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3 years ago

In simplest radical form, what are the solutions to the quadratic equation 0 = –3x2 – 4x + 5?

1 answer:

4 0

- 3 x² - 4 x + 5 = 0
$x_{1} = \frac{4+ \sqrt{16+60} }{-6} = \frac{4+8.718}{-6}$
x1 = -2.12
$x_{2} = \frac{4-8.718}{-6}$
x2= 0.786

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Please answer this correctly without making mistakes

SCORPION-xisa [38]

First, multiply 1,127 & 1 by 2
1127 x 2 = 2254
1 x 2 = 2

so that’s 2,254 cups & 2 fl. ounces
since 8 fl. oz. make a cup, and we only have 2, the answer stays as it is

2,254 cups & 2 fl. ounces

4 0

3 years ago

What is the explicit equation for this series 25,21,17,13

Neko [114]

Answer:

The explicit rule is:

Step-by-step explanation:

The explicit rule is given by:

$a_n=a_1+d(n-1)$

The given sequence is 25,21,17,13

$a_1=25$

d=21-25

d=-4

We plug in the values into the formula to get;

$a_n=25+-4(n-1)$

$a_n=25-4n+4$

$a_n=29-4n$

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2 years ago

A purchaser of electric relays buys from two suppliers, A and B. Supplier A supplies two of every three relays used by the compa

Reptile [31]

Answer: Our required probability is 0.3162.

Step-by-step explanation:

Since we have given that

n = 60

Probability of success = $\dfrac{2}{3}$

Probability that at most 39 of these relays come from supplier A would be

$P(X\leq 39)=binomcdf(60,\dfrac{2}{3},39)=0.3162$

Hence, our required probability is 0.3162.

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2 years ago

An umbrella sprinkler is positioned on a ceiling at a point whose x- coordinate is 0. Negative values of a indicate distances, i

vodka [1.7K]

Answer:

-1/4x² + 3

Step-by-step explanation:

Given that:

Path of sprinkler is modeled by the quadratic function :

w(x) = -1/4(x^2 -12 )

w(x) = height of the water, in meters, at position x

The height of ceiling as a constant or Coefficient = w(x)

Expanding w(x)

-1/4(x^2 -12 )

-1/4 * x² + 1/4 * 12

-1/4x² + 3

The height of ceiling is -1/4x² + 3

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3 years ago

The clock was exactly on time at 7am at 1pm the clock was 228 seconds late at that rate how slow was the clock half an hour

yan [13]

Answer:

19 seconds.

Step-by-step explanation:

Given that the clock was exactly on time at 7am, and at 1pm the clock was 228 seconds late, to determine, at that rate, how slow was the clock half an hour, the following calculation must be performed:

1 PM = 13:00

13 - 7 = 6

228/6 = 38

38/2 = 19

Thus, every half hour the clock is delayed 19 seconds.

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2 years ago