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3 years ago

Solve: 2x + y = 11 x + 3y = 3

Mathematics

1 answer:

kotegsom [21]3 years ago

4 0

Answer:

Step-by-step explanation:

Here you go mate

Step 1

2x + y = 11 and x + 3y = 3 Equation/Question

Step 2

x+3y=3 Substitute -2x+11 for y

x+3(-2x+11)=3

Step 3

x+3(-2x+11)=3 simplify

x=6

Step 4

y=-2x+11 Substitute 6 for x

y=-2(6)+11

Step 5

y=-2(6)+11 simplify

y=-1

answer

x=6

y=-1........hope this helps

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Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago

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Answer:

Step-by-step explanation:

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4 years ago

43 cents written as a percent of $1 can be written as..

xz_007 [3.2K]

43 percent

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4 years ago

Read 2 more answers

3. Let sin 21 = 0.358. What is the value of x for cos x=0.358?

r-ruslan [8.4K]

Answer:

$\cos(69)$

Step-by-step explanation:

We will use the co-function identity for sine, where:

$\sin(x)=\cos(90-x)$

Since sin(21)=0.358=cos(x). This means that:

$21=90-x$

Solve for x. Add x to both sides:

$x+21=90$

Subtract 21 from both sides:

$x=69\textdegree$

Hence:

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3 years ago