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2 years ago

Can someone plz help me plz I beg uuuu plz I will really appreciate it

Mathematics

2 answers:

charle [14.2K]2 years ago

8 0

X is equal to 45 because the whole thing is supposed to equal 180

melisa1 [442]2 years ago

7 0

Answer:

x=45

Step-by-step explanation:

(2x+10) + 30 + 50 = 180

2x+10+30+50 = 180

2x+90=180

2x=90

x-45

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Create an equation with a solution closest to 0 using digits 1 to 9

steposvetlana [31]

Complete Questions:

Create an equation with a solution closest to 0 using digits 1 to 9

_x + _ = _x + _

Answer:

See Explanation

Step-by-step explanation:

Given

_x + _ = _x + _

Required

Fill in the gap using 1 to 9 to give a result close to 0

First, you have to determine what kind of numbers that are close to 0;

In this case, I'll work with -0.4 to 0.4 because the number in this range approximate to 0;

Next, is to fill in the gaps using trial by error method

5x + 2 = 2x + 3

Checking the above expression

Collect Like Terms

$5x - 2x = 3 - 2$

$3x = 1$

Divide equation by 2

$x = 0.33$ (Approximated)

Another trial is

6x + 8 = 2x + 7

Checking the above expression

Collect Like Terms

$6x - 2x = 7 - 8$

$4x = -1$

Divide equation by 4

$x = -0.25$ (Approximated)

I'll stop here but note that, there are more expressions that can fill in the gaps

6 0

3 years ago

If the original rectangle has an area of 2 cm squared and the scaled copied has an area of 50 cm squared what is the scale facto

vazorg [7]

Answer:

The scale factor used to draw the scaled copy is a factor of 5

Step-by-step explanation:

Here, we are interested in calculating the scale factor which was used to transition the original rectangle to the new scaled copy.

Firstly, there is a way to relate how the scale factor of the sides relate to the scale factor of the area. What we are saying here is that the scale factor of the sides is never equal to that of the area;

For a 2 cm^2 area let’s say the sides are 1 by 2 ; this gives us an area as said

Now, to get 50cm^2, we can see that the scale factor of both areas is 25 (2 to 50)

So the area has been scaled 25 times the original area. So how has the sides been scaled?

Using a general principle, the scale used to scale the area is the square of the scale used to scale the sides. What are we saying here? if the area is scaled by 4, then the sides are scaled by 2

So in this particular case, the area is scaled by a factor of 25

Now, the scale factor of the sides will be the positive square root of this which is 5

Hence, we can conclude that the sides of the smaller triangles were each multiplied by 5 to arrive at the sides of the bigger one which makes it that the scale factor used to draw the scaled copy is 5

8 0

3 years ago

Is this relation a function? yes no

kvv77 [185]

Answer:

Step-by-step explanation:

2 points have the same "x"

6 0

3 years ago

Read 2 more answers

At a local prechool there i a ratio of 3 boy to every 4 girl. If there are 245 total prechooler how many are boy

Georgia [21]

If there are 245 total preschoolers, there will be 105 boys.

What is unitary method?
The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units. What can be values and units.
Let's say you go to the store to buy six apples. You are informed by the shopkeeper that he is offering 10 apples for Rs 100. In this instance, the value and the units are the price of the apples.
Recognizing the units and values is crucial when using the unitary technique to a problem.
Always write the items that need to be computed on the right side and the things that are known on the left side to simplify things. We are aware of the quantity of apples and the amount of money in the aforesaid problem.

acc to our question-

Fraction of boys = 3/7
Fraction of girls = 4/7
Total number of students = 245
The number of boys will be:
= 3/7 × 245.
= 105 boys

Therefore, there are 105 boys in the school.

learn more about unitary method click here:

brainly.com/question/24587372

#SPJ4

3 0

1 year ago

Find an equation of the line perpendicular to y = -1/2x – 3 that crosses the point

alisha [4.7K]

Answer:

y = 2x + 4

Step-by-step explanation:

y = - $\frac{1}{2}$ x - 3

Slope of perpendicular line is "2"

( - 3 , - 2 )

y + 2 = 2( x + 3 )

y = 2x + 4

6 0

3 years ago