Answer:
No, It is not true
Step-by-step explanation:
First of all, we should have a number in the tenths place, and we don't.
Also, in the hundredths place, we should have 9, not 4.
And finally, the answers should be 0.195, not 0.042.
Answer:
the answer is 12
Step-by-step explanation:
7x-2y-1. x=3. y=4
7×3-2×4-1
=21-8-1
=12
Answer: 0.1 liter
Step-by-step explanation:
From the question, we are informed that Brianna teacher gives her a container that has 0.25 liter of a liquid in it and she needs to use 0.4 of this liquid for the experiment.
The amount of liquid that Brianna will use will be:
= 0.4 × 0.25 liters
= 0.1 liter
1. x = -4 ; f(x) = -(-4) = 4
2. x = -3 ; f(x) = 2(-3) + 1 = -5
3. x = 0 ; f(x) = 2(0) + 1 = 1
4. x = 2 ; f(x) = 2 + 3 = 5
5. x = 5 ; f(x) = 5 + 3 = 8
Solution:
Given:
![2(10-a^2)+7a](https://tex.z-dn.net/?f=2%2810-a%5E2%29%2B7a)
when a = 4, substitute for a in the expression;
![\begin{gathered} 2(10-a^2)+7a=2(10-4^2)+7(4) \\ =2(10-16)+28 \\ =2(-6)+28 \\ =-12+28 \\ =16 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%202%2810-a%5E2%29%2B7a%3D2%2810-4%5E2%29%2B7%284%29%20%5C%5C%20%3D2%2810-16%29%2B28%20%5C%5C%20%3D2%28-6%29%2B28%20%5C%5C%20%3D-12%2B28%20%5C%5C%20%3D16%20%5Cend%7Bgathered%7D)
Therefore, if (a = 4), then
![2(10-a^2)+7a=16](https://tex.z-dn.net/?f=2%2810-a%5E2%29%2B7a%3D16)
Hence, the answer is 16.