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konstantin123 [22]
3 years ago
9

Find the perimeter of this quadrilateral

Mathematics
1 answer:
Paha777 [63]3 years ago
6 0
\bf (x^2-6)~~+~~(2x+5)~~+~~(x^2-3x)~~+~~(4x^2+2x)
\\\\\\
6x^2+4x-3x-6+5\implies 6x^2+x-1
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The ratio of money in Terry's bank account to Faye's bank account was 3:7. Terry then put £220 in his account and Faye withdrew
Nadusha1986 [10]

Answer:

Terry initially had £390

Step-by-step explanation:

The ratio of the original amount is 3:7

Let the original amount Terry has be t and the original amount Faye has be f

3/7 = t/f

or simply 3f = 7t ••••••(i)

Terry putting 220 means he now has

t + 220

Faye withdrew 300

He now has f-300

These values are equal

t + 220 = f-300

f = t+220+300

f = t + 520 ••••••(ii)

Put ii into i

3(t + 520) = 7t

3t + 1560 = 7t

7t-3t = 1560

4t = 1560

t = 1560/4

t = 390

4 0
3 years ago
What are the center and radius f the circle with equation xthe power of 2 +y power of 2 -4x -6y +8=0
Dovator [93]
<span>x² +y² -4x -6y +8=0
(x² -4x) +(y² -6y) = -8
We are going to complete square for x and y,
it should look like a²+2ab+b² = (a +b)², or </span>a²-2ab+b² = (a -b)²,
<span>
(x²-2*2x+2²) -2² + (y²-2*3y +3²)-3²=- 8
(x-2)²+(y-3)²-4-9=-8
</span>(x-2)²+(y-3)²=-8+13
(x-2)²+(y-3)²=5
<span>
Formula a circle (x-h)²+(y-k)²=R², where vertex has coordinates (h, k) 

So , for our circle  vertex (2,3) and radius = </span>√5<span>


</span>
6 0
3 years ago
When i was 18 years old, my sister was half my age. Now I am 82 years. How old is my sister now?​
iVinArrow [24]

Answer:

41 \:  \:  \: years \:  \:  \: old

Step-by-step explanation:

me \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: sis \\ 18 \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: 9 \\ 82 \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  x \\  \\ use \:  \: cross \: \\  multipaction \\ \\  18x = 82 \times 9 \\ 18x = 738 \\  \frac{18x}{18}  =  \frac{738}{18}  \\ x = 41

4 0
3 years ago
Read 2 more answers
Lin bought 4 bags of apples. Each bag had the same
sashaice [31]

Answer:

I do not see any diagrams. Though she had 32 apples before she ate any, 8 in each bag.

6 0
3 years ago
Rachel loves to bake cookies, but she has an old oven that has trouble maintaining a constant temperature. Assume the acceptable
denis-greek [22]

Answer:

3.00

Step-by-step explanation:

USL = 350+18 = 368

z = (USL-Mean)/6*σ = (368-350)/6*σ

σ = 3/0.9999966 = 3.00 (approx)

7 0
3 years ago
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