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Svetach [21]
3 years ago
13

Helpppp please whit both a and b

Mathematics
1 answer:
bazaltina [42]3 years ago
4 0

a. \:  - 13 - 8 \times  {2}^{2}  =  - 13 - 8 \times 4 =  - 13 - 32 =  - 45 \\ b. \:  \frac{6 \times 3}{2}  \div 7 =  \frac{18}{2}  \div 7 = 9 \div 7 \approx 1.28571

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A circle is divided into 8 equal parts. What is the total<br>angle measure of 4 parts?<br>​
snow_lady [41]

Answer:

Step-by-step explanation:

A circle is divided into 8 equal parts means : 360°/8 = 45°

the total  angle measure of 4 parts is :

45°×4=180°

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4 years ago
Help. Pic attached. I do not understand how to get the numbers.
Dima020 [189]

Answer:

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3 years ago
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The first difference of a sequence is 1, 4, 7, 10, 13…
Rama09 [41]

Answer:

1) {4, 5, 9, 16, 26, 39}

2) {3, 4, 8, 15, 25, 38}

3) {3, 4, 8, 15, 25, 38}

Step-by-step explanation:

Hi!

Let's call the sequence {x₁, x₂, x₃, etc}

The information you have is the difference between to consecutive terms:

x_2-x_1= 1\\x_3-x_2= 4\\x_4-x_3= 7\\x_4-x_5= 10\\x_6-x_5= 13

1) Data: x₁=4, then to get x₂ you sum 1, and get x₂=5. Then to get x₃ you sum 4, and get x₃=9, and so on. Result:  {4, 5, 9, 16, 26, 39}

2) Data: x₁ + x₂ = 7. You know that x₂ = x₁ + 1. Then:

x_1+x_2 = x_1 +x_1 +1= 2x_1+1=7\\x_1=3\\x_2= x_1 +1 = 3+1=4

If you continue the same process as in 1), you get {3, 4, 8, 15, 25, 38}

3) Data: x₅ = 25. If you look at the result in 2), you see that x₅ = 25 there!

So the sequence in this case is the same as before {3, 4, 8, 15, 25, 38}

8 0
4 years ago
If correct I’ll give brainlist
Mariulka [41]

Answer:

perpendicular???????????/

Step-by-step explanation:

5 0
3 years ago
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