4 years ago

I need help with precalc question

Mathematics

1 answer:

MaRussiya [10]4 years ago

6 0

Answer:

Step-by-step explanation:

You might be interested in

I NEED HELP WITH THIS:

ELEN [110]

The answer is B.........

6 0

3 years ago

Read 2 more answers

The diagram shown is two intersecting lines. The measure of 5 is 47°.

Bingel [31]

Answer:

a) 37º

b) 143º

c) 2x - 5 = 143

Step-by-step explanation:

a) Angles 5 and 7 are vertical angles and therefore have the same measurements.

b) Angles 5 and 6 form a straight line and are therefore supplementary (add up to 180º). 180 - 37 = 143.

c) We found the measure of angle 6 is 143º in part b. We can set that equal to 2x - 5. Therefore the equation is 2x - 5 = 143.

5 0

2 years ago

How are the step by step math problem suppose to be for this math problem (-2-8)^2?

Sidana [21]

Answer:

the answer is 100

Step-by-step explanation:

(-2-8)^2

(-2-8)(-2-8)

-2(-2-8)-8(-2-8)

4+16+16+64

20+80

100

6 0

3 years ago

Which is the correct form of the quadratic formula? A) x = b ± b2 - 4ac a B) x = b ± b2 - 4ac 2a C) x = - b ± b2 - 4ac a D) x =

DochEvi [55]

That's pretty ill-formatted but the answer is D

$ax^2 + bx + c = 0$

has roots given by

$x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

Bonus quadratic formulas:

The Shakespeare Quadratic Formulas ( $2b$ or $-2b$ ) are:

$x^2 - 2bx + c \textrm{ has zeros at }x=b \pm \sqrt{b^2-c}$

$ax^2 - 2bx + c \textrm{ has zeros at }x=\frac 1 a( b \pm \sqrt{b^2-ac})$

4 0

4 years ago

Mr. Smith tells you that a right triangle has a hypotenuse of 19 and a leg of 10. He asks you to find the other leg of the trian

ad-work [718]

Answer: Since it is not a perfect square my answer is the square root of 261 or 16.16 which is rounded to the nearest hundredth.

Step-by-step explanation:

10^2 + b^2 = 19^2

100 + b^2 = 361

-100 -100

b^2 = 261

b= $\sqrt{261}$

3 0

3 years ago