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Sonja [21]
3 years ago
5

Help!!Will give brainliest!Plz explain how to do this if possible.

Mathematics
2 answers:
Law Incorporation [45]3 years ago
8 0

Answer:

a = 15/4

Step-by-step explanation:

First we need to solve for x

sin 30 = opposite/ hypotenuse

sin 30 = x/15

15 sin 30 = x

15 (1/2) =x

15/2 =x

Then we can use

cos 60 = adjacent/ hypotenuse

cos 60 = a/x

Multiply by x

x cos 60 =a

15/2 (1/2) =a

15/4

Dima020 [189]3 years ago
4 0

Answer: a=3.74

Step-by-step explanation:

first use 15 to solve for  x and z. x=7.5 and z=12.99 or 13. Once you know x you can use that to solve for y and a. y=6.5 and x=7.5 and using pythagorean theorem you will find that a= the square root of 14 or 3.74.

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Mixed nuts sell for $7.89 a pound. Leticia fills a bag and weighs it. The bag weighs 2.3 pounds.
Maurinko [17]

Answer:

i think the answer is 18.15

Step-by-step explanation:

8 0
3 years ago
Quadrilateral EFGH was dilated by a scale factor of 2 from the center (1, 0) to create E'F'G'H'. Which characteristic of dilatio
Juliette [100K]

The answer choice which is the characteristic of dilations comparing both segments is; A segment in the image is proportionally longer or shorter than its corresponding segment in the pre-image

<h3>Which answer choice compares segment E'F' to segment EF?</h3>

By consider the coordinates of the quadrilaterals EFGH and E'F'G'H' as given in the task content image, it follows that the coordinates are as follows;

  • E(0, 1), F(1, 1), G(2, 0), and H(0, 0)

  • E'(-1, 2), F'(1, 2), G'(3, 0), and H'(-1, 0)

Upon computation of the length of the segments, it follows that the two segments are in proportions. Hence, the answer choice which is correct is; A segment in the image is proportionally longer or shorter than its corresponding segment in the pre-image.

Remark:

  • A segment that passes through the center of dilation in the pre-image continues to pass through the center of dilation in the image.
  • A segment in the image has the same length as its corresponding segment in the pre-image.
  • A segment that passes through the center of dilation in the pre-image does not pass through the center of dilation in the image.
  • A segment in the image is proportionally longer or shorter than its corresponding segment in the pre-image.

Read more on length of segments;

brainly.com/question/24778489

#SPJ1

3 0
2 years ago
Lauren and her friend went out to eat at Cheddar's . The food total was $61.32. They then left a 7% tip. What was the price of t
kati45 [8]

Answer:

$4.29

Step-by-step explanation:

7% of $61.32 comes out to 4.2924, for the monetary conversion, just round it to the hundredths place and it comes out to $4.29

7 0
3 years ago
The price of a ring was increased by 9% to £1800. What was the price before the increase? Give your answer to the nearest penny.
Alla [95]

Answer:

see steps

Step-by-step explanation:

New price  was increase from 100% to 109% at £1800.

By proportionality,

old price / 100% = 1800 / 109%

Cross multiply to get

old price = $1800 * 100% / 109% = £1651.38

6 0
3 years ago
Read 2 more answers
A sample of computer tablet batteries has a mean battery life of 28 months and standard deviation of 4 months. What is the lifes
Ulleksa [173]

Using the Empirical Rule, it is found that the lifespans, in months, are given by:

1. 24 and 32.

2. 20 and 36.

3. 16 and 40.

<h3>What is the Empirical Rule?</h3>

It states that, for a normally distributed random variable:

  • Approximately 68% of the measures are within 1 standard deviation of the mean.
  • Approximately 95% of the measures are within 2 standard deviations of  the mean.
  • Approximately 99.7% of the measures are within 3 standard deviations of the mean.

Hence, considering the mean of 28 months and the standard deviation of 4 months, the life spans are given by:

1. 24 and 32.

2. 20 and 36.

3. 16 and 40.

More can be learned about the Empirical Rule at brainly.com/question/24537145

5 0
2 years ago
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