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Ostrovityanka [42]
3 years ago
12

Martha deposits $500 in an account that pays 6% simple interest, and $1000 in a second account which has a higher interest rate

but is more risky. What interest rate must she get on the second account in order to earn at least $130 in interest for the year?
Mathematics
1 answer:
Degger [83]3 years ago
7 0
$1000 x r%= 130
Since we can't move r% back two places to change it to a decimal, we can move the decimal by on the $1000.

Why?   Is .47 x 53 the same as 47 x .53?  (yes)  - Do you see that is does not matter whether the decimal is moved back two places on one or the other?

So
$1000 can become 10 by moving it back two places.
10r = 130 

<u>10</u>r   = <u>130
</u>10         10      divide both sides by 10 and you get 13%
<u>
Check</u>  1000 x .13 = $130
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Sergio [31]

Given:

The functions are:

f(x)=|3x-5|+7x

g(x)=-2x+9

To find:

The function (f+g)(x).

Solution:

We have,

f(x)=|3x-5|+7x

g(x)=-2x+9

We know that,

(f+g)(x)=f(x)+g(x)

On substituting the values of given functions, we get

(f+g)(x)=|3x-5|+7x+(-2x+9)

(f+g)(x)=|3x-5|+7x-2x+9

(f+g)(x)=|3x-5|+5x+9

Therefore, the required function is (f+g)(x)=|3x-5|+5x+9.

7 0
3 years ago
70% of the 100 students in the middle school bother lunch some of the students at bought their launch leave to attend an assembl
sukhopar [10]
42 students remain in the cafeteria
7 0
3 years ago
To prove that the triangles are similar by the SAS similarity theorem, it needs to be shown that
vesna_86 [32]

Answer:

The triangle has two sides that are equivalent and the angle where the two meet are also equivalent.

In other words, two sides and the angle between them are congruent.

Hope this helps, if it does please give me brainliest, it will help me a lot :)

Have a good day

3 0
3 years ago
Jasper has an annual salary of $71000 and his company pays him twice a month. What is the gross income per paycheck that Jasper
Sliva [168]

Answer:

$2,958.33

Step-by-step explanation:

Jasper's annual salary is $71000.

Considering that a year has 12 months and that he gets a paycheck twice each month, the total number of paychecks (P) Jasper gets each year is:

P = 12*2 = 24

To define Jasper's gross income per paycheck (I), simply divide his annual salary by the number of paychecks in a year:

I=\frac{\$ 71,000}{24} \\I=\$ 2,958.33

Jasper's gross income per paycheck is $2,958.33.

3 0
3 years ago
What is 55 rounded by 2 of the nearest hundred
Lelu [443]
It would be 100. Because let's say you had to round 25 to the nearest 10 it would be 30 because everything ending with 5 (example: 5 to nearest 10 would go to 10 65 to the nearest ten would go to 70) but anything lower then 5 goes to the lower number.
8 0
3 years ago
Read 2 more answers
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