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2 years ago

5. A study of a population of 1,200 frogs revealed that 12 out of every 180 frogs in the population

Mathematics

1 answer:

Delvig [45]2 years ago

8 0

Answer:

1,280

Step-by-step explanation:

prob(spots) = 12/180 = 1/15

so of the 1200 frogs, (1/15)(1200) should have spots, so ..

how many should not have frogs ?

prob(not spots) = 14/15

number who don't have spots = (14/15)(1200) = 1,280

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PLEASE HELP 20 POINTS

Tanzania [10]

The sinusoid makes a complete oscillation (i.e. 360°) every 3 seconds. So, in one second it makes 1/3 of a turn, leading to 360°/3 = 120°.

So, the correct answer is the last one.

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2 years ago

A man wants to test for diabetes. His family history shows that the probability of getting diabetes is 0.6. He decides to do a h

lesantik [10]

So,

The probability of the man having diabetes is 0.6 or 60%. Because we are figuring the probability BEFORE the test is taken that he has the disease, we can disregard the test and its accuracy rate. That rate is 60%, the probability of him having diabetes.

The correct option is D.

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2 years ago

If two ounces of cheese has 200 calories, how many calories are in 5 ounces of cheese? please help!!

Vaselesa [24]

Answer:

500 calories

Step-by-step explanation:

2oz has 200cal

so 1z has 100cal

and 5x 100=500

5oz=500cal

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2 years ago

Read 2 more answers

If the angles are represented in degrees, find both angles: sin(x+7)=cos(4x+8)

garri49 [273]

Answer:

$m\angle 1 = 22\degree$

$m\angle 2 = 68\degree$

Step-by-step explanation:

$\sin(x + 7) = \cos(4x + 8) \\ \sin(x + 7) = \sin \{90 - (4x + 8) \} \\ \{ \because \cos \theta = \sin(90 \degree - \theta) \}\\ \therefore \: (x + 7) = 90 - (4x + 8) \\ x + 7 + 4x + 8 = 90 \\ 5x = 90 - 15 \\ 5x = 75 \\ x = \frac{75}{5} \\ x = 15$

(x + 7)° = (15 + 7)° = 22°

(4x + 8)° = (4*15 + 8)° = (60 + 8)° = 68°

$m\angle 1 = 22\degree$

$m\angle 2 = 68\degree$

7 0

2 years ago

Yvette uses 6 games of tea leaves to make 24

ruslelena [56]

Answer:

Therefore last week Yvette used 72 grams of tea leaves to make 288 ounces of tea.

Step-by-step explanation:

i) 6 grams of tea leaves are used to make 24 ounces of tea.

ii) 1 gram of tea leaves can be used to make $= \frac{24}{6} = 4\hspace{0.1cm}ounces\hspace{0.1cm}of\hspace{0.1cm}tea$

iii) number of grams of tea leaves to make 288 ounces of tea

$= \frac{288}{4} = 72\hspace{0.1cm}grams\hspace{0.1cm}of\hspace{0.1cm}tea\hspace{0.1cm}leaves$

The answer is 72 grams of tea leaves are required to make 288 ounces of tea.

Therefore last week Yvette used 72 grams of tea leaves to make 288 ounces of tea.

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2 years ago