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Annette [7]
3 years ago
8

Solve for X in the proportion below

Mathematics
2 answers:
In-s [12.5K]3 years ago
7 0

Answer:

x=2

Step-by-step explanation:

40*x=16(2x+1)   (we cross multiply)

40x=32x+16

8x=16

x=2

andrey2020 [161]3 years ago
6 0

Answer:

x = 2

Step-by-step explanation:

Solve for x by cross multiplying

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Last time, one out of every 4 students in our class was absent. This time, after Jen came back, only one out of every 5 students
VMariaS [17]

Answer: There are 20 students and 4 students are not here today.

Step-by-step explanation:

If the number of students = 4

Let the number of students be 'x'.

Fraction of students absent = \dfrac{x}{4}

If the number of students = 5

Fraction of students absent = \dfrac{x}{5}

And Jen came back,

So, the fraction of student absent is also written as

\dfrac{x}{4}-1

According to question, it becomes,

\dfrac{x}{5}=\dfrac{x}{4}-1\\\\\dfrac{x}{5}=\dfrac{x-4}{4}\\\\4x=5(x-4)\\\\4x=5x-20\\\\4x-5x=-20\\\\-x=-20\\\\x=20

Hence, there are 20 students in our school.

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3 0
3 years ago
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Answer:

30

Step-by-step explanation:

90+2x+x=180

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3 years ago
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a racing car starts fron rest .if it gains an acceleration of 5m/second square in 10 second ,calculate the final velocity.​
hjlf

Answer:

<em>The</em><em> </em><em>final</em><em> </em><em>velocity</em><em> </em><em>would</em><em> </em><em>be</em><em> </em><em>5</em><em>0</em><em> </em><em>m</em><em>/</em><em>s</em><em>.</em>

<em>Its</em><em> </em><em>by</em><em> </em><em>formula</em><em>,</em><em> </em>

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<em><u>hope</u></em><em><u> </u></em><em><u>it</u></em><em><u> </u></em><em><u>helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

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3 years ago
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sattari [20]

Answer:

No

Step-by-step explanation:

7x2=14, 14+2=16, 16 is not 0.

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