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3 years ago

Using the segment addition postulate, which is true?

Mathematics

2 answers:

gulaghasi [49]3 years ago

7 0

The answer is BC + CD = BD

Reika [66]3 years ago

5 0

Answer: The answer is (d) BC + CD = BD.

Step-by-step explanation: We are given the number line and four points A, B, C and D on the line with co-ordinate -6, -1, 2 and 8 respectively.

We are to select the correct statement out of the given four.

(a) L.H.S. = AB + BC = 5 + 3 = 8,

R.H.S = AD = 14 ≠ 8.

So, this option is incorrect.

(b) L.H.S. = AB + BC = 5 + 3 = 8,

R.H.S = CD = 6 ≠ 8.

So, this option is incorrect.

R.H.S = AD = 14 ≠ 9.

So, this option is incorrect.

(d) L.H.S. = BC + CD = 3 + 6 = 9,

R.H.S = BD = 9.

So, this option is correct.

Thus, the correct option is (d).

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In TVW if VW is three meters longer than TV, TW is 20 meters shorter than the sum of VW and TV, and the perimeter of TVW is 74 m

Artyom0805 [142]

Answer:

The length of VW is $25\ m$

Step-by-step explanation:

we know that

The perimeter of triangle TVW is equal to

$P=VW+TV+TW$

we have

$P=74\ m$

$74=VW+TV+TW$ -----> equation A

$VW=TV+3$ ----> equation B

$TW=(VW+TV)-20$ ----> equation C

substitute equation B in equation C

$TW=(TV+3+TV)-20$

$TW=2TV-17$ ----> equation D

substitute equation B and equation D in equation A

$74=(TV+3)+TV+(2TV-17)$

solve for TV

$74=4TV-14$

$4TV=74+14$

$4TV=88$

$TV=22\ m$

Find the value of VW

$VW=TV+3$ -----> $VW=22+3=25\ m$

Find the value of TW

$TW=2TV-17$ -----> $TW=2(22)-17=27\ m$

6 0

4 years ago

PLEASE ANSWER

charle [14.2K]

Answer:

The slope intercept form is $y=\frac{1}{2}x-5$

Step-by-step explanation:

Given : Equation $y+3=\frac{1}{2}(x-4)$

To find : Rewrite the equation in slope-intercept form ?

Solution :

The slope-intercept form is $y=mx+c$

Equation $y+3=\frac{1}{2}(x-4)$

$y+3=\frac{1}{2}x-\frac{1}{2}\times 4$

$y+3=\frac{1}{2}x-2$

$y=\frac{1}{2}x-2-3$

$y=\frac{1}{2}x-5$

Therefore, the slope intercept form is $y=\frac{1}{2}x-5$

3 0

4 years ago

2 1/3 x -1 1/2=? Awarding Brainlyest lol

Nastasia [14]

Answer:

-3.5 or 3 1/2

Step-by-step explanation:

5 0

3 years ago

A radio active isotope decays according to the exponential decay equation where t is in days. Round to the thousandths place. Th

Whitepunk [10]

To calculate the value of the half life we proceed as follows;
a/2=ae^(-2.360t)
the a(s) will cancel and we shall remain with:
1/2=e^-2.360t
introducing the natural logs we get:
ln (1/2)=ln e^(-2.360t)
ln(1/2)=-2.360t
hence;
t=(ln 0.5)/(-2.360)
t=0.294
the answer is t=0.294

8 0

3 years ago

The ingredients for your braised ribs cost $11.32. You sell it for $20. What is

alex41 [277]

Answer:

.03472

Step-by-step explanation:

take sell price $20. subtract cost of 11.32 which equals 8.68. then divide 8.68 by the sell price $20

The formula for contribution margin is the sales price of a product minus its variable costs. In other words, calculating the contribution margin determines the sales amount left over after adjusting for the variable costs of selling additional products.

6 0

3 years ago

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