.

4 0
3 years ago
Linda won $200,000 in a state lottery. She first paid income tax on 30% on the winnings. She invested some of the rest at 1.5% a
Lady_Fox [76]

She invested $ 50000 at 1.5% rate and $ 90000 at 4% rate.

<u><em>Explanation</em></u>

Total amount of winnings = $ 200000

She first paid income tax on 30% on the winnings. So, the amount paid as income tax =(200000*0.30)dollar=60000 dollar.

<u>Remaining amount</u> = $ 200000 - $ 60000 = $ 140000

Suppose, she invested  x dollar at 1.5% rate.

That means, she invested (140000-x) dollar at 4% rate.

Given that, the total amount of interest earned = $ 4350

So, the equation will be.....

0.015x+0.04(140000-x)=4350\\ \\ 0.015x+5600-0.04x=4350\\ \\ -0.025x= 4350-5600\\ \\ -0.025x=-1250\\ \\ x= \frac{-1250}{-0.025}=50000

So, amount of investment at 1.5% rate = $ 50000

and amount of investment at 4% rate = $ 140000 - $ 50000 = $ 90000  


5 0
3 years ago
Suppose A is an invertible n×n matrix and v is an eigenvector of A with associated eigenvalue 4. Convince yourself that v is an
mote1985 [20]

The eigenvector of matrix A4 is 4096.

The eigenvalue of the matrix A-1 is 1/8.

(A+4I) has an eigenvalue of 12.

40 is the eigenvalue of 5Av.

The collection of scalar values known as the eigenvalues of a matrix are connected to the set of linear equations that are most likely contained within the matrix equations.

The eigenvectors are also known as the characteristic roots.

If the matrix A's eigen vector v is linked to an eigen value.

Av then equals lamda v.

The fact that v is an eigen vector of A with the value eight is assumed.

hence, Av = 8v.

We must determine the eigenvalue of A4.

A4*v equals A3(8v) = 84*v equals 4096v.

As a result, the eigenvalue of A4 is 4096.

Suppose A has an eigenvalue of 8. The eigenvalue of A-1 is thus 1/8.

It is calculated that the eigenvalue of (A+4I) is (A +4In)v = Av + 4v = 8v + 4v =12v.

(A+4I) has an eigenvalue of 12.

The value of 5Av's eigenvalue is 5Av = 5*8v = 40v.

40 is the eigenvalue of 5Av.

Learn more about the eigen vectors here:

brainly.com/question/15423383

#SPJ4

7 0
1 year ago
one half of a box of cereal is filled with marshmallows of those marshmallows, one sixth of them are green how much of the box i
Bumek [7]

Answer:

Hopefully, I am correct is it 1/4??

Step-by-step explains:

(Sorry If I am wrong I just guessed.)

8 0
3 years ago
A study at a college in the west coast reveals that, historically, 45% of their students are minority students. if a random samp
Evgesh-ka [11]
100 percent because 45 % is always in between 30 and 50 %
5 0
3 years ago
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