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labwork [276]
3 years ago
7

Evaluate: 12y+9d if y = 5 and d = 7

Mathematics
2 answers:
Roman55 [17]3 years ago
6 0

Answer:

123

Step-by-step explanation:

12y + 9d

12(5) + 9(7)

60 + 63

123

shepuryov [24]3 years ago
3 0

Answer:

123

Step-by-step explanation:

Substitute values of y and d into equation.

12y+9d = 12(5) + 9(7)

Evaluate.

12(5) + 9(7) = 60 + 63

Simplify.

60 + 63 = 123

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Find two positive angles and two negative angles that are coterminal with the given angle and less than 1080 but greater than 72
ivann1987 [24]

Answer:

The correct answer is 450°, 810°, -270° and -630°.

Step-by-step explanation:

According to the given scenario, the calculation of the two positive angles and two negative angles i.e. coterminal is as follows:

The coterminal angles are the angles in which the difference could be 360 degrees or the multiples of 360 degrees

For 90 degrees, the two positive angles are

a. 90° + 360°

= 450°

450° + 360°

= 810°

b. The two negative angles are

= 90° - 360°

= -270°

-270° - 360°

= -630°

3 0
3 years ago
Co...
Julli [10]

Answer:

16

Step-by-step explanation:

Multiplecation by the length width, and the height, then divide and its 16.

8 0
3 years ago
The surface area of a right cone is 400.2 m2. The radius of the cone is 6.0 m. Determine the height of the cone to the nearest m
svetoff [14.1K]
                 S = πr(r + √(h² + r²))
          400.2 = 3.14(6)(6 + √(h² + 6²))
          400.2 = 18.84(6 + √(h² + 36))
          18.84                 18.84
        21¹⁰⁹/₄₇₁ = 6 + √(h² + 36))
        - 6         - 6
        15¹⁰⁹/₄₇₁ = √(h² + 36)
231²²¹⁰⁰⁵/₂₂₁₈₄₁ = h² + 36
- 36                       - 36
195²²¹⁰⁰⁵/₂₂₁₈₄₁ = h²
                14 ≈ h
8 0
3 years ago
I NEED HELP PLEASE ASAP!!! :)
erik [133]

Answer:

  r = 6.4/(1+sin(θ))

Step-by-step explanation:

As the attachment shows, for the given directrix and eccentricity, the equation is ...

  r=\dfrac{ed}{1+e\sin{\theta}}\\\\r=\dfrac{1.6\cdot 4}{1+1.6\sin{\theta}}\\\\\boxed{r=\dfrac{6.4}{1+\sin{\theta}}}\qquad\text{matches the 2$^{\text{nd}}$ choice}

7 0
3 years ago
What is the missing angle?
murzikaleks [220]

a straight line = 180 degrees

 so the missing angle is 180 - 130 = 50 degrees

8 0
3 years ago
Read 2 more answers
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