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Leto [7]
3 years ago
13

Is the answer a, b, c, or d?

Mathematics
1 answer:
lbvjy [14]3 years ago
6 0
I hope this helps you

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And, S2
dangina [55]

<u>Correct Question</u>

In the table shown, the sum of each row is shown to the right of the row and the sum of each column is shown below the column. What is the value of L?

\left|\begin{array}{c|c|c|c}-&-&-&-\\J&K&J&5\\K&K&L&13\\L&J&L&15\\-&-&-&-\\11&7&15\end{array}\right

Answer:

L=7

Step-by-step explanation:

From the first row: 2J+K=5

Therefore: K=5-2J

From the second column, 2K+J=7

Substitute K derived above into 2K+J=7

2K+J=7

2(5-2J)+J=7

10-4J+J=7

-3J=7-10

-3J=-3

J=1

Recall: K=5-2J

K=5-2(1)=3

K=3

From the third column, J+2L=15

1+2L=15

2L=15-1=14

L=7

Therefore, the value of L=7

CHECK:

\left|\begin{array}{c|c|c|c}-&-&-&-\\1&3&1&5\\3&3&7&13\\7&1&7&15\\-&-&-&-\\11&7&15\end{array}\right

4 0
3 years ago
What are the solutions of the equation 6x2 +5x+1 = 0 ?
STatiana [176]

Answer:

Step-by-step explanation:

6x^2+5x+1=0

Descr= b^2-4ac

Descr= 25-24=1

X1= (-b+√descr)/2a = (-5+1)/12= -1/3

X2= (-b-√descr)/2a = (-5-1)/12= -1/2

6 0
3 years ago
Read 2 more answers
Evaluate log12 - log4 + log5 and can you explain it to me?
mario62 [17]
Remember some simple log rules

log(a)+log(b)=log(ab)
and
log(a)-log(b)=log(\frac{a}{b})

work from left to right

log(12)-log(4)+log(5)=
log(\frac{12}{4})+log(5)=
log(3)+log(5)=
log(3*5)=
log(15)
7 0
3 years ago
Use the graph that shows the solution to f(x)=g(x).
madreJ [45]

Answer:

-2

Step-by-step explanation:

if showing in graph would be minus 2

8 0
3 years ago
What is five fourths of a right angle
MrRa [10]
A right angles is 90 degrees
if you mean 5/4 of the MEASURE of a right angle then
90 times 5/4 (because in math 'of' means multiply)
90 tmes 5/4=450/4=225/2=112.5 degrees
7 0
3 years ago
Read 2 more answers
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