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2 years ago

15

56÷38472

alt="56 \sqrt{38472 = } " align="absmiddle" class="latex-formula">

1 answer:

goldenfox [79]2 years ago

3 0

The answer is 0.00145560407

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(-3+7i)(1-2i) can you help me with the answer to this

lozanna [386]

Answer:

11 + 13i

Step-by-step explanation:

A must know is that

$\sqrt{i} = - 1$

Complex numbers

1st: foil the equations

$- 3(1 - 2i) + 7i(1 - 2i)$

$- 3 + 6i + 7i- 14 {i}^{2}$

2nd Combine like terms and substitute

$i ^{2} for \: - 1$

$- 3 + 14 + 13i$

$11 + 13i$

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1 year ago

A lot is in the shape of a triangle. One side is 100 ft longer than the shortest side, while the third side is 700 ft longer tha

vaieri [72.5K]

We have the next information

x= the shortest side measure

y= the second side measure

y=x+100

z= the third side measures

z=x+700

We know also that the perimeter is 2900 ft

Therefore the equation for the perimeter of the triangle will be

$P=x+y+z$ $2900=x+x+100+x+700$

we sum like terms

$2900=3x+800$

then we isolate the x

$3x=2900-800$ $3x=2100$ $x=\frac{2100}{3}=700$

therefore

x=700ft

y=700+100=800ft

z=700+700=1400ft

The lengths of the sides of the lote are 700 ,800, and 1400 ft,

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1 year ago

What does it mean to say that a data point has a residual of 0

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<span>It means that the point lies directly on the regression line.
</span>

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3 years ago

What is 20×40+3×9÷3+4

-Dominant- [34]

<span><span /><span>The answer to that problem is 813. When you are given a problem like this, you can answer it by using the MDAS technique. MDAS stands for multiplication, division, addition, and subtraction. Since you are following the MDAS technique, you are asked to answer the equation based on MDAS order. To put this simply, look at the example below:

   20x40+3x9/3+4
     800+3x9/3+4
     800+27/3+4
   800+9+4
   809+4
     813</span></span>

You can clearly see the MDAS order by following the bold text.

5 0

2 years ago

Read 2 more answers

Please help me with this:(

dolphi86 [110]

Answer:

Y = 32.7°

Step-by-step explanation:

We will apply the Cosine law in the given triangle XYZ,

x = 90 ft

y = 55 ft

z = 50 ft

We have to find the measure of angle Y.

y² = x² + z² - 2xzCosY

(55)² = (90)² + (50)² - 2(90)(50)cosY

3025 = 8100 + 2500 - 9000.cosY

9000.cosY = 10600 - 3025

cosY = $\frac{7575}{9000}$

= 0.84167

Y = $\text{cos}^{-1}(0.84167)$

Y = 32.68 ≈ 32.7°

Therefore, measure of angle Y = 32.7°

5 0

2 years ago