What is the answer to this equation for into math .com 10q+5r−q+4r=

Mathematics

1 answer:

maxonik [38]3 years ago

3 0

Answer:

Step-by-step explanation:

I hope it helps you

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The formula A equals =P left parenthesis 1 plus r right parenthesis squared (1+r)2 gives the amount A in dollars that P dollars

vlabodo [156]

The interest rate is 3.5%.

EXPLANATION

We substitute the given values into the formula;

$A=P(1+\frac{r}{100})^t$

to obtain

$6427.35=6000(1+\frac{r}{100})^2$

We divide through by 6000 to obtain,

$\frac{6427.35}{6000}=(1+\frac{r}{100})^2$

This implies that,

$1.071225=(1+\frac{r}{100})^2$

We take the square root of both sides,

$\sqrt{1.071225}=(1+\frac{r}{100})$

This gives us,

$1.035=(1+\frac{r}{100})$

Add -1 to both sides of the equation to obtain

$0.035=\frac{r}{100}$

Multiply through by 100 to obtain;

$r=3.5$ %

$Therefore the rate is 3.5%$

3 0

3 years ago

A drawer has some red, green, and blue marbles. There are 33 marbles in all. Thete are 4 times as many red marbles as green marb

Vinvika [58]

Let:
x - green marbles
4x - red marbles
x/2 - blue marbles

$x+4x+\frac{x}{2}=33|\cdot2\\
2x+8x+x=66\\
11x=66\\
\boxed{x=6}\\\\
\boxed{4x=24}\\\\
\boxed{\frac{x}{2}=3}
$

6 0

3 years ago

8) <br> Solve using the Quadratic Formula.<br><br> x2 + 3x - 5 = 0

maks197457 [2]

Step-by-step explanation:

$x^{2} + 3x - 5$

For any quadratic equation $ax^{2} + bx + c = 0$ , the quadratic formula is as follows:

$\frac{-b \pm \sqrt{b^{2} - 4ac}}{2a}$

From the given quadratic equation, we know that $a = 1$ , $b = 3$ and $c = -5$ . Plugging in these values into the quadratic formula gives us the following: