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2 years ago

Did I do this right help need to know now

Mathematics

2 answers:

stepan [7]2 years ago

6 0

He's u did correctly by using P E M D A S

slega [8]2 years ago

5 0

You got all of the questions right. :)

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Answer this Q QUIQLY PLZ

MariettaO [177]

Answer: 3. HAVE AN AMAZING DAY

8 0

3 years ago

Pls answer ASAP neeeddd

Anna007 [38]

Answer:

The answer is Tangent.

Step-by-step explanation:

Given that Tangent Rule is tanθ = opposite/adjacent. In this question, opposite is 11, adjacent is x and θ is 21°.

So using this formula, you are able to find the value of x.

7 0

3 years ago

What number is equivalent to 3/4 b-2/3 b =-9

Shtirlitz [24]

Hi,

$b = - 9 \\ \frac{3}{4} \times b - \frac{2}{3} \\ 0.75 \times - 9 - 0.67 \\ - 6.75 - 0.67 = - 7.42$

Answer: -7.42

Hope this helps.
r3t40

5 0

3 years ago

5.) Simplify the following polynomial. -6x3+5x-3-(2x3+4x2-3x+1)

Vera_Pavlovna [14]

Answer:

-8x3 - 4x2 + 8x - 4

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Solve x2 − 10x = −13.

aev [14]

Answer:

Step-by-step explanation:

First, let's rearrange the given equation into something more recognizable. If we add 13 to both sides, we now have the polynomial $x^{2}-10x+13$ . We can now use the quadratic formula to solve.

Remember that the quadratic formula is

$\frac{-b+/-\sqrt{b^{2}-4ac } }{2a}$

Substitute the numbers from the equation into the formula.

$\frac{-(-10)+/-\sqrt{(-10)^{2}-4(1)(13) } }{2(1)}$

Simplify:

$\frac{10+/-\sqrt{100-52} }{2}$

$\frac{10+/-\sqrt{48} }{2}$

Here, I'm going to assume that there was a mistype in option B because if we divide out the 2 we end up with $5+/-\sqrt{48}$ .

Hope this helps!

6 0

2 years ago