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umka2103 [35]
3 years ago
11

I need some help with these questions

Mathematics
1 answer:
Ymorist [56]3 years ago
7 0
The Answer is 8. B 18 is D
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The height of the sail on a boat is 7 feet less than 3 times the length of its base. If the The area of the sail is 68 square fe
Dima020 [189]

Step-by-step explanation:

It is given that,

The height of the sail on a boat is 7 feet less than 3 times the length of its base.

Let the length of the base is x.

ATQ,

Height = (3x-7)

Area of the sail is 68 square feet.

Formula for area is given by :

A=lb\\\\68=x(3x-7)\\\\3x^2-7x=68\\\\3x^2-7x-68=0

x = 8 feet and x = -3.73 feet

So, length is 8 feet

Height is 3(8)-7 = 17 feet.

So, its height and the length of the base is 17 feet and 8 feet respectively.

3 0
2 years ago
Round 5,896,487 to the<br> nearest ten-thousand.
Bas_tet [7]

Answer:12

Step-by-step explanation:

u half to round it to the nerest hundreths and than multiplye it by 4

7 0
3 years ago
Read 2 more answers
Perform the indicated operation.<br>(3x - 4)2
pashok25 [27]

Answer:

6x-8

Step-by-step explanation:

you multiply 2*3x=6x then 4*2=8

therefore 6x-8=(3x-4)2

8 0
3 years ago
Read 2 more answers
I) Consider the following figure,<br><br> ​<br><br> ​<br><br> ​
qwelly [4]

Step-by-step explanation:

If PQRS is a quadrilateral inscribed in a circle, then the opposite angles of the quadrilateral are <u>supplementary</u><u>.</u>

y + 68° = 180° { being opposite angles of cyclic quadrilateral }

y = 180° - 68°

y = 112°

x + 82° = 180° { being opposite angles of cyclic quadrilateral }

x = 180° - 82°

x = 98°

Hope it will help :)❤

4 0
2 years ago
Ok help me please guys ..what is 61=3b+7 ?
Neporo4naja [7]
61 = 3b + 7

3b + 7 = 61

3b = 61 - 7

3b = 54

b = 54/3

b = 18.
7 0
3 years ago
Read 2 more answers
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