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goldenfox [79]
3 years ago
12

Work out the value of x

Mathematics
1 answer:
Minchanka [31]3 years ago
6 0

Answer:

67.5

Step-by-step explanation:

right angle =90 degree

total = 360 degree

360-90=270

270÷4=67.5

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Complete the square to the problem X^2+6x-16=0
marishachu [46]

Answer:

<h2>x = -8 or x = 2</h2>

Step-by-step explanation:

(a+b)^2=a^2+2ab+b^2\qquad(*)\\\\-------------------------------\\\\x^2+6x-16=0\qquad\text{add 16 to both sides}\\\\x^2+6x=16\\\\x^2+2(x)(3)=16\qquad\text{add}\ 3^2\ \text{to both sides}\\\\\underbrace{x^2+2(x)(3)+3^2}_{(*)}=16+3^2\\\\(x+3)^2=16+9\\\\(x+3)^2=25\Rightarrow x+3=\pm\sqrt{25}\\\\x+3=-5\ \vee\ x+3=5\qquad\text{subtract 3 from both sides}\\\\\boxed{x=-8\ \vee\ x=2}

3 0
3 years ago
If I can walk 9673.6 meters in 5 hours. How far can I walk in 70 minutes. ( I need the work)
den301095 [7]

First, convert 5 hours into minutes:

5 hours 60 min

------------ * --------------- = 300 min

1 1 hr

Next, find the unit rate in m/min:

9673.6 m

--------------- = 32.24 m/min

300 min

Now find the distance you can walk in 70 minutes at this rate:

32.24 m

------------- * 70 min = 2247 meters (answer)

1 min

You could walk 2247 meters (to the nearest meter) in 70 minutes.

6 0
3 years ago
What value of d makes the equation 5d-3=2d+6 true?<br><br><br>I NEED HELP WITH THIS ASAP
Annette [7]

Answer:

the answer for this question is 3

5 0
3 years ago
Read 2 more answers
(1) In the State of Michigan there is a 6% sales tax, so if you purchase a
Alex17521 [72]

Answer:

1:0.06

Step-by-step explanation:

since there is a 6% sales tax, which is the same as 0.06. to calculate your tax, you would multiply both of the sides of the ratio by 75, and the left side will show you subtotal of what you are buying, the right will show tax.

7 0
3 years ago
Can I get help please!
Naily [24]
55x5 - 40x5
The third one down
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3 years ago
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