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4 years ago

DOWOLKOR b. 7 + 2x = 4x - 3 What is the value of x to make both sides even?

Mathematics

2 answers:

vlada-n [284]4 years ago

7 0

Answer:

x = 5, It is not possible to make both sides even.

Step-by-step explanation:

Step 1:

7 + 2x = 4x - 3

Step 2:

7 = 2x - 3

Step 3:

10 = 2x

Answer:

x = 5

Hope This Helps :)

ser-zykov [4K]4 years ago

6 0

Answer:

it's not possible

Step-by-step explanation:

we need to make

$7+2x$ even

and

$4x-3$ also even

but we can't

in the first one

$2x$ is even no matter what value of x

so to an even you add and odd you get?

odd

so we cannot make 2x+7 even

nor 4x-3

because

4x=2(2x)

and to an even substract an odd you get?

odd

so you cannot make both sides even

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Solve the following equations for 0 ≤ theta ≤ 360º cosec(2 — 45°) = 2

lions [1.4K]

Step-by-step explanation:

here ,

$cosec \alpha = \frac{1}{ \sin( \alpha ) }$

now,

cosec(2-45°)=2

or,

1/sin(2-45°) =2

or,

1/sin2cos45°-cos2sin45=2

or,

$\frac{1}{ \sin(2) \frac{1}{2} - \cos(2) \frac{1}{2} } = 2$

or,

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2 years ago

Identify the type of conic section that is represented by the equation y^2- 1 = 4(x-7). DUE IN 2 HOURS, will give BRAINLIEST! A.

Elenna [48]

Answer:

Solution : Parabola

Step-by-step explanation:

As you can see only one variable is square in this situation, so it can only be a parabola. We can prove that it is a parabola however by converting it into standard form (x - h)^2 + (y - k)^2.

$y^2-1=4\left(x-7\right) = y^2-1=4\left(x-7\right)$

Respectively it's properties would be as follows,

$\left(h,\:k\right)=\left(\frac{27}{4},\:0\right),\:p=1$

8 0

3 years ago

The figures are similar. Find the missing length.

saw5 [17]

Step-by-step explanation:

<h2>Answer:-</h2><h3>Given ,</h3>

The figure is Similar.

Observation:-

Similar figures have similar sides. If we see carefully in smaller triangle, 3 has been added to each side and they are similar. We need to find y.

We have :-

5+3=8 as similar sides.

So, applying same algorithm,

$y + 3 = 5$