I'm assuming that you meant:
y = 7x² + 3
Remember! Inputs are always x values (unless stated otherwise). Meaning the problem says:
x = 4
y = 7(4)² + 3
The square only applies to the 4. The 7 is not going to be squared! (To be exact it only applies to whatever the value of x is.
4² = 4·4 = 16
Remember:
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction
Follow PEMDAS from left to right (or in the case above from top to bottom).
7·16 + 3 = ?
16·7 = 10·7 + 6·7 = 70 + 42 = 112
(All I did to multiply was break it up into parts. If it confuses you don't worry about it, and just multiply it out like normal or use a calculator if you are allowed to)
112 + 3 = ?
Our output is:
115!
Answer:
c,d,and e are true....hope you understand...
Answer:
5/21
Step-by-step explanation:
(29-8)*x=5
21x=5
x=5/21
Answer:
Carbon dioxide is a chemical compound composed of one carbon and two oxygen atoms. It is often referred to by its formula CO2. It is present in the Earth's atmosphere at a low concentration and acts as a greenhouse gas.
Step-by-step explanation:
There is also more to know about this. It's also a chemical.
The correct answer for the question that is being presented above is this one: "<span>D. 300 yd2."
</span>
We have to get the areas of 5 polygons and add them together to get the surface area.
Area 1 = l * w = 5*8 = 40
Area 2 = l * w = 12 * 8 = 96
Area 3 = l * w = 13 * 8 = 104
Area 4 = bh/2 = 5*12/2 =30
Area 5 = bh/2 = 5*12/2 = 30
Area = Area 1 + Area 2 + Area 3 + Area 4 + Area 5
Area = 40 + 96 + 104 + 30 + 30
Area = 300 yard^2
