Pls help bc i need this it is 20 points, no guessing

A positive number is 30 less than its square. Find the number.

Veronika [31]

x = x^2 - 30

or

x^2 - x - 30 = 0
Factors to
(x-6)(x+5) = 0

x = +6 is the positive number

8 0

4 years ago

The cosst of 4 1 /4 kg of sugar is £68 .find the coast o 1 kg

ankoles [38]

Step-by-step explanation:

Hi, there!!

Here according to the question we must find the cost of 1 kg sugar.

Given that:

17/4 kg of sugar cost £68.

then 1 kg sugar costs,

= $\frac{68}{ \frac{17}{4} }$ 

after reciprocal we get,

= £68×4/17

=£16

The answer would come £16.

Therefore, The cost of 1 kg sugar is £. 16.

Hope it helps....

8 0

3 years ago

Read 2 more answers

a bowl contains 24 marbles consisting of 6 whilte, 8 blue 7 black and 3 red. WHat is the probaility of drawing a black marble?

Anit [1.1K]

Probability helps us to know the chances of an event occurring. The probability of choosing a black marble from the bowl is 0.2917.

<h3>What is Probability?</h3>

Probability helps us to know the chances of an event occurring.

Probability=(Desired Outcomes)/(Total Number of possible outcomes)

The total number of marbles in the bowl is 24, while it contains 6 white, 8 blue, 7 black and 3 red. Therefore, the probability of choosing a black marble from the bowl is,

P(Black marble) = Number of black marble/Number of total Marble

P(Black Marble) = 7/24 = 0.2917

Hence, the probability of choosing a black marble from the bowl is 0.2917.

Learn more about Probability:

brainly.com/question/795909

#SPJ1

5 0

3 years ago

Help i need help really fast before tomorrow pleasee

marusya05 [52]

Answer:

3 and 1/24

Step-by-step explanation:

8 and 5/12 - 5 and 3/8 = 73/ 24 or 3 and 1/24

5 0

3 years ago

Someone please help??

ivolga24 [154]

(B) is your answer for sure is what i would say

3 0

4 years ago