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3 years ago

3-7 Please Help BRAINLEST

Mathematics

2 answers:

Misha Larkins [42]3 years ago

7 0

Answer : r = 7
Using transposition method taking 10 to LHS will be -10
= r = 17-10
r = 7
Verification :
17 = r + 10
17 = 7+10
17 = 17
HENCE, LHS=RHS

9966 [12]3 years ago

5 0

Hi there! Hopefully this helps!

----------------------------------------------------------------------------------------------

<h2>Answer: r = 7.</h2><h2>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</h2>

$17 = r + 10$

Swap sides so that all variable terms are on the left hand side.

$r + 10 = 17$

Subtract 10 from both sides.

$r = 17 - 10$

<h2>Subtract 10 from 17 to get, you guessed it, 7!</h2>

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Please help!!!!!!!!!!!

Assoli18 [71]

<u>Let's take this problem step by step:</u>

<u>To find the ordered pair of the system:</u>

⇒ must set both equations equal to each other

⇒ and solve for 'x'

<u>Let's solve:</u>

$x^2-2x+3=-2x+19\\x^2-2x+2x+3-19=0\\x^2-16=0\\(x+4)(x-4)=0$

<u>Let's find the x-values:</u>

$(x-4)=0\\x=4\\\\(x+4)=0\\x=-4$

<u>Let's find f(x)'s value for each 'x':</u>

$x=4\\f(4)=-2(4)+19=-8+19=11\\\\x=-4\\f(-4)=-2(-4)+19=8+19=27$

<u>Answer: (4, 11), (-4,27)</u>

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#LearnwithBrainly

3 0

1 year ago

sarah is currently making 39,000 a year at her job and had been offered a raise to 43,290 per year what would be the percent inc

Ivan

43290-39000=4290
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8 0

3 years ago

What is the perimeter of the figure in the diagram (round to three decimal places if necessary)?

Y_Kistochka [10]

Perimeter (p) = length around a shape.
So any horizontal sides we can add based upon their length in x-values and any vertical sides we can add based upon their length in y-values. The diagonal sides we can find by the distance formula:
$d = \sqrt{( {(x2 - x1)}^{2} + {(y2 - y1)}^{2} }$
So the bottom base goes from x=1 to x=8, then up 1, right 1, and up from y=3 to y=9, then left from x=9 to x=6, down from y=9 to y=6, left from x=6 to x=3.
So far that is: (8-1)+1+1+(9-3)+(9-6)+(9-6)+(6-3)
= 7+2+6+3+3+3 = 24
Now for the diagonal:
$d = \sqrt{( {(x2 - x1)}^{2} + {(y2 - y1)}^{2}) } \\ = \sqrt{( {(3- 1)}^{2} + {(6 - 2)}^{2} )} \\ = \sqrt{( {2}^{2} + {4}^{2} )} = \sqrt{(4 + 16)} \\ = \sqrt{20} = 2 \sqrt{5} = 4.47$
P = 24 + 4.47 = 28.47
D) 28.472

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