3 years ago

Simplify the equation: (3√-5+2)(4√-12-1)

Mathematics

1 answer:

Maslowich3 years ago

8 0

Answer:

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Step-by-step explanation:

square root of a - # does not exist in the set of real numbers

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Figure ABCD is graphed on a coordinate plane.

Phoenix [80]

1. BC is 1+3=4 (units)

2. AD is 3+5= 8 (units)

3. Draw the altitude CH from point C, as shown in the figure.

4. Then triangle CHD is a right triangle, with hypothenuse CD, and sides HD and CH.

5. $CD^2=HD^2+CH^2$

$CD^2=2^2+4^2=4+16=20$

$CD= \sqrt{20}= \sqrt{4*5}= \sqrt{4} * \sqrt{5}=2 \sqrt{5}= 4.47$

6. AB=CD=4.47 because the trapezoid is isosceles.

7. P= BC+AD+AB+CD=4+8+4.47+4.47=20.9 (units)

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Use substitution to solve the<br> following system of equations.<br> 2x + 4y = 12 AND x=y - 3

Kamila [148]

Answer:

The solution is (0, 3)

Step-by-step explanation:

First, reduce 2x + 4y = 12 to x + 2y = 6, for easier calculations.

Next, substitute y - 3 for x in the other equation:

y - 3 + 2y = 6, or

3y = 9

Then y = 3. Since x = y - 3 in general, x = 3 - 3 = 0 when y = 3.

The solution is (0, 3)

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3 years ago

given that (-3,-5) and (-1,-4) are points on the same line, find a point slope form of the equation for this line

posledela

The answer to the question

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3 years ago

Joanie is making a map of the trails in the community park . Two of the trails start at the same point and a forty degree angle.

Grace [21]

Answer:

Draw a line on you paper, go to the start of the line and place your Protractor. Look for the 40 degree mark and place a little slash there. Take away the protractor and draw a line going through the slash. (Use a ruler too)

Step-by-step explanation:

For this you need a protractor

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She has 25 students and cupcakes are sold 6 in a package. How many packages needed to buy?

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5 packages. 4 is one cupcake short.

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