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3 years ago

NEED TO KNOW ASAP PLEASE HELP

Mathematics

1 answer:

AnnyKZ [126]3 years ago

5 0

Answer:

You are squaring x and -5 on the first equation, and on the second equation you are just squaring x and subtracting 5.

Step-by-step explanation:

And since on the first equation x and -5 are in parenthesis that means that the square goes to both of them.

And the second one there is no parenthesis so the square only goes to the x.

I hope this helps you.

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2y-1/-3 =-5 prove y=8 What are the statements and reasons for this questions?

Paraphin [41]

Answer:

I will provide the steps below.

Step-by-step explanation:

First, You will need to plug in the 8.

2(8)-(1/-3)=-5

Multiply

16-(-1/3)=-5

If we have two negitive it turns into possitive.

16+1/3=-5

This statement is not true becuase if y=8 the equation will be (16+1/3)=5

*Make sure your giving me the right eqution otherwise this statment is false.*

8 0

3 years ago

Pure mathematicsssss

stepan [7]

Answer:

(i) a = 2

b = -1

c = -1

(ii) x= 1

Step-by-step explanation:

Step 1: Factorise

$f(x) = 2(x^{2} -2x+\frac{1}{2})$

Step 2: Use the complete square method.

$f(x)=2(x^{2} -2x+(\frac{-2}{2})^{2} + \frac{1}{2} - (\frac{-2}{2})^{2} )$

Step 3: Have it to $a(x+b)^{2} +c$

$f(x)=2((x-1)^{2} -\frac{1}{2} )\\ = 2(x-1)^{2} -1$

Line of symmetry:

To find line of symmetry, we use -b/2a formula.

Based from $2x^{2} -4x+1$ :

a=2, b=-4

-b/2a = -(-4)/2(2) = 1

3 0

3 years ago

Please help AGAIN PLEASE?

vagabundo [1.1K]

Answer:

C. T

Step-by-step explanation:

5 0

3 years ago

Earth’s surface is approximately 70% water. There is no water on the surface of Mars, and its diameter is roughly

Pie

Answer:

Earth

Step-by-step explanation:

You don't need scientific notation.

The areas of similar figures are proportional to the square of their linear scale factor. If Mars is 1/2 the diameter of Earth, its total surface area is (1/2)² = 1/4 that of Earth.

That is, the land area of Mars is 25% of the total area of Earth.

The land area of Earth is 1-70% = 30% of the total area of Earth. 30% is more than 25%.

Earth has more land area than Mars.

8 0

4 years ago

if laura bikes x miles to and from her friend's house each day, what expression can be used to calculate the total distance she

boyakko [2]

The expression to find total miles is
total miles=7x
Because there is 7 days in the week and she bikes x miles each of the 7 days.

3 0

3 years ago

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