Plzzz helppp!! 9-4x=17????

Mathematics

1 answer:

AnnyKZ [126]3 years ago

6 0

Answer:

<h3> $\boxed{ \bold{ \boxed{ \sf{x = - 2}}}}$ </h3>

Step-by-step explanation:

$\sf{9 - 4x = 17}$

Move 9 to right hand side and change it's sign

⇒ $\sf{ - 4x = 17 - 9}$

Subtract 9 from 17

⇒ $\sf{ - 4x = 8}$

Divide both sides of the equation by -4

⇒ $\sf{ \frac{ - 4x}{ - 4} = \frac{8}{ - 4}}$

Calculate

⇒ $\sf{x = - 2}$

Hope I helped!

Best regards!!

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dolphi86 [110]

As this rectangle has it's sides parallel to x axis and y axis

it is easy to find the length of it's sides by counting the number of blocks on each sides.

Let us first find co ordinates of all four points

we would calculate them left and right and up down direction from the origian ( the cross point of x and y axis )

A : it is 2 unit left 2 unit up ( -2 , +2 )

B is 5 unit right 2 unit up ( +5 ,+2)

C is 5 unit right 2 unit down ( +5,-2)

D is 2 unit left 2 unit down ( -2,-2)

Let us now find the distance AB : A is 2 unit left B is 5 unit right so length AB= 2+5 = 7

Let us now find distance AD : A is 2 unit up and D is 2 unit down

so length AD= 2+2= 4

Answer should be 7 x 4 units

5 0

2 years ago

Read 2 more answers

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;

$r=3.5$ %

$Therefore the rate is 3.5%$