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tekilochka [14]
3 years ago
7

А.

Mathematics
2 answers:
harkovskaia [24]3 years ago
7 0
What she or he said
lisov135 [29]3 years ago
5 0

Answer:

Step-by-step explanation:

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In a two-digit number the units digit is three less than the tens digit. If the digits are reversed, the sum of the reversed num
makvit [3.9K]

Answer:

74.

Step-by-step explanation:

Let the number be xy.

Then from the given data

x = y + 3..........(1)

The numerical value of xy is 10x + y so the second equation is

10x + y + 10y + x = 121

11x + 11y = 121    Simplifying:

x + y = 11

x = -y + 11 .........(2)    Adding equations (1) and (2):

2x = 14

x = 7

and therefore y = 7 - 3 = 4.

7 0
4 years ago
Read 2 more answers
Solve. 4(a + 2) = 14 – 2(3 – 2a)
kykrilka [37]

Answer:

C. All Real Numbers

Step-by-step explanation:

If you take any variable and do the math with that variable on both sides of the equation the answer is always balanced. So, the answer is C.


4 0
3 years ago
How to solve 5r/r+1=4-5/r+1
jenyasd209 [6]
MARK BRAINLIEST!!
So your solution is.
=−5
3 0
3 years ago
Please need help on this one not even sure on this
zlopas [31]

Answer:

I‘m pretty sure its a special right triangle, basically a 30, 60, 90 triangle. I checked with the formula and it’s correct. So the angle W is wither a 60 Degree or 30 degree and I‘m on the side of 30 degrees.

So I’m pretty sure its 30 degree.

The formuda is the hypotenuse is 2x and the (a) (3 in this case) is x. The 5 would come out as the formula 3\sqrt{3}. Now we know the sides, 3, 5 and 6 so we just plug it in and solve for the square root and it equals to ABOUT 5.

I’m not sure if I’m correct but I’m not confident.

7 0
3 years ago
The graph shows the relationship between the height of a tree and its age in years. What is the unit rate of growth for the tree
xxMikexx [17]

Answer:

The unit rate is 2 feet per year

Step-by-step explanation:

The graph is missing (See attachment)

To determine the unit growth;

First, we have to pick any two corresponding on the x and y axis

When x = 5; y = 10

When x = 1; y = 2

These can be represented as;

(x_1,y_1) = (5,10)

(x_2,y_2) = (1,2)

Next, is to determine the slope using;

m = \frac{y_2 - y_1}{x_2 - x_1}

Substitute values for x and y

m = \frac{2 - 10}{1 - 5}

m = \frac{-8}{-4}

m = 2

<em>Hence, the unit rate is 2 feet per year</em>

3 0
4 years ago
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