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3 years ago

-3n^2-13n +1= 0 need this asap. i’m lost.

Mathematics

1 answer:

lesya692 [45]3 years ago

6 0

Answer:

if you're trying to find the discriminant, then it's 181.

Step-by-step explanation:

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Becky made 2 video tapes while a giant hummingbird fed 4 times and a ruby throated hummingbird fed 8 times from her new feeder.

AURORKA [14]

8 feedings because she recorded it two times and giant humming Bird fed it 4x so 4×2=8

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3 years ago

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Sweet t purchased a new pair of jeans to wear at the battle of the bands on sale at 40% off.He saved $20 what was his regular pr

Oliga [24]

If he got the jeans for 40% off he paid 60% of the cost for the jeans. With that you can setup an equation.

20 is 60% of what number

is signifies equals and of signifies multiplication

20 = 0.6*x
x = 20/.6
x = 33.33

The regular price of the jeans is $33.33

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3 years ago

What is 6 to the fourth power times 6 to the fourth power

wel

Answer:

6^8

Step-by-step explanation:

6^4 * 6^4

We know that a^b * a^c = a^(b+c)

6^4 * 6^4 = 6^(4+4) = 6^8

7 0

3 years ago

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Research what is something times something equals 43

Bad White [126]

43 is a prime number, so

it has factors only 1 and 43, You can write only 43*1=43.

5 0

2 years ago

The shorter leg of a right triangle is 5 inches shorter than the longer leg. The hypotenuse is 5 inches longer than the longer l

Licemer1 [7]

Answer:

longer leg: 20 in

shorter leg: 15 in

hypotenuse: 25 in

Formulas:

<u>Pythagorean Theorem</u>

$c^2 = a^2 + b^2$

c ... hypotenuse

a ... one leg

b ... another leg

Pythagorean theorem is used in right triangles (triangles in which one angle is 90°).

Step-by-step explanation:

longer leg: x

shorter leg: x - 5

hypotenuse: x + 5

To find x (longer leg), let's use Pythagorean theorem.

$c^2 = a^2 + b^2\\(x+5)^2 = x^2 + (x-5)^2\\x^2 + 10x + 25= x^2 + x^2 -10x + 25\\x^2 + 10x = 2x^2 - 10x\\0 = x^2 - 20x$

Now let's factorize to get solutions for x.

$0 = x(x-20)$

First solution:

$x = 0$

Second solution:

$x - 20 = 0\\x = 20$

Since a side of a triangle has to be a positive number, x is equal to 20.

Now let's just substitute x back to get side lengths. From the question the lengths are in inches.

longer leg: x = 20 in

shorter leg: x - 5 = 20 - 5 = 15 in

hypotenuse: x + 5 = 20 + 5 = 25 in

6 0

2 years ago