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2 years ago

Can anyone help me do or solve these

Mathematics

1 answer:

Ivahew [28]2 years ago

4 0

Answer:I will just post them

Step-by-step explanation:

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A class is made up of 10 boys and 4 girls. Half of the girls wear glasses. A student is selected at random from the class what i

ZanzabumX [31]

Answer:

2/14 or 1/7

Step-by-step explanation:

Half the girls where glasses so 2 girls.

there are only 2 girls that wear glasses out of all the 14

so the answer is 2/14

8 0

3 years ago

Read 2 more answers

What is the solution to the following equation? x2 + 3x + 4 = 0

andreev551 [17]

Answer:

$x=\dfrac{-3\pm \sqrt7i}{2}$

Step-by-step explanation:

The given equation is $x^{2}+3x+4=0$ .

We need to find the solution of the above equation.

The solution of an equation $ax^2+bx+c=0$ is :

$x=\dfrac{-b\pm \sqrt{b^2-4ac} }{2a}$

We have, a = 1, b = 3 and c = 4

$x=\dfrac{-3+ \sqrt{(3)^2-4(1)(4)} }{2}, \dfrac{-3- \sqrt{(3)^2-4(1)(4)} }{2}\\\\=\dfrac{-3+\sqrt{9-16}}{2}, \dfrac{-3-\sqrt{9-16}}{2}\\\\=\dfrac{-3\pm \sqrt7i}{2}$

So, the solution of the given equation is $\dfrac{-3\pm \sqrt7i}{2}$ .

5 0

3 years ago

What is the area of the parallelogram?

Fed [463]

Answer:80cm^2

Step-by-step explanation:

Area of a parallelogram=base×height

In the above diagram we were given a base of 16cm and height of 5cm

Therefore area of the parallelogram=16×5 which is equal to 80cm^2

8 0

2 years ago

Please help me!

Natali5045456 [20]

Answer:

Photo Lab: $y$ =3.20x +8

Specialty Photos: $y$ =2.60x + 10

Step-by-step explanation:

At the Photo Lab, the cost is $3.20 per roll plus 8 per print.

Therefore, the cost of developing a roll of film is:

$y$ =3.20x +8

At Specialty Photos the cost is $2.60 per roll plus 10 per print.

Therefore, the cost of developing a roll of film is:

$y$ =2.60x + 10

7 0

1 year ago

PLEASE HELP!! Fr do anything

Eduardwww [97]

Answer:

1)=38 /// 2)=116 /// 3)=102 /// 4)=41

Step-by-step explanation:

7 0

3 years ago