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slava [35]
2 years ago
13

7(x+y)^(2)+13x(x+y)-2^(2) help

Mathematics
1 answer:
artcher [175]2 years ago
6 0

Answer:

https://www.symbolab.com/solver/step-by-step/7%5Cleft(x%2By%5Cright)%5E%7B2%7D%2B13x%5Cleft(x%2By%5Cright)-2%5E%7B2%7D

Step-by-step explanation:

try this link

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Please help with problem and show work
luda_lava [24]

Answer:

x = 7

Step-by-step explanation:

The image below shows the relationship between secants chords and tangents.

Imagine that the letters in the image represent the numbers in the actually problem

E would equal 9

C would equal 12

and A would equal x

We would then use the same formula C² = E * ( E + A ) to solve for x , but once again instead of using letters we use the numbers in the problem

We would have 12² = 9( 9 + x )

we now solve for x

Step 1 simplify and distribute

12²=144

9 * 9 = 81

9 * x = 9x

we would then have 144 = 81 + 9x

step 2 subtract 81 from each side

144 - 81 = 63

81 - 81 cancels out

we now have 63 = 9x

step 3 divide each side by 9

63 / 9 = 7

9x / 9 = x

we're left with x = 7

7 0
3 years ago
URGENT PLEASE ANSWER!
zheka24 [161]

Answer:

<h2>YES</h2><h2>NO</h2><h2>YES</h2><h2>NO</h2>

Step-by-step explanation:

3x+7\\\\3\left(x+\dfrac{7}{3}\right)=(3)(x)+(\not3)\left(\dfrac{7}{\not3}\right)=3x+7\qquad\boxed{YES}\\_{\text{used the distributive property: a(b + c) = ab + ac}}\\\\x+x+x+5+1=(x+x+x)+(5+1)=3x+6\neq3x+7\qquad\boxed{NO}\\\\8x+3-5x+4=(8x-5x)+(3+4)=3x+7\qquad\boxed{YES}\\\\7x+3\neq3x+7\qquad\boxed{NO}

6 0
3 years ago
Lisa starts a different business account that pays simple interest every 1 point
nadezda [96]

Answer:

Interest rate=9%

Step-by-step explanation:

Interest rate=$3150×100%/$35000×1

Rate=315000/35000=9%

3 0
2 years ago
What is 2 hundredths in standard form in fifth grade
lord [1]

0.02

0._ is tenths and

0.0_ is hundredths

5 0
2 years ago
Read 2 more answers
Which measure is equivlent to 126 in.?<br> A. 3yd<br> B.3.5 yd<br> C.10.5 yd<br> D31.5 yd
tester [92]

Answer:

B

Step-by-step explanation:

1 yard = 3 feet = 36 in,

126 in / 36 in = 3.5 yards,

Therefore, the answer is B.

5 0
3 years ago
Read 2 more answers
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