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ikadub [295]
3 years ago
15

if you didnt have a potractor,how could you reconstruct the quarter or it from 0 degrees to 90degrees

Mathematics
1 answer:
sergiy2304 [10]3 years ago
4 0
43. Without having a protractor, how can we construct the quarter or it from 0 degrees to 90 degrees. This question is very simple. There are a lot of ways of how constructing a right angle without using a protractor. One of the easiest way is creating a straight vertical line then connect another horizontal from from vertical’s end on the bottom to the right or left. By that you can have a right angle or 90 degrees.
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In Mrs Phillips math class the ratio of boys to girls is 4 to 2. If there are 51 girls in math class, how many boys are there?
maksim [4K]
So for every two girls, there's four boys. There are twice as many boys than girls, so the number of girls • 2 = your answer.

51 • 2 = 102
7 0
3 years ago
Which construction could be used to construct an isosceles triangle ABC given line
Free_Kalibri [48]

Answer:

In the given two column proof two sides and included angles are equal.

Triangles are congruent if any pair of corresponding sides and their included angles are equal in both triangles .In the figure sides BD≅BD , AB≅ BC and <ABD ≅,BDD Therefore triangle ABD and triangle CBD are congruent by SAS property of congruence.

4 0
2 years ago
X^4-28x^2=0 solve algebraically
Paha777 [63]
x^4 - 28x^2  = 0

x^2(x^2 - 28) = 0

x^2 = 0 \ \ or \ \ (x^2 - 28) = 0

x = 0 \ \ or \ \ x^2 = 28

x = 0 \ \ or \ \ x = \pm \sqrt{28}

x = 0 \ \ or \ \ x = \pm2 \sqrt{7}

---------------------------------------------------
Answer : x = 0 or 2√7 or -2√7
---------------------------------------------------
8 0
3 years ago
The graph of f(x) = x2 is shifted 3 units to the right to obtain the graph of g(x). Which of the following equations best descri
alexgriva [62]

Answer:

g(x)=(x+3)^2

Step-by-step explanation:

f(x) = x^2

The graph is shifted 3 units to the right

(x+3)^2

g(x)=(x+3)^2

5 0
3 years ago
Read 2 more answers
The ratio of the geometric mean and arithmetic mean of two numbers is 3:5, find the ratio of the smaller number to the larger nu
IgorC [24]

Answer:

\frac{1}{9}

Step-by-step explanation:

Let the numbers be x,y, where x>y

The geometric mean is

\sqrt{xy}

The Arithmetic mean is

\frac{x + y}{2}

The ratio of the geometric mean and arithmetic mean of two numbers is 3:5.

\frac{ \sqrt{xy} }{ \frac{x + y}{2} }  =  \frac{3}{5}

We can write the equation;

\sqrt{xy}  = 3

or

xy = 9 -  -  - (2)

l

and

\frac{x + y}{2}  = 5

or

x + y = 10 -  -  - (2)

Make y the subject in equation 2

y = 10 - x -  -  - (3)

Put equation 3 in 1

x(10 - x) = 9

10x -  {x}^{2}  = 9

{x}^{2}  - 10x + 9 = 0

(x - 9)(x - 1) = 0

x =1  \: or \: 9

When x=1, y=10-1=9

When x=9, y=10-9=1

Therefore x=9, and y=1

The ratio of the smaller number to the larger number is

\frac{1}{9}

3 0
3 years ago
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