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scZoUnD [109]
3 years ago
13

Someone help pleaseee

Mathematics
1 answer:
Troyanec [42]3 years ago
5 0
The answer would be 40
Explanation: let’s say x is over y
It took 0.4 times 80 to get 32 which means it would be 0.4 times 100 to get 40
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What is the length of EF in the triangle? Show your work. HELP!
Zinaida [17]

The length of EF in the given triangle is 8.80 m.

Step-by-step explanation:

Step 1:

In the given triangle, the opposite side's length is 16.2 m, the adjacent side's length is x m while the triangle's hypotenuse measures 16.2 m units.

The angle given is 90°, this makes the triangle a right-angled triangle.

So first we calculate the angle of E and use that to find x.

Step 2:

As we have the values of the length of the opposite side and the hypotenuse, we can calculate the sine of the angle to determine the value of the angle of E.

sinE = \frac{oppositeside}{hypotenuse}  =\frac{13.6}{16.2} = 0.8395.

E = sin^{-1} (0.8395), E = 57.087.

So the angle E of the triangle DEF is 57.087°.

Step 3:

As we have the values of the angle and the hypotenuse, we can calculate the cos of the angle to determine x.

cos E = \frac{adjacentside}{hypotenuse} = \frac{x}{16.2} .

cos(57.087) = 0.5433, x = 16.2 (0.5433) = 8.8014.

Rounding this off to the nearest hundredth, we get x = 8.80 m.

8 0
3 years ago
In one​ lottery, a player wins the jackpot by matching all five numbers drawn from white balls​ (1 through 45​) and matching the
777dan777 [17]

Answer:

39,096,288

Step-by-step explanation:

as we know that

The number of ways to pick 5 numbers from 45  are

45C_5

\frac{45\times44\times43\times42\times41}{5\times4\times3\times2\times1}|

= 1,221,759.

There are 32 ways to pick a gold ball so total number of ways to get  6 matching numbers is

1221759×32

= 39,096,288

6 0
3 years ago
Divide £72cm in the ratio 2:3:1 working out please
ale4655 [162]
2:3:1
2+3+1 = 7

£72 / 7 = £10.28

Answer:
£10.28 * 2 = £20.56
£10.28 * 3 = £30.84
£10.28 * 1 = £10.28

If you want to check if it's correct. add all three of them and see if you get the £72.

Please make this answer the brainiest!
4 0
3 years ago
Susan has already knit 36 centimeters of scarf,and can knit 1 centimeter each night. After 10 nights of knitting,how many centim
nasty-shy [4]

Answer:

46 cm

Step-by-step explanation:

If Susan can knit 1 cm per night and knits for 10 nights the is 10cm. Then you add the 10cm to the 36cm to get 46cm.

5 0
2 years ago
Solve for x in this equation.
arsen [322]

Answer:

33

Step-by-step explanation:

1. (x-10)+67=90 because it's a 90 degree angle

2.subtract 67: x-10=23

3. add 10: x=33

7 0
3 years ago
Read 2 more answers
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