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3 years ago

Ahsan

Mathematics

1 answer:

NikAS [45]3 years ago

7 0

It is number 1 and number 2 because the equation is 242× 62 and Number 1 and 2 are just breaking it down

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Ewan is building a maze for his pet rats out of 2x4s. He needs two pieces that are 2 ¾ feet long, one that is 3.5 feet long and

Hatshy [7]

2 pieces at 2 3/4 feet is 2 x 2 foot 9 inches = 5 foot 6 inches

1 piece that is 3.5 feet is 3 feet 6 inches

2 pieces that are 1 5/8 feet are 2 x 1 foot 7 1/2 inches = 3 feet 3 inches

I think there should be more to the question. If you are looking for the best combination to buy it would be two 7 foot boards

4 0

4 years ago

2x^2-28=10x<br> Factor then solve?

maria [59]

2x^2-28=10x

x^2-14=5x

x^2-5x-14=0

(x-7)(x+2)=0

x = 7, -2

4 0

3 years ago

Read 2 more answers

Please help, having allot of trouble with this ;-;

nevsk [136]

A.32
Should be the answer

6 0

3 years ago

Use the discriminant to determine the number and type of solutions for the following equation. 12x2 + 10x + 5 = 0

Paul [167]

Discriminant D is given by:
D=b²-4ac
Implication of discriminant is as follows:

D<0 two zeros that are complex conjugate
D=0 one real zero of multiplicity 2
D>0 two distinct real zers
D= (+ve perfet square) two distinct rational zeros
From:
12x^2+10x+5=0
plugging in the equation we get:
10²-4×12×5
=100-240
=-140
thus
D<0

Answer is:
<span>A two irrational solutions </span>

4 0

4 years ago

Read 2 more answers

On a multiple choice test with 17 questions, each question has four possible answers, one of which is correct. For students who

Ira Lisetskai [31]

<h2>The required "option c) 4.3" is correct.</h2>

Step-by-step explanation:

Given,

Total number of multiple choice questions = 17

To find, the mean for the number of correct answers = ?

Each question has four possible answers.

If guessing at random:

There is only one in four chances.

$\dfrac{1}{4}\times 100$ = 25 % chance of getting a particular question right.

This is the same probability for each of the 17 questions.

If there is a 25 % chance of getting any given question right.

There are 17 questions.

∴ The total number of questions you will expect to get right =

25 % × 17

= $\dfrac{25}{100} \times 17$

= $\dfrac{17}{4}$

= 4.25

≈ 4.3

∴ The mean for the number of correct answers = 4.3

Thus, the required "option c) 4.3" is correct.

3 0

4 years ago