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3 years ago

Someone please help me

Mathematics

1 answer:

padilas [110]3 years ago

7 0

7A. 45+10=55 So 55 is in all of them whole integer and rational numbers 8A. Is no yes yes B.a 9.A > 10.a

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AC is tangent to circle O at point C. What is the length of OC

Sedaia [141]

Let OC is x, so OC=OB=x

${4}^{2} + x^{2} = {(2 + x)}^{2} \\ 16 + {x}^{2} = 4 + 4x + {x}^{2} \\ 12 = 4x \\ x = 3$

Answer: OC=3 points

6 0

3 years ago

If CDE ~ GDF, find ED

qaws [65]

Answer:

Step-by-step explanation:

$\triangle CDE \sim \triangle GDF.. (given) \\\\\therefore \frac{CD}{GD} =\frac{DE}{DF}.. (csst) \\\\\therefore \frac{15}{x+3} =\frac{3x+1}{4}\\\\ \therefore \: 15 \times 4 = (x + 3)(3x + 1) \\ \\ \therefore \: 60 = 3 {x}^{2} + x + 9x + 3 \\ \\ \therefore 3 {x}^{2} + 10x + 3 - 60 = 0 \\ \therefore 3 {x}^{2} + 10x - 57 = 0 \\ \therefore 3 {x}^{2} + 19x - 9x - 57 = 0 \\ \therefore \: x(3x + 19) - 3(3x + 19) = 0 \\\therefore \: (3x + 19)(x - 3) = 0 \\ \therefore \: 3x + 19 = 0 \: \: or \: \: x - 3 = 0 \\ \therefore \: x = - \frac{19}{3} \: \: or \: \: x = 3 \\ \because \: x \: can \: not \: be \: - ve \\ \therefore \: x = 3 \\ ED = 3x + 1 = 3 \times 3 + 1 \\ \huge \red{ \boxed{ ED= 10}}$

7 0

3 years ago

Given an expression can you write an equivalent form of the expression and explain the properties you used?

weeeeeb [17]

What is the expression? Tell me and I will help you.

6 0

3 years ago

point A is at (-5,-4) and point M is at (0,-3.5).Point M is the midpoint of point A and point Bwhat are the coordinates of point

velikii [3]

Answer:

point b is at 5,-3

you have to go 5 past and .5 up

6 0

3 years ago

the length of a rectangle is equal to triple the width . if the perimeter is 8 centimeters .what is the length and the width of

madam [21]

Answer:

Length = 3 cm

Width = 1 cm

Step-by-step explanation:

Let the length of rectangle be l and width of rectangle be w.

According to problem,

l = 3w {Length of rectangle is equal to triple the width}

And Perimeter,P = 8 cm

Since, P = 2 ( l + w )

or 8 = 2( l + w)

Plug l =3w in the above perimeter equation.

We get:

8 = 2( 3w + w)

8 = 2(4w)

8 = 8w

or w = 1 cm

Then length ,l = 3w =3 * 1 = 3 cm

Hence length of rectangle is 3cm and width of rectangle is 1cm.

3 0

3 years ago