Answer:
42
Step-by-step explanation:
j(5+k) + 15
Let j = 3 and k = 4
3(5+4) + 15
Parentheses first
3 (9) +15
Multiply
27 + 15
Add
42
Answer:
399
Step-by-step explanation:
To find the population in a future year, use the formula:
where A is the amount, p is the starting population, r is 5% or 0.05, and t is the number of years.
Since the population is increasing it is addition. Here we are finding A. Substitute P =380, r=0.05 and t=1.
Answer:
-55
Step-by-step explanation:
7x-6y=2
-2x-y=3
by substitution method
y=3+2x
7x-6(3+2x)=2
7x-18-12x=2
-5x=20
x=-4
-2(-4)-y=3
8-y=3
-y=3-8
y=5
therefore the value of x=4 and that of y=5
5x-7y=5(-4)-7(5)
=-20-35
=-55
Answer:
420$
Step-by-step explanation:
3.5% of 800 is 28. 28x15= 420
hope this helped :)
d)
y = mx + c
m = slope
c = y-intercept
slope = 8
e)
y-intercept = (0, 250,000)
f)
This is a line running bottom-left to top-right with a slope of 8. To draw the graph, you need to connect two coordinates.
y-intercept = (0, 250,000)
0 = 8x + 250,000
x = - 31,250
x-intercept = (- 31,250, 0)
Draw the axes and label them x and y.
