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3 years ago

I’m having some trouble with this can someone pls help?

Mathematics

1 answer:

OlgaM077 [116]3 years ago

8 0

Answer:

80% of 16 is 12.8

Step-by-step explanation

80% = 0.8

16*0.8=12.8

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3 (x+2)+9<6(x-3) solve the inequality and write the solution using interval notation

Darya [45]

Answer:

(11, ∞).

Step-by-step explanation:

3 (x+2)+9<6(x-3)

3x + 6 + 9 < 6x - 18

-3x < -18 - 6 - 9

-3x < -33

x > 11 (Note the inequality flips as we are dividing by a negative value).

6 0

2 years ago

State who is correct and explain why

Ivan

Answer:

12.4+3√7 is irrational

Step-by-step explanation:

12.4 is a rational number

3√7 is an irrational number

The sum of a rational number and an irrational number is irrational.

So, 12.4+3√7 is irrational

4 0

3 years ago

Suppose that you drop a ball from a window 50 metres above the ground. The ball bounces to 50% of its previous height with each

stich3 [128]

We have been given that you drop a ball from a window 50 metres above the ground. The ball bounces to 50% of its previous height with each bounce. We are asked to find the total distance traveled by up and down from the time it was dropped from the window until the 25th bounce.

We will use sum of geometric sequence formula to solve our given problem.

$S_n=\frac{a\cdot(1-r^n)}{1-r}$ , where,

a = First term of sequence,

r = Common ratio,

n = Number of terms.

For our given problem $a=50$ , $r=50\%=\frac{50}{100}=0.5$ and $n=25$ .

$S_{25}=\frac{50\cdot(1-(0.5)^{25})}{1-0.5}$

$S_{25}=\frac{50\cdot(1-0.0000000298023224)}{0.5}$

$S_{25}=\frac{50\cdot(0.9999999701976776)}{0.5}$

$S_{25}=100\cdot(0.9999999701976776)$

$S_{25}=99.99999701976776\approx 100$

Therefore, the ball will travel 100 meters and option B is the correct choice.

4 0

3 years ago

Pls help I need help plsss

Mkey [24]

Answer:

C, D, E

Step-by-step explanation:

≥ means that x is either more than or equal to 15. The numbers that fit this are 15, 24, and 32.

Please give brainliest if I helped! :)

4 0

2 years ago

Luc randomly selected 40 students and asked them whether they had ever gone snowboarding. He repeated this survey using the same

anygoal [31]

C. No, because although the results differ among the four surveys, the sample method used for all was the same. Luc RANDOMLY selects 40 students in every survey. Random selection in surveys do not create bias and the results are highly credible. This is because there are no preconceived notions or factors that affect the responses of people being surveyed.

7 0

2 years ago