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Rzqust [24]
2 years ago
14

7t-3t+4t-5t show working​

Mathematics
1 answer:
sukhopar [10]2 years ago
7 0

Answer:

3t

Step-by-step explanation:

7t-3t+4t-5t

Combine like terms

7t -3t = 4t and substitute back into the expression

4t +4t -5t

4t+4t = 8t and substitute back into the expression

8t - 5t

3t

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A charity organization had a fundraiser where each ticket was sold for a fixed price $70. They had to sell a few tickets just to
lina2011 [118]

Answer:

  p = 70n -1500

Step-by-step explanation:

The slope-intercept form of the equation is ...

  p = 70n +b

We know that p = -800 for n = 10, so we can find b:

  -800 = 70·10 +b

  -800 -700 = b = -1500

The net profit equation is ...

  p = 70n -1500

4 0
3 years ago
The volume of the pyramid shown is 70 m3. A rectangular pyramid with a base of 7 meters by 6 meters and a height of h. What is t
prohojiy [21]

Answer:

5 m is the correct answer on edge

Step-by-step explanation:

I did it on edge and got it correct

5 0
3 years ago
I need help now, plz and thank you
MrRa [10]

Answer:

24

Step-by-step explanation:

3 Suit types, 2 Wig types, and 4 Talents.

3 X 2 X 4 = 24

7 0
2 years ago
Find the exact value of cos(a+b) if cos a=-1/3 and cos b=-1/4 if the terminal side if a lies in quadrant 3 and the terminal side
maria [59]

Answer:

cos(a + b) = \frac{1}{12}(1-2\sqrt{30})

Step-by-step explanation:

cos(a + b) = cos(a).cos(b) - sin(a).sin(b) [Identity]

cos(a) = -\frac{1}{3}

cos(b) = -\frac{1}{4}

Since, terminal side of angle 'a' lies in quadrant 3, sine of angle 'a' will be negative.

sin(a) = -\sqrt{1-(-\frac{1}{3})^2} [Since, sin(a) = \sqrt{(1-\text{cos}^2a)}]

         = -\sqrt{\frac{8}{9}}

         = -\frac{2\sqrt{2}}{3}

Similarly, terminal side of angle 'b' lies in quadrant 2, sine of angle 'b' will be  negative.

sin(b) = -\sqrt{1-(-\frac{1}{4})^2}

         = -\sqrt{\frac{15}{16}}

         = -\frac{\sqrt{15}}{4}

By substituting these values in the identity,

cos(a + b) = (-\frac{1}{3})(-\frac{1}{4})-(-\frac{2\sqrt{2}}{3})(-\frac{\sqrt{15}}{4})

                = \frac{1}{12}-\frac{\sqrt{120}}{12}

                = \frac{1}{12}(1-\sqrt{120})

                = \frac{1}{12}(1-2\sqrt{30})

Therefore, cos(a + b) = \frac{1}{12}(1-2\sqrt{30})

5 0
3 years ago
‼️ PLEASEE HELPPP ‼️
Naddik [55]

Answer:

30

Step-by-step explanation:

3x - 27 = x +11

3x -27 +27 = 11 + 27

3x - x = x -x + 38

2x = 38

2x ÷ 2 = 38

X = 19

19 × 3 -27 = 30

4 0
2 years ago
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