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3 years ago

If 3x + 7y = 47, AND 2x - y = 3 What is the value x?

Mathematics

1 answer:

elixir [45]3 years ago

4 0

X=4
y=5
work shown below

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Determine which pair of points has a negative slope.

Mashcka [7]

It is C

all the other options have positive slopes

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4 years ago

What is the answer to (3-4i)+(2+5i)?

Wewaii [24]

$(3 + 2) + ( - 4i + 5i) \\ 5 + i$

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3 years ago

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Help me solve this please

drek231 [11]

Answer:

x is 46.67

y is 28.4°

Step-by-step explanation:

To solve for x we use sine

sin ∅ = opposite / hypotenuse

AC is the opposite

x is the hypotenuse

so we have

sin 59° = 40 / x

x sin 59 = 40

Divide both sides by sin 59

x = 40/sin 59

x = 46.67

To solve for y we also use sine

sin y = 30/ 63

y = sin^-1(30/63)

y = 28.4°

Hope this helps you

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4 years ago

Use the student statement to answer the following question.

pentagon [3]

The answer would be D.

8 0

3 years ago

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B<br> 8<br> 7<br> Find the length of "e" to the<br> nearest tenth using the<br> Pythagorean Theorem.

Juliette [100K]

Answer:

≈ 10.63

Step-by-step explanation:

Pythagorean Theorem... Possibly the most easy theory in math once you understood it.

Here's the formula.

$A^2+B^2=C^2$

AB would be the hypothenuse

BC would be the opposite

CA would be the Adjacent.

But let's not make it complicated though, the question is actually quite easy.

You are asked to find AB, the hypothenuse.

The hypothenuse would be C.

BC and CA would be A and B.

It doesn't matter where are you going to place the numbers.

So, $7^2 + 8^2$

$7^2 + 8^2 = 49 + 64\\$

= 113

Now we would have to square root 113 since $A^2+B^2=C^2$

$\sqrt{113}$ is an irrational number, and the question asks you to round ro the nearest tenth.

$\sqrt{113}$ =10.63014581

≈ 10.63

Your answer would be 10.63

<h2>Hope this answer helped :)</h2>

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3 years ago

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