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Pavlova-9 [17]
2 years ago
5

Solve for b 15=3b Please I need help

Mathematics
1 answer:
IgorLugansk [536]2 years ago
6 0
15=3b
15/3 = 3b/b
5= b

Isolate the variable by diving 3 on both sides
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476 Marks<br> boole<br> Calculate the area of this triangle.<br> 17 cm<br> 8 cm<br> 15 cm
Naddika [18.5K]

Answer:

Step-by-step explanation:

sides =8 cm, 17 cm and 15 cm

Area of triangle by Hero's Formula,

S=a+b+c/2

S=17+8+15/2

S=40/2

S=20

A=\sqrt{s(s-a)(s-b)(s-c)}

A=\sqrt{20(20-17)(20-8)(20-15)}

A=\sqrt{(20)(3)(12)(5)}

A=\sqrt{3600}

A=60 cm^{2}

4 0
2 years ago
If anyone could please help me with both these questions if not then at least do one I would appreciate it a lot! Please and Tha
Andreas93 [3]
Unit is 72 because it is the length
6 0
2 years ago
What's 80÷7 I need this answer fast thank you it's for 65 points
klemol [59]
In order to solve this, we must find out how many times 7 goes into 80. We can do this by either subtracting individual 7s from 80, or by adding 7s together until we cannot add another without going past 80.

For this answer, I will use the addition method.

7 + 7 = 14

14 + 7 = 21

21 + 7 = 28

28 + 7 = 35

35 + 7 = 42

42 + 7 = 49

49 + 7 = 56

56 + 7 = 63

63 + 7 = 70

70 + 7 = 77

From 77, we cannot add another 7 to it without going over 80, since 77 + 7 = 84.

So, let's count the sevens that we have added up so far, and when we do, we can see that there are 11 of them, adding up to 77.
So 7 goes into 80 11 times. Now, let's find the remainder...

To find the remainder, you just need to subtract the final added number from the number you are dividing from.

80 - 77 = 3

80 / 7 = 11, remainder 3
Hope that helped! =)
6 0
3 years ago
Read 2 more answers
What is the first step in solving this system of equations by Substitution?
pickupchik [31]

Answer:

x=x+2

Step-by-step explanation:

6 0
2 years ago
Please i need help please i need it quickly
NeX [460]
Whats the question? i finished trigonometry my sophomore year so i’d say im decent at math i guess
4 0
2 years ago
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