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3 years ago

2x+4-3x=-11 what is the answer

Mathematics

2 answers:

Pie3 years ago

8 0

You want the xs and the numbers on different sides.
2x-3x=-11-4
-x=-15
divide x by a -1
x=15

11111nata11111 [884]3 years ago

3 0

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Suppose A is n x n matrix and the equation Ax = 0 has only the trivial solution. Explain why A has n pivot columns and A is row

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Answer:

Remember, a homogeneous system always is consistent. Then we can reason with the rank of the matrix.

If the system Ax=0 has only the trivial solution that's mean that the echelon form of A hasn't free variables, therefore each column of the matrix has a pivot.

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Dmitry [639]

Answer:

Option D. 3:1, $120

Step-by-step explanation:

The complete question in the attached figure

Part 1) What is the ratio between the amount of money contributed by Anna and the amount contributed by her mother?

Let

x -----> the amount of money contributed by Anna

y ----> the amount of money contributed by her mother

we know that

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substitute the values

$\frac{x}{y}=\frac{300}{100}=\frac{3}{1}$

Part 2) What was the total amount saved in April?

we know that

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Please help! I’ll mark brainlest :/

mafiozo [28]

B. is the answer if you look closely

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3 years ago