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marta [7]
2 years ago
8

Diogo and his 4 friends want to share the cost of a meal equally. They order

Mathematics
1 answer:
Step2247 [10]2 years ago
3 0

Answer:

45 rand

Step-by-step explanation:

3 large pizzas is 10 ×3=R30

5 small drinks is 1.50×5=R7.50

tip of R7.50

add all

30+7.50+7.50

=45

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In which graph is y a direct variation of x?<br> A.<br> B.<br> C.<br> D.
TEA [102]

Answer:

D

Step-by-step explanation:

The line is going through the origin.

8 0
3 years ago
Explain how to find the exact value of sin(570°).
Lena [83]
Quick answer Sin(570) = - 1/2
Comment

570 as an angle contains 1 complete revolution of the terminal arm. The terminal arm begins at the origin and the other (in this case swings around until it records 570° turning around the x axis in an anticlockwise direction.

Anticlockwise means going from 12 o'clock to 9 o'clock to 6 o'clock then 3 o'clock and back to 12 o'clock.

What is 570° (∅) degrees equivalent to?
We keep on subtracting 360 until we get a number between 0 and 360 inclusive.

Written this way 0 ≤∅≤360
570 - 360 = 210°

So we need to find the equivalent of 210° 

Method
210° = 180° + 30°
This means that ∅ is 30° below the x axis in the 3rd quadrant.

Sin(30) = 1/2 
In the third quadrant, the sine is minus. so 
sin(210°) = - 1/2 <<<<<<< Answer 
7 0
3 years ago
Read 2 more answers
I know this is easy but what is 799 divided by 7
Mademuasel [1]

114.14

hope this helps.

3 0
3 years ago
Read 2 more answers
1 The metal used to make a coin is a mixture of steel and copper. The ratio mass of steel
Masteriza [31]

\huge{ \underline{ \underline{ \gray{ \bf{Solution:}}}}}

Let,

  • Mass of the steel be 108x
  • Mass of the copper be 7x
  • Then, Total mass = 108x + 7x = 115x

Given,

  • Total mass of the coin = 230 mg

That means,

⇛ Total mass of the coin = 230 mg

⇛ 115x = 230 mg

⇛ x = 230 mg/115

⇛ x = 2 mg

Then,

  • Mass of the steel = 108(2) = 216 mg
  • Mass of the copper = 7(2) = 14 mg

☁️ ANSWER - 14 mg (Mass of copper)

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7 0
3 years ago
Simplify the expression to a + bi form:<br> (9+7i)(6 + i)
Scorpion4ik [409]

(9 + 7i)(6 + i) \\  = 54 + 9i + 42i + 7 {i}^{2}  \\  = 54 + 51i  - 7 \\  = 47 + 51i

I hope I helped you^_^

6 0
3 years ago
Read 2 more answers
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