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3 years ago

For parallelogram ABCD, find the value of x

Mathematics

2 answers:

Len [333]3 years ago

7 0

Answer:16

Step-by-step explanation:

Ann [662]3 years ago

6 0

3x+20=5x-12
3x+20+12=5x-12+12
3x+32=5x
3x-3+32=5x-3
32=2x
32/2=2x/2
16=x
reflexive property of equality
x=16

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Which equation could be solved using this application of the quadratic formula? A. -2x2 â’ 8 = 10x â’ 3 B. 3x2 â’ 8x â’ 10 = 4 C

hodyreva [135]

The given question can be solve using quadratic formula.

The correct option is (c) $3x^2 +8x -10=-8$ .

Given:

The given equation is,

$x=\dfrac{-8\pm\sqrt{8^2-4(3)(-1)}} {2(3)}$ ---------------------------(1)

Write the general quadratic equation.

$ax^2 + bx +c=0$

Write the quadratic formula.

$x =\dfrac {-b \pm \sqrt{(b^2 - 4ac)} } {2a}$ ------------------------------- (2)

Compare equation (1) and (2).

$a=3\\b=8\\c=-2$

Substitute the value of $a$ , $b$ and $c$ in general quadratic.

$3x^2 +8x -2=0$

Subtract $8$ from each side of above equation.

$3x^2 +8x -2 -8=0-8\\3x^2 +8x -10=-8$

Thus, the correct option is (c) $3x^2 +8x -10=-8$ .

Learn more about quadratic equation here:

brainly.com/question/17177510

6 0

3 years ago

What is the slope of (-1,1) and (4,-1)

beks73 [17]

Answer:

-0.4

Step-by-step explanation:

Point A

(

)

= (-1, 1)

Point B

(

)

= (4, -1)

Objective :

Find the slope of a line that passes through points A and B.

Formula :

Slope

−

Solution:

Slope

−

m = -0.4

5 0

4 years ago

Plz help 25 pts and ill mark u brainliest

nika2105 [10]

Answer:

if your doing scientific notation then 2.7x10^3 would be the only one correct. if its not scientific notation then 27x10^3 would be more because it would be equivilent to <em>2700<27000</em>

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Please help me answer this

tekilochka [14]

Answer:

The answer is B

Step-by-step explanation:

Btw if its wrong im sorry

7 0

2 years ago

There are 5 red marbles, 7 green marbles, 4 black marbles, and 8 blue

DiKsa [7]

Answer:

red 21%

green 29%

black 17%

blue 33%

Step-by-step explanation:

total 5+7+4+8=24

red 5:24=0.21=21%

green 7:24=0.29=29%

black 4:24=0.16=17%

blue 8:24=0.33=33%

5 0

3 years ago