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lesya692 [45]
3 years ago
14

Which is the best first step when solving the following system of equations?x+y=3 and 4x-y=7

Mathematics
1 answer:
fomenos3 years ago
8 0

I think it would be x+y=3

Hope this helps


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I need some help plz
aksik [14]

Answer:

B

Step-by-step explanation:

The most reasonable one is B because its 7 for side B and the rest for B are either bigger or equal to the given number

3 0
2 years ago
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Which equation is not a linear equation? Question options: a) –4v + 2w = 7 b) x4= y c) x = -5 d) 2x + 3y = 5
Semmy [17]

Answer: Option b

x^4= y

Step-by-step explanation:

Linear equations have the following form:

a_1x^n + a_2y^m + a_3w^s + a_4v^h = b

Where the exponents n, m, s and h are always 0 or 1

To know which equations are nonlinear, identify among the options given, those that have exponents other than 1 or 0

Note that in option b) the exponent of the variable x is n = 4 therefore the equation is nonlinear

Finally the answer is the option b

3 0
3 years ago
What is the value of the expression 1/2(6x9x1)+15
Vanyuwa [196]

Answer:

the answer of the expression is 42

Step-by-step explanation:

PEMDAS parenthesis are first so we start out with 6x9x1 and the answer to that is 54, next is MULTIPLICATION so we take 1/2 times 52 which is 27 then next is ADD so we add 15 and the answer is 42

5 0
3 years ago
Cole needs at least $815 to cover travel and hotel expenses for an upcoming national singing competition. He is setting up a wee
Ratling [72]
It would take 6 weeks for Cole to make 750$ and the 65$ he had received from the open mic would make it 815$
3 0
3 years ago
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caleb and emily are standing 100 yards from each other. caleb looks up at a 45 degree angle to see a hot air balloon. Emily look
Sunny_sXe [5.5K]
Check the picture below.

thus then

\bf \begin{cases}
y=100-a\\
y=a\sqrt{3}
\end{cases}\implies 100-a=a\sqrt{3}\implies 100=a+a\sqrt{3}
\\\\\\
100=a(1+\sqrt{3})\implies \boxed{\cfrac{100}{1+\sqrt{3}}=a}
\\\\\\
\textit{what is the altitude \underline{y} then?}\qquad y=100-a
\\\\\\
y=100-\cfrac{100}{1+\sqrt{3}}\implies y\approx 63.39745962156~yards

8 0
3 years ago
Read 2 more answers
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