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sasho [114]
2 years ago
9

Is (-1, -1) a solution to this system of equations? y = -8x - 9 y = -5x – 6 yes no

Mathematics
1 answer:
ollegr [7]2 years ago
8 0

Answer:

Yes

Step-by-step explanation:

To see is (-1, -1) is a solution to the system, we can plug it into the system to check:

-1 = -8(-1)-9

-1 = 8-9

-1 = -1

-1 = -5(-1)-6

-1 = 5-6

-1 = -1

Both of the equations are true, therefore (-1, -1) is a solution to the system.

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2 divided by one over 3 the awnser is a fraction
slamgirl [31]

Answer:

That would equal \frac{2}{3} or approximately 0.67. If this helps, please rank Brainliest. Thanks!

4 0
3 years ago
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Suppose that w and t vary inversely and that t = 5/12
Svetlanka [38]

Answer:

Option B. t=5/3w ;1/3

Step-by-step explanation:

We are told that w varies Inversely with t thus generally speaking w∝\frac{1}{t}  since they are inverted, <u>otherwise</u> if they were proportionally varied then w∝t. This means that there is a constant value ( a ) for which w is inversely proportional to t and can be mathematically expressed as:

w=\frac{a}{t}        Eqn. (1)

Now since we are given the values of w=4 and t=\frac{5}{12}, we can plug them in Eqn. (1) and find our constant of proportionality a as follow:

w=\frac{a}{t}\\ \\a=wt\\\\a=(4)(\frac{5}{12} )\\\\a=\frac{5}{3}

Now that we have our constant we can find the new t value for the second value of w=5 as follow:

w=\frac{a}{t} \\\\t=\frac{a}{w}\\ \\t=\frac{\frac{5}{3} }{5}\\\\t=\frac{5}{15}\\ \\t=\frac{1}{3}\\

Therefore based on the options give, we can see that Option B. is correct since

t=\frac{5}{3w} and for w=5, then t=\frac{1}{3}

8 0
3 years ago
Find the value of 21 + 4(32 - 5).<br> 37<br> 25<br> 100
Andrews [41]

Answer:

the answer will be 129 i think

6 0
3 years ago
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A set of three scores consists of the values 3, 7, and 2. Σ2(X – 3) =
siniylev [52]

Answer:

6

Step-by-step explanation:

\sum 2(X-3)=2(3-3)+2(7-3)+2(2-3)=0+8-2=6

5 0
2 years ago
Let p: The kitchen is clean. Let q: The bedroom is clean. Which statement is true if the kitchen is clean but the bedroom is not
Ivan

P = The kitchen is clean → TRUE

Q = The bedroom is clean → FALSE


1) If P is true, then Q is true. → False statement

2) Statement Q is true if and only if P is true. → False statement

3) Both p and q are true. → False statement

4) Statement P or Q is true. → True statement ⇒ Statement P is true.


The answer is: The statement "Statement P or Q is true" is true.


There you go! I really hope this helped, if there's anything just let me know! :)


4 0
3 years ago
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