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3 years ago

Simplify (7x^2 + 3y-4)+(5x^2+5y)

1 answer:

5 0

\left[x _{2}\right] = \left[ \left( \frac{1}{6}\,i \right) \,\sqrt{3}\,\sqrt{\left( -4+8\,y\right) }\right][x2]=[(61i)√3√(−4+8y)] totally answer

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Find the side lengths of the triangle in this picture.

ozzi

Answer:

Hypotenuse: 41 meters, Long leg: 40 meters, Short leg: 9 meters.

Step-by-step explanation:

According to the statement, we have the following information about the lengths of the right triangle:

Hypotenuse

$3\cdot x + 14$

Long leg

$3\cdot x + 13$

Short leg

$x$

By the Pythagoric Theorem, we have the following expression:

$(3\cdot x + 14)^{2} = x^{2} + (3\cdot x + 13)^{2}$ (1)

$9\cdot x^{2}+84\cdot x + 196 = x^{2} + 9\cdot x^{2} + 78\cdot x + 169$

$9\cdot x^{2} + 84\cdot x + 196 = 10\cdot x^{2} + 78\cdot x +169$

$x^{2} -6\cdot x -27 = 0$

$(x-9)\cdot (x+3) = 0$

As length is a positive variable by nature, then the only possible solution is $x = 9$ . Lastly, the side lengths of the right triangle are:

Hypotenuse: 41 meters, Long leg: 40 meters, Short leg: 9 meters.

8 0

3 years ago

If m∠2=39 and m∠3=30, what is m∠1?

satela [25.4K]

Answer:

The answer would be A.) 111

Step-by-step explanation:

The angles of any triangle must add up to 180. So you subtract ∠1 and ∠2 from 180 and you will get the 3rd angle.

7 0

3 years ago

Sara says, "If you subtract 15 from my number and multiply the difference by -7, the result is -133. What is sara's number

Delvig [45]

Answer:

Step-by-step explanation:

-133/-7=19+15=39

check:39-15=19

19x(-7)=-133

7 0

3 years ago

The pass mark for an exam is 92% <br> abbi scored 62 out of 68 <br> does she pass the exam

BartSMP [9]

Answer:

68/100*92= 62.56

No abbi does not pass exam.

7 0

3 years ago

Read 2 more answers

Hi pls help this is TIMED

alexandr1967 [171]

What is the question you have?

3 0

3 years ago