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kykrilka [37]
3 years ago
5

Estaban is 6 years older than his brother Raoul. The sum of their ages is 38. How old are the brothers?

Mathematics
1 answer:
Over [174]3 years ago
8 0

Answer:

raoul is 16 and estaban is 22

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Write the quadratic equation whose roots are 6 and -4 , and whose leading coefficient is 5. (Use the letter x to represent the v
BaLLatris [955]

The quadratic equation for this would be f(x) = 5x^2 - 10x - 120.

In order to find that, we need to start by taking our x intercept values and setting them equal to zero.

x = 6 ----> subtract 6 from both sides

x - 6 = 0

x = -4 ----> add 4 to both sides

x + 4 = 0

Now that we have both of these zero terms, we can multiply them to get a standard form.

f(x) = (x - 6)(x + 4)

And while this will give us the zeros we need, it will no give us the lead coefficient. So we must multiply by the desired lead coefficient.

f(x) = 5(x - 6)(x + 4)

f(x) = 5(x^2 - 6x + 4x - 24)

f(x) = 5(x^2 - 2x - 24)

f(x) = 5x^2 - 10x - 120

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3 years ago
What is a number increased by 7.9 is 8.3
alexira [117]
First, write an equation

x+7.9= 8.3

Now solve for x.

x=0.4


6 0
3 years ago
Cesar did 100 math problems for homework during 1 school week (5 days) How many problems did he do each day? How many math probl
vampirchik [111]
First the question asks you how many problems Cesar did per day in a 5 day school week. We know that he did 100 problems in that 5 day week, so you should divide 100 by 5 to get 20. Now we know that Cesar does 20 problems per day. Now the question want you to find how many problems he would do if this rate keeps up in three 5 day weeks. We know that he does 100 problems in a five day week, so multiply 100 by 3 to get 300. So Cesar does 300 percent problems in three weeks and 20 problems in one day.
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3 years ago
6th-grade math help me, please
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Answer:

a) is 41

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Find the area of the regular<br> pentagon.<br> 5.5 cm<br> 8 cm
faust18 [17]

Answer:

Area = 110 cm²

Step-by-step explanation:

You can find the area of a regular pentagon by finding the area of one of the triangles created by its central angle and multiplying it by 5.

1. Use the formula for the area of a triangle to find the area of the triangle formed by its central angle.

A = \frac{1}{2} bh\\\\A = \frac{1}{2}8(5.5)\\\\A = \frac{1}{2}44\\\\A = 22

2. Multiply this area by 5 to get the area of the entire pentagon.

A = 22(5)

A = 110

7 0
3 years ago
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