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Nana76 [90]
3 years ago
11

Please Help Me

Mathematics
1 answer:
Rufina [12.5K]3 years ago
4 0
$160 + $12.50= $172.50
$215 - $172.5= $42.50
Your answer is $42.50
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The expression x^4 - 16 is equivalent to :
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The correct answer is b
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what ratio was used on a table that has two sides. on one side the numbers are 12,20,28,and 36. on the other side the numbers ar
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Ratio is used 4:1 for the table that has 2 sides
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Solve for x please help me
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25 students tried out for the football team, but 40% only made the team. How many of the students made the football team? Provid
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Answer:

B. 10

Step-by-step explanation:

40\%  \: of \:  25  =  \frac{40}{100} \times 25 \\  \\  =  \frac{40}{4}   = 10

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3 years ago
Find the values of x, y, and λ that satisfy the system of equations. Such systems arise in certain problems of calculus, and λ i
Nimfa-mama [501]

Answer:

x=4, y=4, λ=-16

Step-by-step explanation:

We have this 3x3 system of linear equations:

4x+λ=0

4y+λ=0

x+y=8

So, let's rewrite the system in its augmented matrix form

\left[\begin{array}{cccc}4&0&1&0\\0&4&1&0\\1&1&0&8\end{array}\right]

Let´s apply row reduction process to  its associated augmented matrix:

Swap R1 and R3

\left[\begin{array}{cccc}1&1&0&8\\0&4&1&0\\4&0&1&0\end{array}\right]

R3-4R1

\left[\begin{array}{cccc}1&1&0&8\\0&4&1&0\\0&-4&1&-32\end{array}\right]

R3+R2

\left[\begin{array}{cccc}1&1&0&8\\0&4&1&0\\0&0&2&-32\end{array}\right]

Now we have a simplified system:

x+y+0=0

0+4y+λ=0

0+0+2λ=-32

Solving for λ, x, and y

λ=-16

x=4

y=4

3 0
3 years ago
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