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jenyasd209 [6]
3 years ago
6

5. A construction area has 6 cylindrical posts protecting the

Mathematics
1 answer:
Juli2301 [7.4K]3 years ago
5 0

Answer: what’s the answer ?

Step-by-step explanation:

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How many real roots does the function
icang [17]

Answer:

Option C is correct i.e. 2.

Step-by-step explanation:

Given the function is f(x) = x² +8x -2.

We can compare it with general quadratic expression i.e. ax² +bx +c.

Then a = 1, b = 8, c = -2.

We can find the number of real root by finding discriminant of the equation ax² +bx +c =0 as follows:-

D = b² -4ac

D = 8² -4*1*-2

D = 64 +8

D = 72.

When D is a positive value, then we have two real roots of the equation.

Hence, option C is correct i.e. 2.

6 0
3 years ago
Simplifying expressions:<br> Simplify 22-5(2x+4)
tangare [24]

22-10x-20

=2-10x

=2(1-5x)

hope this helps.

7 0
3 years ago
Read 2 more answers
The diameter of a circle is 17 cm. Find the circumference \textit{to the nearest tenth}to the nearest tenth.
aev [14]

Answer:

52.4 cm

Step-by-step explanation:

Circumference of a circle = 2πr

Radius, r = diameter / 2

= 17 cm / 2

= 8.5 cm

π = 3.14

Circumference of a circle = 2πr

= 2 × 3.14 × 8.5

= 53.38 cm

Approximately 52.4 cm

5 0
2 years ago
Rhianna has a spinner, which is divided into four equal parts. The parts are numbered 1, 2, 3, and 4. If Rhianna spins the spinn
Makovka662 [10]

Answer:

The bottom table.

Step-by-step explanation:

It's the only one that shows options for heads and tails for every number.

4 0
3 years ago
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Carmen has a rope 54 feet long. She wants to cut it into 6-foot lengths to make jump ropes for the members of the jump roping te
Ilia_Sergeevich [38]
54 divided by 6 is 9. she can 9 times
7 0
3 years ago
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