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irinina [24]
2 years ago
6

Part A

Mathematics
1 answer:
aleksandrvk [35]2 years ago
5 0
Part a: 1,3,5,7

part b: i’m not sure
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PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!
elena-14-01-66 [18.8K]

Answer:

<h2>B) one solution</h2>

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>
  • linear equation
  • PEMDAS
<h3>tips and formulas:</h3>
  • \sf\text{a system of linear equation has only one solution if $\frac{a_1}{a_2}\neq \frac{b_1}{b_2}$}
<h3>given:</h3>
  • \begin{cases}2x - 4y =  - 1 \\ 8x - 11y =  - 19 \end{cases}
<h3>let's solve:</h3>

  1. \sf substitute \: the \: value \: of \: a \: b :  \\  \frac{2}{8}   \ne  \frac{ - 4}{ - 11}  \\

\text{$\therefore$ the system of linear equation has only one solution}

6 0
3 years ago
The radius of a cylindrical water tank is 5.5ft, and its height is 13ft. What is the volume of the tank?
svetlana [45]

Answer:

The volume of the tank is 1235ft³

Step-by-step explanation:

To calculate the volume of a cylinder we have to use the following formula:

v = volume

h = height = 13ft

π = 3.14

r = radius = 5.5ft

v = (π * r²) * h

we replace the unknowns with the values we know

v = (3.14 * (5.5ft)²) * 13ft

v = (3.14 * 30.25ft²) * 13ft

v = 94.985ft² * 13ft

v = 1234.805ft³

Round to the nearest whole number

v = 1234.805ft³ = v = 1235ft³

4 0
3 years ago
Sheila got 87% of the problem correct. Patrick got 91/100 correct. Who scored higher?
Zolol [24]

Answer:

Patrick scored higher

Step-by-step explanation:

Shelia percentage is 87%

Patrick percentage is 91%

3 0
3 years ago
Which of the following is the solution to the following solution of inequality x+2y&lt;4 3x-y&gt;2
mezya [45]
What are the possible answers?

5 0
3 years ago
An airplane is sighted at the same time by two
tiny-mole [99]

I got 2.2

Step-by-step explanation:

I probably did the math wrong but i did my best and i hope this helped even a little!

4 0
2 years ago
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