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Katyanochek1 [597]
3 years ago
9

In circle O below, AB is a diameter and m

Mathematics
1 answer:
Neko [114]3 years ago
4 0

Answer:

i don't know

Step-by-step explanation:

i seriously don't know

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Half of the children in a library group like pets, one fourth don't like pets and seven children do not have any
erik [133]

Answer:

14 children

Step-by-step explanation:

Half the children like pets and a quarter of the children do not, so another quarter does not have preference. Let x = total number of children, and we would have this equation.

0.25x = 7

x = 28


Since we are asked to give the number of children who like pets, 28/2 = 14 is the answer.

3 0
2 years ago
Solve the system by substitution.
Mumz [18]

Answer:

  • no solution

Step-by-step explanation:

We can use the second expression to substitute for y in the first expression. Then we have ...

... 1/2x +11 = -7x^2 -9x +6

Subtracting the right side, we get

... 7x^2 +(9 1/2)x +5 = 0

Eliminating fractions by multiplying by 2, this is ...

... 14x^2 +19x +10 = 0

The discriminant of this equation will tell the number and kind of roots. For a=14, b=19, c=10, the discriminant is ...

... b^ -4ac = 19^2 -4·14·10 = 361 - 560 = -199

Since this value is negative, we know the two roots to the quadratic will be complex. There are no real solutions.

_____

The graph shows the two curves do not intersect, hence there are no values of x that will make the y-values match.

5 0
4 years ago
Read 2 more answers
Find the lowest common multiple of 3, 6 and 8
vlada-n [284]
It has to be 24.

Because 8 is not divisible by 3 or 6 it must be a multiply of two of the numbers. 3*6=18 but 8 is not divisible by that. 3*8 = 24. 24 is divisible by 3 (8), 6 (4), and 8 (3). So 24 is the answer. 

If this answer is correct please leave a thanks and a rating. :)
7 0
4 years ago
Read 2 more answers
PLEASE HELP :) 20 POINTS FOR IT IF U JUST ANSWER LIKE IDK OR SUM IMMA REPORT
nalin [4]

Answer:

BC = 1.8

Step-by-step explanation:

∆ABC is an equilateral ∆ because all three angles are equal. Therefore, all its sides would be equal also. This means AB = BC = AC

Thus, let's find the value of x.

\frac{7}{4}x - 1 = \frac{9}{3}x - 3

Collect like terms

\frac{7}{4}x - \frac{9}{3}x = 1 - 3

\frac{7x}{4} - 3x = -2

\frac{7x - 12x}{4} = -2

\frac{-5x}{4} = -2

Multiply both sides by 4

\frac{-5x}{4}*4 = -2*4

-5x = -8

Divide both sides by -5

x = \frac{8}{5}

AB = BC = AC

Therefore,

BC = \frac{7}{4}x - 1

Plug in the value of x

BC = \frac{7}{4}*\frac{8}{5} - 1

BC = \frac{56}{20} - 1

BC = 2.8 - 1

BC = 1.8

7 0
3 years ago
when is better to use the unit circle vs. right triangles vs. trigonometric identities? Give an example of each and explain why.
Cerrena [4.2K]

Answer:

In an introductory trignometry course, there are many options for introducing trigonometric functions: • As ratios of sides of right triangles ...

Top

7 0
3 years ago
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