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2 years ago

Help please if u You don’t know it please don’t answer.

Mathematics

1 answer:

Bogdan [553]2 years ago

5 0

I believe the answers are the following:

5. x = ±3.4641i

6. x = ±7

hope this helped! please mark brainliest if you get the chance :)

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Five decreased by twice a number is same as five less than<br> three times the number.

sergejj [24]

Answer: If you are suppose to write an algebraic expression it is: 5 - 2x = 3x - 5
If you are suppose to solve the answer is:
5-2x=3x-5
-2x=3x-10
-5x=-10
x=2

8 0

2 years ago

Question 1

wlad13 [49]

You can draw vertical line, and get 2 rectangles.
1) First one with sides 2 and 7.
2) Second one with sides 1 and (5-2) = 3, 1 and 3.

3) Area of the first one =2*7=14 units²
4)Area of the second one = 1*3=3 units²

5) Area of the whole polygon = 14+3=17 units²

Answer C. 17units².

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3 years ago

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larisa [96]

Answer:

Step-by-step explanation:

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3 years ago

The equation that passes through (3,6) and is perpendicular to 3x - 4y = - 2

Fynjy0 [20]

Answer:

Step-by-step explanation:

We want the equation of the line that passes through (3, 6) and is perpendicular to:

$3x-4y=-2$

First, convert the second equation into slope-intercept form:

$-4y=-3x-2\Rightarrow \displaystyle y=\frac{3}{4}x+\frac{1}{2}$

So, we can see that the slope of the line is 3/4.

The slopes of perpendicular lines are negative reciprocals of each other.

Therefore, the slope of the new line is -4/3.

It passes through the point (3, 6).

We can use the point-slope form:

$y-y_1=m(x-x_1)$

Substitute:

$\displaystyle y-(6)=-\frac{4}{3}(x-3)$

Distribute:

$\displaystyle y-6=-\frac{4}{3}x+4$

Therefore:

$\displaystyle y=-\frac{4}{3}x+10$

The answer is C.

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2 years ago

An average library contains at least 50 and at most 250 books. How many library owners must be polled to be certain that at leas

Marta_Voda [28]

Math - Steve, Wednesday, May 7, 2014 at 4:35pm
there are 201 numbers from 50 to 250.

So, clearly, if 202 people are polled, at least two of them must have the same number.

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3 years ago