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Agata [3.3K]
3 years ago
9

In a recent study, 50 males used a new weight-loss supplement, and 38 of them experienced weight loss after two weeks. In the sa

me study, 100 females used the same supplement, and 85 of them experienced weight loss after two weeks. Fill in the blanks of the statement below to make the statement the most reasonable possible. The new weight-loss supplement was more effective on ? in the study because only % of them failed to lose weight after two weeks, % of the ? whereas failed to lose weight after two weeks. ?
Mathematics
2 answers:
Aliun [14]3 years ago
7 0

Answer:

The new weight-loss supplement was more effective on females in the study because only 85% of them failed to lose weight after two weeks, 15% of the females whereas failed to lose weight after two weeks.

Step-by-step explanation:

Male proportion that lose weight

p_m=38/50=0.76

Female proportion that lose weight

p_f=85/100=0.85

Proportion of females that failed to lose weight

p_{f2}=1-0.85=0.15

Montano1993 [528]3 years ago
3 0

Answer:

Step-by-step explanation:

Males proportion who did not lose weight = 12/50 = 24%

Females proportion who did not lose weight = 15/100 = 15%

Thus we find this was effective for females compared to males.

he new weight-loss supplement was more effective on females in the study because only 15% of them failed to lose weight after two weeks, whereas 24% of the males failed to lose weight after two weeks.

So answer is Females, 15 and 24.

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8 0
3 years ago
Julia is allowed to watch no more than 5 hours of television a week. So far this week, she has watched 1.5 hours. Write and solv
mojhsa [17]

Answer:

The inequality to show how many hours of television Julia can still watch this week can be given as:

⇒ x+1.5\leq 5

where x represents he number of hours of television that Julia can still watch this week

On solving for x, we get

x\leq3.5

Thus, Julia can still watch no more than 3.5 hours of television this week.

Step-by-step explanation:

Given:

Julia is allowed to watch television no more than 5 hours a week.

She has already watched 1.5 hours

To write and solve an inequality to show how many hours of television Julia can still watch this week.

Solution:

Let the number of hours of television that Julia can still watch this week be = x

Number of hours already watched = 1.5

Total number of hours of watching television this week would be given as:

⇒ x+1.5

It is given that Julia is allowed to watch no more than 5 hours of television in a week.

Thus, the inequality can be given as:

⇒ x+1.5\leq 5

Solving for x

Subtracting both sides by 1.5

x+1.5-1.5\leq 5-1.5

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Thus, Julia can still watch no more than 3.5 hours of television this week.

6 0
3 years ago
I really need help quick
Natali [406]

Answer:

\sf x=2+\sqrt{6},\:x=2-\sqrt{6}

Explanation:

\sf y = x^2 -4x

given that y = 2

\sf x^2 -4x = 2

\sf x^2 -4x -2 = 0

using quadratic formula:

\sf x = \dfrac{ -b \pm \sqrt{b^2 - 4ac}}{2a}  \    \ \ when  \   ax^2 + bx + c = 0

\rightarrow \sf x_{1,\:2}=\dfrac{-\left(-4\right)\pm \sqrt{\left(-4\right)^2-4\cdot \:1\cdot \left(-2\right)}}{2\cdot \:1}

\rightarrow \sf x_1=\dfrac{-\left(-4\right)+2\sqrt{6}}{2\cdot \:1},\:x_2=\dfrac{-\left(-4\right)-2\sqrt{6}}{2\cdot \:1}

\rightarrow \sf x=2+\sqrt{6},\:x=2-\sqrt{6}

in decimals:

\rightarrow \sf x=4.45 , \ -0.45

5 0
2 years ago
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