Answer:
C) 25
Step-by-step explanation:
First, solve for the height (red dotted line) using the Pythagorean theorem 9²+b²=15²
81+b²=225
b²=225-81
b²=12
Then set up a ratio.
x/12=9/15
simplify
x/12=3/5
cross-multiply
3x=60
x=20
This gives us the base. Now we can solve for x using the Pythagorean theorem again.
20²+15²=x²
400+225=x²
625=x²
√x²=√625
x=25
Answer:
y=-2x-5
Step-by-step explanation:
slope (m)= -2, point (-4,3) put in y=mx+B
3 (y)= -2 [m](-4) + B
3=-2 (-4)+B. - multiple -2 and -4
3= 8 +B. - two negatives. multipled gives you a positive
3=8+B. - subtract 8
-8 -8
-5=b
y= -2x-5
Answer:
f(x)=19(2)^x
Standard form of exponential graph is f(x) = ab^x
Plugging in (0, 19), you get
19 = ab^0 -> 19 = a(1)
a=19
f(x)=19b^x
1216 = 19(b)^6
64=b^6
b=2
-> f(x) = 19(2)^x
To find the answer subtract 10 from both sides. x^2 = 19
Take the square root of both sides to get x = the square root of 19
Answer:
3500÷6= 583
Step-by-step explanation:
It is 3500, because 5, the tens can give 4, the hundred