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3 years ago

HELP ME I MARK BRAIN THING

Mathematics

2 answers:

disa [49]3 years ago

7 0

Answer:

your answer will be B

Step-by-step explanation:

have a nice day/night !!!

Shtirlitz [24]3 years ago

3 0

Answer:

Step-by-step explanation:

it is joined so it is symmetrical

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What is the scale factor of ABC to A DEF?

vampirchik [111]

Answer:

Step-by-step explanation:

All sides of triangle EFD have x6 of BAC.

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3 years ago

2. Which of the following is an equation? <br> A. y/9 - 3<br> B. 9 - 2<br> C. y/9 = 3<br> D. 7 + y

andrew11 [14]

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3 years ago

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3 years ago

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Help me on the first question

Tresset [83]

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3 years ago

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4 students is what percentage of 20 students?2 doctors is _____% of 25 doctors.

Ray Of Light [21]

In both cases, we can use a rule of three.

<h2>First part</h2> $\begin{gathered} 20\text{ students}\rightarrow100\text{\%} \\ 4\text{ students}\rightarrow x \\ x=\frac{4\text{ students}\cdot100\text{\%}}{20\text{ students}} \\ x=\frac{4\cdot100\text{\%}}{20} \\ x=\frac{400\text{\%}}{20} \\ x=20\text{\%} \end{gathered}$

Therefore, 4 students correspond to 20% of 20 students in total.

<h2>Second part</h2> $\begin{gathered} 25\text{ doctors}\rightarrow100\text{\%} \\ 2\text{ doctors}\rightarrow x \\ x=\frac{2\text{ doctors}\cdot100\text{\%}}{25\text{ doctors}} \\ x=\frac{2\cdot100\text{\%}}{25} \\ x=\frac{200\text{\%}}{25} \\ x=8\text{\%} \end{gathered}$

Therefore, 2 doctors correspond to 8% of 25 doctors in total.

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1 year ago