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2 years ago

Find the x (6x-27) (4x+7) =

Mathematics

2 answers:

Temka [501]2 years ago

6 0

Answer:

6x-27=0 or 4x+7=0

6x=27 4x=-7

x=27/6 x=-7/4

x=4,5 x=-1,75

There for : x=4,5 or x=-1,75

babunello [35]2 years ago

5 0

this question is wrong

(6X-27)(4X+7)=????

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Divide the following complex numbers: <img src="https://tex.z-dn.net/?f=%282%20%2B%20i%29%20%5Cdiv%20%281%20-%204i%29" id="Te

Dmitrij [34]

Answer:

$-\dfrac{2}{17} + \dfrac{9}{17}i$

Step-by-step explanation:

$(2 + i) \div (1 - 4i) =$

$= \dfrac{2 + i}{1 - 4i}$

$= \dfrac{2 + i}{1 - 4i} \times \dfrac{1 + 4i}{1 + 4i}$

$= \dfrac{(2 + i)(1 + 4i)}{(1 - 4i)(1 + 4i)}$

$= \dfrac{2 + 8i + i + 4i^2}{1 + 16}$

$= \dfrac{2 + 9i - 4}{17}$

$= \dfrac{-2 + 9i}{17}$

$= -\dfrac{2}{17} + \dfrac{9}{17}i$

8 0

3 years ago

There is a 6.5% tax on a $750 refrigerator. How much is paid altogether for the refrigerator?

Hitman42 [59]

Answer:

The total price of the refrigerator is $798.75.

Step-by-step explanation:

6.5% of $750 is $48.75

So, $750 plus $48.75 equals $798.75.

3 0

3 years ago

Find the slope of the line that passes through (4,2) and (9,1)?

pshichka [43]

Answer:

The slope of the line is $\displaystyle -\frac{1}{5}$ .

Step-by-step explanation:

We are given two coordinate points:

$(4, 2)$
$(9, 1)$

We are asked to find the slope of the line.

We can use the rise-over-run formula to solve for the slope of the line.

$\displaystyle \text{slope} = \frac{\text{rise}}{\text{run}}\\\\\text{slope} = \frac{y_2-y_1}{x_2-x_1}$

However, we firstly need to name our coordinate points.

In math, we can label our coordinates using the following label system:

$(x_1, y_1), (x_2, y_2)$

Therefore, we can also label our coordinates as such:

$x_1 = 4$
$y_1 = 2$
$x_2 = 9$
$y_2 = 1$

Now, we can supply these values into the formula and solve for our slope, or a better known variable, m.

$\displaystyle m = \frac{1 - 2}{9 - 4}\\\\m = \frac{-1}{5}\\\\m = -\frac{1}{5}$

Therefore, our slope is $\displaystyle -\frac{1}{5}$ .

8 0

3 years ago

Read 2 more answers

The measure of ∠ABD is (0.18x+54)° and the measure of ∠CBD is (0.07x+39)°. find the value of x.

snow_lady [41]

Answer:

x = 348

Step-by-step explanation:

From the given we can tell it a supplementary angle.

Don't know what supplementary angle is?

Supplementary angle are angles that :

Equal 180 °

Solve:

Since,

∠ABD is (0.18x+54)°

∠CBD is (0.07x+39)°

Thus,

(0.18x+54) + 0.07x + 39 = 180

Group likes terms:

0.25x + 54 + 39 = 180

0.25 + 93 = 180

Subtract 93 from both sides

0.25x = 87

x = 348

Check Answer:

0.18(348) + 54 + 0.07(348) + 39

= 180

8 0

2 years ago

Find the value of x. A. 7 B. 3 C. 5 D. 35

Ghella [55]

ZW = WM and YP = PT

This means line PW is the middle of the shape.

PW = 29

YZ = 23

29-23 = 6

There is a difference of 6 btween the top line and the middle line, so there needs to be a difference of 6 from ther middle line to the bottom line.

The bottom line needs to equal: 29 +6 = 35

11x +2 = 35

Subtract 2 from each side:

11x = 33

Divide both sides by 11:

x = 33/11

x = 3

The answer is B.

6 0

4 years ago