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Ad libitum [116K]
3 years ago
10

Plz help ! solve the following system of equations 5x+7y=23 9x+4y=7

Mathematics
1 answer:
Agata [3.3K]3 years ago
8 0

Answer: x = -1 y = 4  I got my answer by solving for one variable in the first equation and then substituting what I got for that variable into the second equation in place of that aforementioned variable then solving for the last variable.

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Plz tell me the aswer and how you worked it out. A tree grows to a height of 13.75m over 5 1/2 years. What is the average annual
marin [14]
1. Take your 13.75 and 5 1/2 and put it into a dividing table 
           _______
     5.5 I13.75               

                              you need to get your decimal out of deviser (5.5) will now be (55) because you moved the decimal over there you also need to move the decimal that is on the inside to and it will be (137.5)

2. When you divide you would get 2.5 

3. Now you would know how much the tree grew over the 5 1/2 years.

ANSWER:  2.5m a year!

Hope this helped! 

:)
4 0
3 years ago
How do I solve this problem?
Andrews [41]

so the line is dog so we know the full line is 60 units long. The 2 parts (do and og) add up to the full length so we can make the equation:

(4x-3)+(2x+21)=60

6x+18=60

6x=42

x=7

if you need to fine do or og, just plug in x to its equation

6 0
3 years ago
Which is the next step in the following construction of an equilateral triangle?
lord [1]

Answer:

Step-by-step explanation:

8 0
2 years ago
Solve for x. <br><br> x<br> 4<br> = <br> 3<br> 8
geniusboy [140]

Answer:

x=6

Step-by-step explanation:

( 8 ) ⋅ ( 3 ) = ( x ) ⋅ ( 4 )

6 0
2 years ago
Read 2 more answers
Can someone plz ummmm help me :))))))
kykrilka [37]

The sequence is geometric. Any exponential function models geometric growth. Recall the general nth term of a geometric sequence is a*(r)^(n-1) which is very similar to the form y = a*b^x. The big difference is that the x function is continuous while the function in terms of n is discrete. In this case, the common ratio is r = 1.10 to indicate we have 10% growth. Notice how 100%+10% = 1.00+0.10 = 1.10

----------------------------------------

The first quadrant is where x and y are both positive. Since x is the time in years, it doesn't make sense to talk about negative years or negative years have passed by. We can have a negative balance in a bank account, so it makes sense to have y be negative. However, Mr Sullivan starts with some positive amount and his account grows every year. So there's no way that y can be negative in this case.

----------------------------------------

The point (0,200) is the y intercept. It represents the starting amount he deposited into the account, which was the $200. Keep in mind that no other deposits were made, and he cannot pull money out of the account if he wants his account to grow according to the graph. Also, the interest rate must remain at 10%.

7 0
2 years ago
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