Answer: x=15
Step-by-step explanation:
15×2=30+6=36
Answer:
130 times .32
Step-by-step explanation:
Answer:
5x + 6y = -14
Step-by-step explanation:
Standard form means the x term will be on the farthest left, then the y term next, set equal to the constant (plain number) all by itself on the right.
Like this:
Ax + By = C
So you have
-5x - 14 = 6y
Add 14 to both sides.
-5x = 6y + 14
Subtract 6y from both sides.
-5x - 6y = 14
Also multiply both sides by -1, to make sure your A value (number next to the x) is positive.
5x + 6y = -14
The answer is 9:16 just add 9+7=16 and then we know out of the 16 nine were dogs so 9:16
AB = 30 in and BC = 50 in.
We use Pythagorean theorem to solve this. Since AN is an altitude, this means that it is perpendicular to BC. This means BN and AN are the legs of one right triangle, with AB being the hypotenuse:
18²+24² = AB²
324 + 576 = AB²
900 = AB²
Take the square root of both sides:
√900 = √AB²
30 = AB
NC and AN form the legs of the other right triangle, with AC being the hypotenuse:
24²+NC² = 40²
576 + NC² = 1600
Subtract 576 from both sides:
576 + NC² - 576 = 1600 - 576
NC² = 1024
Take the square root of both sides:
√NC² = √1024
NC = 32
BC = BN + NC = 18 + 32 = 50
