1 year ago

What is the value of x and y?

Mathematics

1 answer:

ladessa [460]1 year ago

5 0

Answer:

x=16 and y=9

Step-by-step explanation:

2y+30=3y+21[Diagonals of parallelogram are equal]

30-21=3y-2y

y=9

3y=2x-5[Diagonals of parallelogram are equal]

3×9=2x-5

27=2x-5

2x=27+5

x=32/2=16

You might be interested in

Convert 3.2 repenting decimal into a fraction

Olenka [21]

$x =3.\bar{2}\\10x = 32.\bar{2}\\\\ 10x - x = 32.\bar{2} - 3.\bar{2}\\9x = 29\\x = \frac{29}{9}\\\\\\ \boxed{\bf{\frac{32}{9} = 3.\bar{2}}}$

7 0

2 years ago

Evaluating Algebraic Expressions

koban [17]

D + t = total earnings
$3h + t = total earnings
$3h + $22 = total earnings

Fill in h as however many hours she is working.
Example: She worked for 8 hrs and got $22 in tips.
$3(8) + $22 = ?
$24 +$22 = $46

6 0

2 years ago

The difference of two numbers is 8. If the sum of the smaller number and the square of the larger number is 148, what is the sma

Mice21 [21]

Answer:

140

8 minuses by 148 is 140

4 0

3 years ago

-54 °c converted to kelvin is k.

Agata [3.3K]

$T_{[K]}=t_{[^oC]}+273.15\\\\t_{[^oC]}=-54\\\\subtitute\\\\T_{[K]}=-54+273.15=219.15\approx219\\\\Answer:\boxed{-54^oC=219.15K\approx219K}$

7 0

3 years ago

Read 2 more answers

Use your knowledge of scientific notation, SI prefixes, conversion factors, and

mixas84 [53]

1 x 10^10 or 10000000000

4 0

3 years ago