Answer:
45
Step-by-step explanation: 10+7b (7b= 7x5=35)
10+35+ <u>45</u>
So,
Her average so far is the sum of the five scores divided by the number of tests she has taken so far.
(87 + 81 + 85 + 90 + 78)/5 = 84.2
(87 + 81 + 85 + 90 + 78)/5 < 85 :(
She will not get into that college if she doesn't increase her average on the last test.
85 - 84.2 = 0.8
0.8(5) = 4.0
On her last test, she needs to score 4 points higher than her current average in order to get into the college.
84.2 + 4 = 88.2
Jessica needs to score at least 88.2 on her last test.
Answer:
2500 kg/m³
Step-by-step explanation:
Density of a material is the ratio of mass and volume of that material.
The S.I unit for density is grams per centimeters cubed (g/cm³) or kilograms per meter cubed (kg/m³)
Given density as 2.5 g/cm³ , convert to kg/m³
Formula is;
1g/cm³ = 1000 kg/m³
2.5 g/cm³=? cross-multiply
=2.5×1000 = 2500 kg/m³
To find if a function even or odd, subsitutue x with -x or evaluate f(-x)
if it is even,then f(-x)=f(x)
if it is odd then f(-x)=-f(x)
if neither then neither
f(-x)=-2(-x)^3+3(-x)^2
f(-x)=-2(-1)(x^3)+3x^2
f(-x)=2x^3+3x
it is neither fully negative nor the same
neither even nor odd