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3 years ago

Help I would love the help.

Mathematics

1 answer:

MAXImum [283]3 years ago

8 0

Your answer would be D. It is one-half the area of a rectangle with sides 4 units x 3 units. This is how you solve these problems. You have to draw a rectangle around the triangle Think about it, It wouldnt be double the surrounding rectangle and the dimentions are 3 x 4, not 4 x 4.

Hope I was most help to you!

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What are the domain and range of y=cot x? Select one choice for domain

Lostsunrise [7]

The domain is $\boxed{x \neq n\pi}$ , where n is an integer.

This is because cot x = 1/tan(x), and if tan x = 0, then the fraction is undefined.

The range is <u>all real numbers</u>.

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1 year ago

Drag and drop question I need help on ASAP

klasskru [66]

[] Similar

-> The triangles are similar because they were "mirrored" by the...

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-> ... by the SSS similarity theorem, the sides are...

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3 years ago

Need to solve 5t-2r=25 for t

postnew [5]

5t = 25+2r
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7 0

3 years ago

Complete the proof for the following conjecture.

Ray Of Light [21]

Answer:

Statements Reasons

AC+CD=AD and AB+BD=AD Segment Addition Postulate

AC+CD=AB+BD Transitive/Substitution Property

AC=BD Given

BD+CD=AB+BD Substitution Property

CD=AB Subtraction Property

AB=CD Symmetric Property

Step-by-step explanation:

By segment addition postulate, we can say the following two equations:

AC+CD=AD and AB+BD=AD.

By either substitution/transitive property, you can say AC+CD=AB+BD.

You are given AC=BD, so we use substitution and write AC+CD=AB+AC.

After using subtraction property (subtracting both sides by AC), you obtain CD=AB.

By symmetric property, you may say AB=CD.

So let's write it into the 2 column-proof you have there:

Statements Reasons

AC+CD=AD and AB+BD=AD Segment Addition Postulate

AC+CD=AB+BD Transitive/Substitution Property

AC=BD Given

BD+CD=AB+BD Substitution Property

CD=AB Subtraction Property

AB=CD Symmetric Property

Properties/Postulates used:

Transitive property which says:

If a=b and b=c, then a=c.

Substitution property which says:

If a=b, then b can be substituted(replaced with) for a.

Subtraction property which says:

a=b implies a-c=b-c.

Segment Addition Postulate says:

If you break a segment into two smaller pieces then the measurement of that segment is equal to the sum of the smaller two segments' measurements.

3 0

3 years ago

Need help please ! parallelogram

OverLord2011 [107]

Answer:

11). m∠W = 70°

12). m∠M = 95°

13). m∠Q = 135°

14). m∠Q = 55°

15). m∠X = 110°

Step-by-step explanation:

11). m∠W + m∠X = 180° [Consecutive interior angles]

(24x - 2) + (36x + 2) = 180°

60x = 180°

x = $\frac{180}{60}$

x = 3

Therefore, m∠W = (24x - 2)°

m∠W = (24×3 - 2)

= 72 - 2

= 70°

Since opposite angles of a parallelogram are equal in measure.

m∠Y = m∠W = 70°

12). m∠J + m∠K = 180° [Consecutive interior angles]

(6x + 19) + (8x + 7) = 180°

14x + 26 = 180

14x = 180 - 26

14x = 154

x = $\frac{154}{14}$

x = 11

m∠K = (8x + 7)

m∠K = 8×11 + 7

m∠K = 95°

Since m∠M = m∠K

Therefore, m∠M = 95°

13). m∠Q = m∠S [Opposite angles of a parallelogram]

x + 135 = 2x + 135

2x - x = 0

x = 0

Therefore, m∠Q = 135°

14). m∠Q = m∠S [Opposite angles of a parallelogram]

14x - 1 = 13x + 3

14x - 13x = 3 + 1

x = 4

m∠Q = (13x + 3)

= 13×4 + 3

= 52 + 3

m∠Q = 55°

15). m∠Z = m∠X

(19x - 4) = (17x + 8)

19x - 17x = 12

2x = 12

x = 6

m∠X = (17x + 8)°

m∠X = 17×6 + 8

m∠X = 110°

5 0

3 years ago