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olganol [36]
3 years ago
13

Please help!! what is the value of x? enter your answer

Mathematics
1 answer:
Jet001 [13]3 years ago
8 0

Answer:

<h2>x = 27</h2>

Step-by-step explanation:

BR is parallel to QC therefore ΔBDR and ΔQDC are similar.

The sides are in proportion:

\dfrac{BD}{QD}=\dfrac{RD}{CD}

We have

BD = 26 + 39 = 65

QD = 39

RD = 18 + x

CD = x

Substitute:

\dfrac{65}{39}=\dfrac{18+x}{x}          <em>cross multiply</em>

65x=39(18+x)      <em>use distributive property</em>

65x=(39)(18)+39x              <em>subtract 39x from both sides</em>

26x=702            <em>divide both sides by 26</em>

\boxed{x=27}

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False, only three countries have not adopted the metric system.

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3 years ago
What are the values Of p and q ?​
ValentinkaMS [17]

The values of p and q in the function f(x) = 2x³ + 17x² - 3px - 5q is p = 8, q = 27

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more variables and numbers.

x - 3 (i.e. x = 3) and x + 9 (i.e. x = -9) are factors of f(x) = 2x³ + 17x² - 3px - 5q

Hence:

f(3) = 0

2(3)³ + 17(3)² - 3p(3) - 5q = 0  (1)

Also:

2(-9)³ + 17(-9)² - 3p(-9) - 5q = 0  (2)

Hence, p = 8, q = 27

The values of p and q in the function f(x) = 2x³ + 17x² - 3px - 5q is p = 8, q = 27

Find out more on equation at: brainly.com/question/2972832

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8 0
2 years ago
PLEASE HELP ASAP!!
QveST [7]

Answer:

The radius of the circle is 3.5 inches.

Step-by-step explanation:

The radius is half the diameter:R= 1/2 d

Substitute the value of d (7 inches) in the formula to find r:

r= 1/2 x 7 in

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7 0
4 years ago
Read 2 more answers
!!!!!!! I NEED THE WORK PLS ILL GIVE BRAINLIST!!!
dexar [7]

Answer:

1. 4 and 4sqrt2

2. 6sqrt2 and 6sqrt2

3. 5 and 5sqrt2

4. 5sqrt2 and 5sqrt2

5. 6 and 6

6. 8 and 8sqrt2

7. sqrt3 and sqrt6

8. sqrt2 and sqrt4

Step-by-step explanation:

3 0
3 years ago
Given () = −^3 + 2^2 +(3/2) be the position of a particle moving along the x-axis at time t. At what time will the instantaneous
cestrela7 [59]

Answer:

5.266 secs

Step-by-step explanation:

Lets assume ; p(t) = t^-3 + 2^2 + ( 3/2 ) is the particle position along x-axis

time interval [ 0, 4 ]

Average velocity = Displacement / time

                            = p( b ) - p( a ) /  b - a -------- ( 1 )

where a = 0 , b = 4 ( time intervals )

Back to equation 1

Average velocity = [ ( 4^-3 + 4 + (3/2) ) - ( 0 +  4 + (3/2) ) ] / 4

                             = 3.9 * 10^-3 ----- ( 2 )

Instantaneous velocity = d/dx p(t)

                                      = - 3/t^4  ------ ( 3 )

To determine the time that the instanteous velocity = average velocity

equate equations (2) and (3)

3.9*10^-3 = - 3 / t^4

t^4 = - 3 / ( 3.9 * 10^-3 ) = - 769.231

hence t = \sqrt[4]{- 769.231 } = 5.266 secs

we ignore the negative sign because time can not be in the negative

4 0
3 years ago
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