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3 years ago

Y varies inversely with x. If y = 75 when x =25, find x when y= 25.

Mathematics

1 answer:

ki77a [65]3 years ago

6 0

Answer:

humpty dumpty hmm i got this

Step-by-step explanation:

y+ x+ =58 there

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Ew Mathematics i am just filling up the space

kykrilka [37]

Answer:

For starters for the angles to be complementary they have to be 90 degrees

and angle ECD is a 52 degree angle. Next, you would need to subtract 52 degrees from 90 degrees and get an answer of 38 degrees. Making DCF a 38 degree angle.

Step-by-step explanation:

7 0

3 years ago

You are skiing down a mountain with a vertical height of 800 feet. The distance from the top of the mountain to the base is 1600

adoni [48]

Answer:

θ = $30^{0}$

Step-by-step explanation:

Since the vertical height of the mountain is 800 feet, and the distance from the top to its base is 1600 feet. Let the angle of elevation be represented by θ, applying the required trigonometric function;

Sin θ = $\frac{opposite}{hypotenuse}$

Sin θ = $\frac{800}{1600}$

= 0.5

θ = $Sin^{-1}$ 0.5

θ = $30^{0}$

Thus, the angle of elevation from the base to the top of the mountain is $30^{0}$ .

7 0

3 years ago

42 cats and 14 fish what is the ratio to cats to fish

sladkih [1.3K]

Answer:

42:14

42 cats and 14 fish

8 0

3 years ago

Read 2 more answers

Shawn made a scale drawing of a house and its lot. The scale he used was 13 inches = 5 feet. The backyard is 104 inches in the d

NemiM [27]

13 inches = 5 feet

----------------------------
Find 1 inch:
----------------------------
1 inch = 5/13 feet

----------------------------
Find 104 inches:
----------------------------
104 inches = 5/13 x 104 feet
104 inches = 40 feet

--------------------------------------------------------
Answer: 40 feet
--------------------------------------------------------

6 0

3 years ago

How many 4 digit multiples can not be divided by 5

Advocard [28]

Answer:

1800

Step-by-step explanation:

Let us solve this question by Modular Airthmatic.

Let the lowest 4 digit number be X.

X= 1 (mod 5)

X =2 (mod 5)

X=3 (mod 5)

X =4 (mod 5)

X=1+5 t where t is any integer.

1+5 t=2 (mod 5)

5 t=1 (mod 5 )

5 is the Modular Inverse of modulo 5

t=1 (mod 5)

t =1+5 u : u= any integer.

X becomes 1+ 5 (1+5u )=6+25 u

6+25u =3 (mod 5)

25 u= -3 (mod 5)=2 (mod 5)

25 is Modular Inverse of Modulo 5

u=2 (mod 5)

u =2+5 v : v= any integer.

X becomes 6 +25 (2+5 v)=56+125 v .

56 +125 v=4 (mod 5)

125 v=-52 (mod 5)=3 (mod 5)

125 is Modular Inverse of modulo 5

v = 3 (mod 5)

v =3 +5 w where w is any integer.

For lowest 4 digit number, take

w=200

X=1003 : Lowest 4 digit number.

Take w=201

X=208 : Next number.

For 4 digit largest number, take

w=1995

X= 9978 : Largest number.

No. of Numbers =(1995 - 200 )+1=1800 □Ans.

8 0

3 years ago

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