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Alexxandr [17]
3 years ago
15

What is 2 3/4 • 6 2/3

Mathematics
1 answer:
STatiana [176]3 years ago
6 0
The answer is 18 1/3

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In ΔWXY, the measure of ∠Y=90°, XW = 53, YX = 28, and WY = 45. What is the value of the cosine of ∠X to the nearest hundredth?
kotegsom [21]

The value of ∠X = 58.11°, If ΔWXY, the measure of ∠Y=90°, XW = 53, YX = 28, and WY = 45.

Step-by-step explanation:

The given is,

                   In ΔWXY, ∠Y=90°

                        XW = 53

                         YX = 28

                        WY = 45

Step:1

             Ref the attachment,

             Given triangle XWY is right angled triangle.

             Trigonometric ratio's,

                              Cos ∅  = \frac{Adj}{Hyp}    

             For the given attachment, the trigonometric ratio becomes,

                              Cos ∅  = \frac{XY}{XW}.....................................(1)

             Let, ∠X = ∅

             Where, XY = 28

                         XW =  53

             Equation (1) becomes,

                                 Cos ∅  = \frac{28}{53}

                                 Cos ∅ = 0.5283

                                        ∅ = cos^{-1} (0.5283)

                                        ∅ = 58.109°

Result:

          The value of ∠X = 58.11°, If ΔWXY, the measure of ∠Y=90°, XW = 53, YX = 28, and WY = 45.

             

4 0
3 years ago
90 points for question
Lesechka [4]

Answer:

x=10

Step-by-step explanation:

so your given an angle, 110, and another with an equation, 8x+30, which happens to be vertical to 110 degree angle meaning they are equal, so they both are equal to 110 now how do you solve for x? you simply reverse the equation that x is in, so you subtract 110-30=80, then divide by 8 giving you 10, so x=10.

3 0
2 years ago
Read 2 more answers
A set of four postcards costs $1.00. Single postcards cost $0.50. What is the least amount of money you
shepuryov [24]

Answer: 3 Sets of the 4 post cards and 3 of the single post cart sets.

Step-by-step explanation:

You buy 3 of the 4 post card set becuase that is the most you can get of those to get under 15 post cards.

You would now have 12 postcards now you have to buy 3 of the single set to get to 15 cards

3 0
3 years ago
Read 2 more answers
PLEASE HELP! REWARDING A LOT :)
vaieri [72.5K]

Answer:

(x - 6)(x - 11)

Step-by-step explanation:

x² - 17x + 66

-11 and -6

x² -11x - 6x + 66

x(x -11) - 6(x -11)

(x - 6) (x - 11)

(x = 6 or x = 11) These are the possibilities of x

4 0
3 years ago
Read 2 more answers
Five times the sum of a number and three is the same as three times the difference of twice the number and one what is the numbe
cupoosta [38]

Answer:

the number is 105

Step-by-step explanation:

5(x+3) = 3(2x - 1)

5x + 15 = 6x - 3

15 = 1x - 3  

(15 + 3)

x = 18

3 0
2 years ago
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