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3 years ago

Plz help me!!! 56 points and brainliest!!!

Mathematics

1 answer:

dsp733 years ago

4 0

Answer:

For this equation to be true, a must = 13 and b must = 10 + 2i.

Step-by-step explanation:

First combine the numerators: 3 + 5 + 2i + 2, or 10 + 2i.

Next, multiply the denominators: 4 + 9 = 13

Then rewrite the original equation as:

10 + 2i a

---------- * ---- = 1

13 b

For this equation to be true, a must = 13 and b must = 10 + 2i.

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4x^2-4x=+1 by factoring

Alina [70]

Answer:

Below.

Step-by-step explanation:

4x^2 - 4x - 1 = 0

This will not factor.

But 4x^2 - 4x + 1 = 0 will:

= (2x - 1)(2x - 1) = 0

x = 0.5 (*2)

7 0

3 years ago

Write an expression equivalent to 5x squared-15x

ExtremeBDS [4]

The answer is 5(x squared-3x)
It is distributive property

5 0

3 years ago

Bottles of sparkling water usually cost $1.69. The grocer changed the price to 4 for $5. You bought one bottle last week for $1.

sleet_krkn [62]

Given :

Cost of single bottle, C = $1.69 .

Cost of 4 bottles, B = $5 .

You bought one bottle last week for $1.69 and one bottle this week at the 4 for $5 price.

To Find :

Did you pay more or less for the bottle this week at 4 for $5? How much more or less?

Solution :

Effective price per bottle if we purchase 4 is, E = 5/4 = $1.25 .

Regular price, R = $1.69 .

Change in price, C = $( 1.69 - 1.25 ) = $0.44 .

Therefore, we are paying $0.44 less than the actual price.

Hence, this is the required solution.

8 0

3 years ago

Read 2 more answers

How many yards are in 33.9 feet?<br>Round to 2 decimal places if necessary.

NNADVOKAT [17]

There are 11.3 yards in 33.9 feet!

Step-by-step explanation:

8 0

3 years ago

Write parametric equations of the line through the points (7,1,-5) and (3,4,-2). please use the first point as your base-point w

Roman55 [17]

Given:

A line through the points (7,1,-5) and (3,4,-2).

To find:

The parametric equations of the line.

Solution:

Direction vector for the points (7,1,-5) and (3,4,-2) is

$\vec {v}=\left$

Now, the perimetric equations for initial point $(x_0,y_0,z_0)$ with direction vector $\vec{v}=\left$ , are

$x=x_0+at$

$y=y_0+bt$

$z=z_0+ct$

The initial point is (7,1,-5) and direction vector is $\vec {v}=\left$ . So the perimetric equations are

$x=(7)+(-4)t$

$x=7-4t$

Similarly,

$y=1+3t$

$z=-5+3t$

Therefore, the required perimetric equations are $x=7-4t, y=1+3t$ and $z=-5+3t$ .

5 0

3 years ago