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Elena L [17]
3 years ago
9

PLEASE ANSWER PRETTY EASY BUT NEED HELP!!! LOTS OF POINTS AND BRAINLIEST :)

Mathematics
1 answer:
AnnZ [28]3 years ago
5 0

Answer:

0

Step-by-step explanation:

Make and equation and solve for x.

(2x+10)^2 = 4(x-5)^2 Now the easiest thing to do is use the formula for squared binomial, (a+b)^2 = a^2 + 2ab + b^2.

4x^2 + 40x + 100 = 4(x^2 - 10x + 25)

4x^2 + 40x + 100 = 4x^2 - 40x + 100

From hear you can cancel out similar terms

40x + 100 = - 40x + 100

40x = -40x

add 40x to both sides

80x = 0

x = 0

The only solution to this is 0.

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Explain why 6^3x7^3=42^3 is correct.
Orlov [11]

Answer:

{6}^{3} \times {7}^{3}  =  {(6 \times 7)}^{3}  =  {42}^{3}

Step-by-step explanation:

When two or more quantities have the same exponents, their bases can be multiplied together.

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3 years ago
If two consecutive angles of a parallelogram are congruent, what is the measure of each angle?
Debora [2.8K]

Answer:

Measure of each angle is 90 degree.

Step-by-step explanation:

Given : If two consecutive angles of a parallelogram are congruent.

To find the measure of each angle:

There are 6 important properties of parallelograms:

  • Opposite sides are congruent.
  • Opposite angles are congruent
  • Consecutive angles are supplementary.
  • If one of the angle is right angle, then all angles are right.
  • Diagonals of a parallelogram bisect each other
  • Also, each diagonal of a parallelogram separates it into two congruent.

let A and D be two consecutive angle.

then, by the given condition

\angle A \cong \angle D           ......[1]

From the  property of parallelogram:

Consecutive angles are supplementary

Then;

\angle A + \angle D = 180^{\circ}

From equation [1];

\angle A + \angle A = 180^{\circ}

Combine like terms :

2\angle A = 180^{\circ}

Divide both sides by 2 we get;

\frac{2 \angle A}{2} = \frac{180^{\circ}}{2}

Simplify:

\angle A = 90^{\circ}

From the given property of parallelogram : if one of the angle is right, then all the angles in the parallelogram are right angle.

∴ \angle A = \angle B = \angle C = \angle D = 90^{\circ}

Therefore, the measure of each angle is 90^{\circ}

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If you spin the spinner 40 times, how many 4'
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Answer:

10

Step-by-step explanation:

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