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solniwko [45]
2 years ago
14

Last one!!!hdbsjsbsjdsnsjsn​

Mathematics
2 answers:
worty [1.4K]2 years ago
4 0

Answer:

9.4

3rd option

The boats are 9.4 units apart.

BaLLatris [955]2 years ago
3 0

Answer:

Option c is correct

Step-by-step explanation:

<em><u>Hope</u></em><em><u> </u></em><em><u>it</u></em><em><u> </u></em><em><u>helps</u></em><em><u>✌</u></em>

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The product of 14 and the sum of 30 and an unknown number is equal to-196
Leto [7]
14 + 30 + 152 =196 14+30=44 44-196=152
4 0
3 years ago
The ratio of children to adults at a play is 2:3. The ratio of children under 10 to those over 10 is 7: 3. What % are younger ch
fenix001 [56]

Answer:

28%

Step-by-step explanation:

Let number of children be 2x, then number of adults be 3x

Total number is 5x

Let number of children under 10 be 7y, number of children be 3y,

then total number of children is 10y

so 2x = 10y, x = 5y, y/x = 1/5

younger children = children under 10, number is 7y

so the % is 7y/5x = 7/5 * y/x = 7/5 * 1/5 = 7/25 = 28/100 = 28%

7 0
2 years ago
Find the value of x and y
kifflom [539]
The answer is option B.

If you substitute the numbers you get 40° and 110° as it's supposed to be.

~~

I hope that helps you out!!

Any more questions, please feel free to ask me and I will gladly help you out!!

~Zoey

6 0
3 years ago
A circle has centre (3,0) and radius 5. The line y = 2x + k intersects the circle in two points. Find the set
lara [203]

A circle with center (3,0) and radius 5 has equation

(x-3)^2+y^2=25 \iff x^2 + y^2- 6 x  = 16

If we substitute y=2x+k in this equation, we have

x^2+(2x+k)^2-6x=16 \iff 5x^2+(4k-6)x+k^2-16=0

This equation has two solutions (i.e. the line intersects the circle in two points) if and only if the determinant is greater than zero:

\Delta=b^2-4ac=(4k-6)^2-4\cdot 5\cdot (k^2-16)>0

The expression simplifies to

-4 (k^2 + 12 k - 89)>0 \iff k^2 + 12 k - 89

The solutions to the associated equation are

k^2 + 12 k - 89=0 \iff k=-6\pm 5\sqrt{5}

So, the parabola is negative between the two solutions:

-6-5\sqrt{5}

8 0
3 years ago
Hakim recorded his finishing time, in seconds, for each time he ran the 100 m race during one track season.
Alchen [17]
Its 12.1. it is the middle number from largest to least value.
7 0
3 years ago
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