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3 years ago

What is the answer? please

Mathematics

1 answer:

liubo4ka [24]3 years ago

5 0

Answer:

2 $x^{2}$ -2 $x$ +3

Step-by-step explanation:

Take both polynomials out of parenthesis, then combine like terms.

5 $x^{2}$ -3 $x^{2}$ =2 $x^{2}$

6 $x$ -8 $x$ = $-2x$

$-7+10=3$

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Solve?????????????????

Shtirlitz [24]

Answer,

x = 5/2 + 1/2 √57 or x = 5/2 + -1/2 √57

Explanation,

Step 1: Use quadratic formula with a=1, b=-5, c=-8.

It's kinda hard to type out again so I just took a pic :-)

8 0

3 years ago

The nth term of a sequence is 3n+5 to the 6th terms sequence

Maslowich

Answer:

Hey!

The 6th term of your sequence is 23!

Step-by-step explanation:

This is how you get it...

1) T6=3n+5 (the 6th term and the equation...)

2. We now do T6=3(6)+5 (3 x 6 then add 5)

3. In other words... T6=18+5

4. We work it out 18 + 5 = 23

HOPE THIS HELPS!!

7 0

3 years ago

If x=7cm what is the surface area of the geometric shape formed by this net

Mekhanik [1.2K]

There are four rectangles and 2 squares.

Let’s start with the four rectangles.
4 [ 2x(x)]
4 [ (2*7)(7)] = 392 cm^2
______________

Next, let’s find the SA for the two squares.
2 [(2x)^2]
** I need to be clear that both the 2 and the x in the parentheses are squared because the square, of course, is a “perfect square”. This was probably obvious and needless to say, haha oh well.
Next step: plug in values
2 [ [2(7)]^2 ] = 392 cm^2

TOTAL: 392+392 = 784 cm^2

Wow I should have realized the the 4 rectangles are the area as the two squares.

Good luck to you!
If you have any other math questions, I can try my best to answer them. Just send me a comment or whatever works.

7 0

3 years ago

Help me please I’m confused

Digiron [165]

Find ab….using your calculator

4 0

2 years ago

If an injectable solution contains 25μg of a dug substance in each 0.5 mL, how many milliliters would be required to provide a p

Kay [80]

Answer:

5mL would be required to provide a patient with 0.25 mg of the drug substance.

Step-by-step explanation:

The problem states that an injectable solution contains 25μg of a dug substance in each 0.5 mL, and asks how many milliliters would be required to provide a patient with 0.25 mg of the drug substance.

So, the first step is the conversion of 25ug to mg, since the problem asks the answer in mg.

Each mg has 1000ug. So

1mg - 1000ug

xmg - 25ug

1000x = 25

$x = \frac{25}{1000}$

x = 0.025 mg

It means that each 0.5mL of the solution contains 0.025mg of the drug. How many milliliters would be required to provide a patient with 0.25 mg of the drug substance.

0.5mL - 0.025mg

xmL - 0.25mg

0.025x = 0.5*0.25

$x = \frac{0.5*0.25}{0.025}$

x = 10*0.5

x = 5mL

5mL would be required to provide a patient with 0.25 mg of the drug substance.

6 0

3 years ago

What is the answer? please ​

What is the answer? please