Answer:
169
Step-by-step explanation:
x−2=13
First find the value of x
x-2+2 = 13+2
x = 15
Now substitute into the expression
x^2 -4x+4
15^2 -4*15+4
225 - 60+4
165+4
169
It will be 7 seconds because you need to find out one, how many feet you can do per second and that number is 3. Therefore you can do 21/3 and you get an answer of 7. Hope this helped! ♀️
Answer:
Step-by-step explanation:
We want to find the square root of 50;
We need to first rewrite 50 as a prime factorization.
We now split the square root to get:
Take square root to get:
To the nearest tenth we have
Answer: -2m - 3n
Step-by-step explanation:
a(m+n)/a(−2n−m) = 1/ax
<u />
<u>Rewrite the equation as 1/ax = am+n/a−2n−m.</u>
1/ax = am+n/a−2n−m
<u>Take the natural logarithm of both sides of the equation to remove the variable from the exponent.</u>
ln( 1/ax ) = ln ( am+n/a^{−2n−m})
<u>Expand the left side.</u>
−x ln(a) = ln (am+n/a^{−2n−m})
<em><u>Expand the right side.</u></em>
−x ln (a) = (m + n) ln (a) − (−2n − m) ln (a)
<u>Simplify (m + n) ln (a) − (−2n − m) ln (a).</u>
−x ln (a) = 2m ln (a) + 3n ln (a)
<u>Move all the terms containing a logarithm to the left side of the equation.</u>
−x ln (a) −2m ln (a) − 3n ln (a) = 0
<u />
<u>Move all terms not containing x to the right side of the equation.</u>
−x ln (a) = 2m ln (a) + 3n ln (a)
<u>Divide each term by −1 ln (a) and simplify.</u>
x = −2m − 3n
pls give brainliest :)
Answer/Step-by-step explanation:
Apply the formula for area of a triangle with an included angle and two given side lengths, A = ½*a*b*Sin(θ)
15. a = 3 cm,
b = 3 cm,
θ = 140°
A = ½*3*3*Sin(140)
A = 2.89 ≈ 2.9 cm² (nearest tenth)
16. a = 5 yd,
b = 8 yd,
θ = 98°
A = ½*5*8*Sin(98)
A = 19.81 ≈ 19.8 yd² (nearest tenth)
17. a = 5 cm,
b = 6 cm,
θ = 152°
A = ½*5*6*Sin(152)
A = 7.04 ≈ 7.0 cm² (nearest tenth)
17. a = 5 m,
b = 6 m,
θ = 150°
A = ½*5*6*Sin(150)
A = 7.5 ≈ 7.5 m² (nearest tenth)