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ValentinkaMS [17]

2 years ago

10

A television with a 5:3 screen shows an image with a ratio of 5:4 which creates a letter boxed image. What percent of the screen

’s area is occupied by the image?
a)

133%

b)

75%

c)

20%

d)

33%

e)

25%

1 answer:

lions [1.4K]2 years ago

8 0

Answer:

C

Step-by-step explanation:

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Researchers wondered if there was a difference between males and females in regard to some common annoyances. They asked a rando

Zinaida [17]

Answer:

Step-by-step explanation:

Males proportion $p_1 = \frac{163}{532} =0.3064$

Females proportion $p_2 = \frac{203}{589} =0.3447$

$H_0: p_1 = p_2\\H_a: p_1$

(one tailed test for comparison of proportions)

Test statistic = $\frac{p_1-p_2}{p(1-p)\sqrt{\frac{1}{n_1}+\frac{1}{n_2} } }$

=-1.3641

Here p= combined proportion = $\frac{163+203}{532+589} \\=0.3291$

p value = 0.0869

Since p >0.05, accept null hypothesis.

The evidence does not suggest a higher proportion of females are annoyed by this behavior

3 0

2 years ago

In<br> given points.<br> 1. (10,4), (4, 15)<br> Find the slope of the line.

MrMuchimi

Answer:

$m = -\frac{11}{6}$

Step-by-step explanation:

Slope is rise over run.

$\frac{15-4}{4- 10}=\frac{11}{-6} = \boxed{-\frac{11}{6}}$

Hope this helps.

8 0

2 years ago

Guys we have a big test tomorrow, and it is about angles and fractions and I just need someone to refresh my brain. Just answer

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A right angle measures an angle exactly 90 degrees, obtuse= more than 90, acute less than 90 degrees. Triangle angles add up to 180 degrees quadrilaterals measure up to 360 degrees. A fraction can be written as a decimal or percent answer. A fraction is not a whole number. The reciprocal is the opposite of that number/ fraction. Pls give brainliest.

7 0

3 years ago

Evaluate ....................

SCORPION-xisa [38]

Answer:

(-1)*(-1)=1

1*(-1)= -1

first option (-1) is the right answer.

3 0

3 years ago

A cliff forms an angle of x∘ with a lake. If you stand on the edge of the cliff and throw a rock at a distance of 48 ft to the w

klemol [59]

Answer:

∅=6°

Step-by-step explanation:

we have that the distance from the edge of the cliff to the lake is 48 feet, and when the stone is thrown into the lake it collides with the water 5 feet from the base of the cliff so you must find the distance that the stone travels from the edge of the sewer up to 5 feet beyond its base (hypotenuse) and then the angle that forms it (slope)

Hypotenuse (c)

$c^{2}=a^{2}+b^{2}\\c^{2}=48ft^{2}+5ft^{2}\\c^{2}=2304ft^{2} +25ft^{2}=2329ft^{2}\\c=\sqrt{2329ft^{2}}=48.25ft$ :

Slope ∅

Sin∅ = 5ft/48.25ft = 0.1036

∅=arcsin(0.1036) ≅ 5.9°, but how should we round to the nearest integer

, then:

∅=6°

8 0

3 years ago