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4 years ago

Please help I will reward brainly

Mathematics

2 answers:

valentina_108 [34]4 years ago

8 0

I believe the answer is 9.8

liberstina [14]4 years ago

6 0

Hey there :)

Both the shapes are similar
We can notice that through the angles given

Therefore, we can use ratios to find the segment ZY

WX : EH = 7 : 5
ZY : FG = ? : 7

$\frac{7}{5} = \frac{ZY}{7}$

We can cross multiply
7 ( 7 ) = 5 ( ZY )
49 = 5( ZY )

Divide by 5 in order to find the answer
$\frac{49}{5} = \frac{5(ZY)}{5}$

Segment ZY = 9.8

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(S.D.5) What percentage of women preferred movies? O 12% O 27% O 24% 0 42%

Vaselesa [24]

Answer:

the correct answer is 27%

7 0

3 years ago

Read 2 more answers

Crude oil imports to one country from another for 2009–2013 could be approximated by the following model where t is time in year

DIA [1.3K]

Answer:

Import in 2012 was the greatest

Step-by-step explanation:

Given

l(t) = -33t² + 800t - 3000

9 ≤ t ≤ 13

Required

Determine the year with highest import.

To do this we simply substitute the values of t from 9 to 13 in the given function.

When t = 9

l(t) = -33t² + 800t - 3000

l(9) = -33 * 9² + 800 * 9 - 3000

l(9) = -33 * 81 + 800 * 9 - 3000

l(9) = -2673 + 7200 -3000

l(9) = 1527

When t = 10

l(10) = -33 * 10² + 800 * 10 - 3000

l(10) = -33 * 100 + 800 * 10 - 3000

l(10) = -3300 + 8000 - 3000

l(10) = 1700

When t = 11

l(11) = -33 * 11² + 800 * 11 - 3000

l(11) = -33 * 121 + 800 * 11 - 3000

l(11) = -3993 + 8800 - 3000

l(11) = 1807

When t = 12

l(12) = -33 * 12² + 800 * 12 - 3000

l(12) = -33 * 144 + 800 * 12 - 3000

l(12) = -4752 + 9600 - 3000

l(12) = 1848

When t = 13

l(13) = -33 * 13² + 800 * 13 - 3000

l(13) = -33 * 169 + 800 * 13 - 3000

l(13) = -5577 + 10400 - 3000

l(13) = 1823

Comparing the values of l(t) for the range of t = 9 to 13,

The highest value of l(t) is:

l(12) = 1848

Hence, the year with the highest import is 2012

6 0

4 years ago

The Better Nutter Butter Co packed 400 lb. of peanut butter into jars holding 2.5 lbs. each. How many jars were used?

Rus_ich [418]

Answer:

160 jars

Step-by-step explanation:

To find how many jars were used, we just need to divide the amount of stuff by the amount of stuff a jar can hold.

400 (the amount of peanut number in pounds) / 2.5 (the amount of peanut butter each jar can hold) = 160.

So, 160 jars were used to package the 400 pounds of peanut butter.

8 0

3 years ago

Talia uses 10 strawberries and 4 oranges to make 8 servings of fruit salad. How many oranges and strawberries does Taila needs t

yarga [219]

Since 12 is 8 x 1 1/2 she needs 1 1/2 time as much fruit.

1 1/2 x 10 = 15 strawberries and 1 1/2 x 4 = 6 oranges.

You could also solve this using proportions:

$\frac{10}{8} = \frac{n}{12}$

Cross multiply and get 8n= 120 divide by 8 and get 15 strawberries

Do the same for the oranges:

$\frac{4}{8} = \frac{n}{12}$

You can see that 4/8 = 1/2 so n/12 has to be 6 to be 1/2 (or solve it using cross products like I did above).

4 0

4 years ago

Initially 100 milligrams of a radioactive substance was present. After 8 hours the mass had decreased by 2%. If the rate of deca

4vir4ik [10]

Answer:

The half life of the radioactive substance is 277 hours.

Step-by-step explanation:

initial mass, No = 100 mg

mass decayed = 2% = 2 mg

Mass remained , N = 98 mg

time, t = 8 hours

Let the half life is T.

Use the equation of radioactivity

$N = No\times e^{\frac{-0.693 t}{T}}\\\\98 = 100 \times e^{\frac{-0.693\times 8}{T}}\\\\0.98 = e^{\frac{-5.54}{T}}\\\\ln 0.98 = -\frac{5.54}{T}\\\\-0.02= -\frac{5.54}{T}\\\\T = 277 hours$

5 0

3 years ago