3 years ago

How do I do this??? I need help please

Mathematics

1 answer:

Rufina [12.5K]3 years ago

3 0

Answer:

5; 10; 20.

Step-by-step explanation:

the 1st step is shown with orange colour, described on the right part; the 2d step is shown with blue colour, described on the right part of the picture.

You might be interested in

7x – 4 and 6x – 4 – x are equivalent using the interactive tool.

ss7ja [257]

7X-4=6X-4-X
7X-6X+X=0
2X=0
X=0

5 0

3 years ago

Read 2 more answers

Solve the quadratic equation x2+8x−30=0 by completing the square.

diamong [38]

Answer:

$\bold{x=-4\pm\sqrt{46}}$

Step-by-step explanation:

$(a+b)^2=a^2+2ab+b^2\\\\\\x^2+8x-30=0\\\\\underbrace{x^2+2\cdot x\cdot 4+4^2}-4^2-30=0\\\\{}\qquad(x+4)^2\,-\,16-30=0\\\\{}\qquad\ \ (x+4)^2=46\\\\ {}\qquad\ \ x+4=\pm\sqrt{46}\\\\ {}\qquad\ \ x=-4\pm\sqrt{46}$

5 0

3 years ago

A cyclist rides her bike at a speed of 30 kilometers per hour. What is this speed in kilometers per minute? How many kilometers

Nata [24]

Step-by-step explanation:

The answer is mentioned above.

3 0

3 years ago

CS Algebra

CaHeK987 [17]

Answer:

Hope this helps :)

Step-by-step explanation:

8(x - 2) = 2x + 8

y+9 = -2(y + 1)

value of x in 8(x - 2) = 2x + 8

x=4

substitue

y+9=−2(y+1)

value of y y+9=−2(y+1)

y= - 11/3 or 3.66...

x=4

y=4 (I rounded 3.66)

4 0

2 years ago

Are these triangles congruent? If so, why?

N76 [4]

<h3>Yes the triangles are congruent by ASA axiom or congruency .</h3>

Because one side of triangle is equal and two angles are equal . So option 1 is your answer .

5 0

3 years ago