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Svetlanka [38]
3 years ago
10

Solve by factorisation 2x^2+3x-20=0

Mathematics
1 answer:
kiruha [24]3 years ago
3 0

Answer:

(2x-5)(x+4)

....................

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Is sarah faster than Katie? and what is the average rate?​
slamgirl [31]

Step-by-step explanation:

here's the solution: -

Average time taken by sarah :

=》

\frac{79 + 70 + 68 + 75 + 69 + 64 + 69 + 75 + 64 + 76}{10}

=》

\frac{709}{10}

=》

70.9

average time taken by sarah = 70.9 seconds

now,

average time taken by katie :

=》

\frac{ 79 + 79 + 76 + 81 + 89 + 76 + 64 + 85 + 82 + 78}{10}

=》

\frac{789}{10}

=》

78.9

average time taken by katie = 78.9 seconds

so, sarah is more efficient (faster) than katie.

i agree with sarah.

cuz, she took less time than katie.

7 0
3 years ago
Read 2 more answers
Use distributive property to solve, show all steps <br> 3(2x-6)
zlopas [31]

Answer:

6x-18

Step-by-step explanation:

First we multiply everything in the parentheses by 3

3×2x=6x

3×(-6)=-18

And now we put it together-

6x-18

4 0
2 years ago
Read 2 more answers
Help please this is due today
dangina [55]

The experimental probability that in a group of 4 students, at least one of them has brown eyes is 95%.

<h3>What is Experimental Probability?</h3>

Experimental probability is a probability that is determined on the basis of a series of experiments. A random experiment is done and is repeated many times to determine their likelihood and each repetition is known as a trial. The experiment is conducted to find the chance of an event to occur or not to occur.

Here , Favorable Outcome = 19

          Total outcomes = 20

Probability = Favorable Outcome/ Total Outcome

                   = 19 / 20

                   = 95%

Thus, the experimental probability that in a group of 4 students, at least one of them has brown eyes is 95%.

Learn more about Experimental Probability from:

brainly.com/question/15729871

#SPJ1

5 0
2 years ago
Are the answers for 1-3 correct? I need help with 4 and 5!!! Please!
vovangra [49]
1.

a. 12d² -6d

b. 6c^5 + 8c^4 -10c³

c. correct

2. 

a. correct

b. correct

c. 12r^8-6r^4 + 9r^2, then multiply the rest by -1

3. correct

4. x² + 10

5. d=4, -1/3
8 0
3 years ago
Read 2 more answers
3842532 nearest 1000
hichkok12 [17]
You're answer would be 3843000 because the number in the hundredths place is 5 so you would round up your answer
5 0
3 years ago
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