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OleMash [197]
3 years ago
6

4.

Mathematics
1 answer:
Anna71 [15]3 years ago
6 0

Answer:

  $12600

Step-by-step explanation:

If x represents the total investment, then the total interest is ...

  (x/3)(0.02) +(x/3)(0.07) +(x/3)(0.08) = 714

  x(.17) = 2142 . . . . multiply by 3; collect terms

  x = 2142/0.17 = 12600

The total investment was $12,600.

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Calcular la edades actuales de una madre y sus dos hijos sabiendo que hace 14 años la dad de la madre era 5
rodikova [14]

The present age of mother and her daughter respectively are; 40 and 10 years respectively.

<h3>How to Solve Algebra Word Problems?</h3>

Let x and y be the present age of mother and her daughter respectively.

Therefore;

x + y = 50

x = 50 − y     .....(1)

After 20 years, mother's age will be twice her daughter's age at the time. Thus;

x + 20 = 2(y + 20)

x − 2y = 20     .....(2)

Plugging eq 1 into eq 2 gives us;

50 − y − 2y = 20

3y = 30

y = 10

Thus;

x = 50 − 10

x = 40

Thus, the present age of mother and her daughter is 40 and 10 years respectively.

Translation of the question into English is;

The sum of the present ages of mother and her daughter is 50 years. After 20 years, mother's age will be twice her daughter's age at the time. Find their present ages.

Read more about Algebra Word Problems at; brainly.com/question/21405634

#SPJ1

6 0
2 years ago
What’s the answer to this?
Elina [12.6K]

Step-by-step explanation:

Line is passing through the points:

(-2,\:3)=(x_1,\:y_1) \:\&\: (2,\:5)=(x_2 ,\:y_2)

Equation of line in two point form is given as:

\frac{y -y_1 }{y_1 -y_2 } = \frac{x -x_1 }{x_1 -x_2 } \\ \\ \therefore \frac{y -3}{ 3 -5} = \frac{x -(-2) }{-2 -2} \\ \\ \therefore \frac{y -3}{ - 2} = \frac{x -(-2) }{-4} \\ \\ \therefore \frac{y - 3}{1} = \frac{x +2}{2} \\ \\ \therefore \: y-3= \frac{x}{2} + \frac{2}{2} \\ \\\therefore \: y= \frac{x}{2} + 1 +3\\ \\ \huge \red{ \boxed{\therefore \: y= \frac{1}{2} \:x+ 4}}\\ is \: the \: required \: equation \: of \: line.

4 0
3 years ago
Emma works in a department store selling
IceJOKER [234]

Answer:

$320

Step-by-step explanation:

She made $800 of sales right and her paid commision is 15% so there she receives:15%×$800=$120+a guaranteed $200 dollars each week =$320

7 0
3 years ago
Please help I'll mark brainliest
Lynna [10]

Answer:

A , line of equation A is steeper

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Help me out please!!!!!
MAVERICK [17]

Answer:

the answer is D

Step-by-step explanation:

that is R ND Q re on the same line as well as S ND

6 0
3 years ago
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