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3 years ago

Plz help on these questions u have to simply to find the answer plz i need help

Mathematics

1 answer:

masya89 [10]3 years ago

6 0

Answer:

1,3,6,8,9

Step-by-step explanation:

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What is the value of y 4y-3=5y+2 solv for y

Fudgin [204]

Y is 5 hope this helps

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3 years ago

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Please help... AP is arithmetic progression

7nadin3 [17]

Answer:

The least value of n is 17.

Step-by-step explanation:

First term (a) = 46

Second term (a + d) = 43

Third term (a + 2d) = 40

Common difference (d) = second term - first term = 43 - 46 = -3

Tn (nth term) = a + (n - 1)d

a = 46, d = -3

Tn = 46 + (n - 1)-3 = 46 + (-3n + 3) = 46 - 3n + 3 = 49 - 3n

For Tn to be negative, the product of 3 and n must be greater than 49.

Therefore, the least value of n is 17

5 0

4 years ago

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The digits of a two-digit number differ by 2. If the digits are interchanged and the resulting number is added to the original n

butalik [34]

$x$ - tens digit

$y$ - units digit

$10x+y$ - the original number

$10y+x$ - the number with interchanged digits

$|x-y|=2\\10x+y+10y+x=110\\\\x-y=2 \vee x-y=-2\\11x+11y=110\\\\x=y+2 \vee x=y-2\\x+y=10\\\\y+2+y=10 \vee y-2+y=10\\2y=8 \vee 2x=12\\y=4 \vee y=6\\\\x+4=10 \vee x+6=10\\x=6 \vee x=4$

$10x+y=10\cdot 6+4 \vee 10x+y=10\cdot4+6\\10x+y=64 \vee 10x+y=46$

Therefore, the original number can be either 46 or 64.

5 0

3 years ago

Thanos has his space ship circular orbit around the Earth completes one orbit every 4 hours. The radius of the Earth is about 64

Lubov Fominskaja [6]

The radius of Earth = 6,400 km, and the spaceship is 3,250 km above the Earth.

So radius of Spaceship's orbit = 6,400 km + 3,250 km = 9,650 km.

The distance covered to complete one orbit would be circumference of the circle with radius 9,650 km.

So, circumference of circle = 2π·r = 2π·(9,650) = 19,300π km

It says it completes one orbit in 4 hours, then its speed = $\frac{19,300\pi }{4} \;kmph =4,825\pi \;kmph \approx 15,158.18 \;kmph$

So, it travels approximately 15,158.18 kilometers in one hour.

7 0

3 years ago

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Nat2105 [25]

Answer:

30 centimeters.

Step-by-step explanation:

The scale between the rectangles is 1 to 3, so the larger one is three times bigger than the smaller one, that is, all the sides of the rectangle are three times bigger.

So, We know that the formula to calculate the perimeter of a rectangle is:

P = 2L + 2W

Where P is the perimeter, L is the lenght and W is the width.

If the lenght and the width of the bigger rectangle are three times bigger, we have that its perimeter, related to the perimeter of the smaller rectangle, will be:

(bigger rectangle: P1, L1 and W1; smaller rectangle: P2, L2 and W2)

P1 = 2*L1 + 2*W1 = 2*3*L2 + 2*3*W2 = 3*(2*L2 + 2*W2) = 3*P2

If P1 = 90 centimeters, we have that:

90 = 3*P2 -> P2 = 30 centimeters.

The perimeter of the smaller rectangle is 30 centimeters.

7 0

3 years ago