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Leya [2.2K]
3 years ago
12

What is a negative control.

Mathematics
1 answer:
OLga [1]3 years ago
7 0

Answer:

Negative controls are particular samples included in the experiment that are treated the same as all the other samples but are not expected to change due to any variable in the experiment.

Step-by-step explanation:

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Solve equation -4a/5-8=2
makkiz [27]
Add 8 to both sides
-4a /5= 10
Multiply both sides by 5
-4a= 50
A= - 12.5
6 0
3 years ago
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14 x blank x blank =169 I need help with the blanks because 169 is the face area.
luda_lava [24]
Answer:

Volume of the rectangular prism = 2366 cubic inches

Explanations:

The volume of a prism = Base Area x Height

In this case, the base area is referred to as the face area

Base area = 169 square inches

Height = 14 inches

Volume of the prism = 169 x 14

Volume of the rectangular prism = 2366 cubic inches

8 0
1 year ago
Create an equivalent expression for 4t-18-t+2t+20
alexandr1967 [171]

Answer:

5t + 2

General Formulas and Concepts:

<u>Algebra I</u>

  • Combining Like Terms

Step-by-step explanation:

<u>Step 1: Define Expression</u>

4t - 18 - t + 2t + 20

<u>Step 2: Simplify</u>

  1. Combine like terms (t):                    5t - 18 + 20
  2. Combine like terms (Z):                   5t + 2
6 0
3 years ago
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What is the value of x? image below
prisoha [69]

Answer:

Angle x = 72

Step-by-step explanation:

Angle AHI = Angle HIK = 63

(This is because the two angles are corresponding angles, HI//JK)

Angle x = 180 - 63 - 45

             = 72

3 0
2 years ago
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Write your question here keep it simple and clear
igor_vitrenko [27]

。☆✼★ ━━━━━━━━━━━━━━  ☾  

12 + 12 + 18 + 18 = 60

The perimeter is 60 cm

Have A Nice Day ❤    

Stay Brainly! ヅ    

- Ally ✧    

。☆✼★ ━━━━━━━━━━━━━━  ☾

7 0
3 years ago
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