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frez [133]
3 years ago
6

Choose the correct simplification of (4x^3 - 3x- 7) + (3x^3 + 5x + 3)

Mathematics
1 answer:
jolli1 [7]3 years ago
8 0

Answer:

The correct answer is C. 7x^3 + 2x -4

Step-by-step explanation:

The other guys answer is incorrect. He gave himself 5 stars and it stayed like that until i took them down some

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Which postulate or theorem could be used to prove triangleLMQ is congruent to triangleLNP
Sliva [168]

The answer to this query is AA similarity postulate. <span>

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6 0
3 years ago
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If cos(x)=1/4 what is sin(x) and tan(x)
anygoal [31]
You can use the identity
  cos(x)² +sin(x)² = 1
to find sin(x) from cos(x) or vice versa.

  (1/4)² +sin(x)² = 1
  sin(x)² = 1 - 1/16
  sin(x) = ±(√15)/4


Then the tangent can be computed as the ratio of sine to cosine.
  tan(x) = sin(x)/cos(x) = (±(√15)/4)/(1/4)
  tan(x) = ±√15


There are two possible answers.
In the first quadrant:
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  tan(x) = √15

In the fourth quadrant:
  sin(x) = -(√15)/4
  tan(x) = -√15
3 0
3 years ago
Plz I need some help with 11-12 . My teacher didn’t even explain it correctly so now I’m confused.
rusak2 [61]

Answer:

Step 1: Transpose everything to one side

12. x²+16x+15-10x+4=0

Step 2: Add the like terms

x² + (16x - 10x) + 15 + 4=0

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Step 3: Use the quadratic formula to get the value(s) of x.

a=1 b=6 c=19

x =  \frac{ - b +  -  \sqrt{b {}^{2} - 4ac }  {}^{} }{2a}

therefore, x=... or x

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2 years ago
A car travels 76 km in 47 minutes.
Mumz [18]

Answer:

97km/h to 1dp

Step-by-step explanation:

47mins is 0.783 of an hour

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3 0
3 years ago
Which is equivalent to square root 10st x square root 15tu
aivan3 [116]

\sqrt{10st}\cdot\sqrt{15tu}=\sqrt{10st\cdot15tu}=\sqrt{150st^{2}u}=\sqrt{25\cdot6\cdot st^{2}u} =   \\\\= \sqrt{5^{2} \cdot t^{2}\cdot6 \cdot su}=5t\sqrt{6su}

4 0
3 years ago
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