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3 years ago

PLEASE ANSWER WITH SOLUTION PLS

Mathematics

2 answers:

katen-ka-za [31]3 years ago

7 0

Answer:

whatever% of anything, is just (whatever/100) * anything.

there were a total of 560000 votes, now, off those some are valid and some are invalid.

we know 15% of that are invalid, that simply means that 85% are valid, since 85% + 15% is the whole thing, or 100%, if 15% are not good, the other 85% are the good ones.

how many are the valid ones anyway? well, 85% of 560000, which is just (85/100) * 560000.

we know that off those valid ones, the candidate got 75% of those, so how much is 75% of that?

well, (75/100) * [ (85/100) * 560000 ].

Step-by-step explanation:

Hunter-Best [27]3 years ago

4 0

Answer:

See below ↓

Step-by-step explanation:

Score of the student on examination = marks scored / total marks
Score = 235/300 [Divide throughout by 5]
Score = 47/60 [Using long division, approximate to tenths place]
Score = 0.783 [Multiply with 100 to convert decimals → percentage]
Score = 78.3%

Total valid votes = 560 x (100 - 15)%
Total valid votes = 560 x 0.85
Total valid votes = 476
Votes for Magie N. Hawa = 476 x 70%
Votes for Magie N. Hawa = 333.2 ≅ 333 votes

108 girls = (100 - 70)% of pupils
108 / 0.3 = number of pupils
360 pupils

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Question:70% of x is 63. 1.Write an equation that shows the relationship of 70%, x, and 63. 2. Use your equation to find x. Show

a_sh-v [17]

"x" represents an unknown number, we know that 70% of x equals 63.

To calculate the percentage of a number you have to multiply the said number by the percentage, in this case, 70%, and divide the result by 100:

So the 70% of x can be calculated as:

$\frac{70\cdot x}{100}=63$

You can simplify this expression by solving the division

$\begin{gathered} \frac{70}{100}x=63 \\ \frac{7}{10}x=63 \\ 0.7x=63 \end{gathered}$

Then the expression that shows you the relationship is

$0.7x=63$

Using this expression you can determine the value of x, to do so you have to divide both sides of the equal sign by 0.7

$\begin{gathered} \frac{0.7x}{0.7}=\frac{63}{0.7} \\ x=90 \end{gathered}$

The value of x is 90

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1 year ago

HELP!!

True [87]

Yes is 12% good job hope this helps

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3 years ago

Y equals equation for the line that passes through the points (-6,2) and (1,16)

8_murik_8 [283]

Slope-intercept form: y = mx + b

[m is the slope, b is the y-intercept or the y value when x = 0 ---> (0, y) or the point where the line crosses through the y-axis]

To find the slope, you use the slope formula:

$m=\frac{y_2-y_1}{x_2-x_1}$ And plug in the two points

(-6, 2) = (x₁ , y₁)

(1, 16) = (x₂ , y₂)

$m=\frac{y_2-y_1}{x_2-x_1}$

$m=\frac{16-2}{1-(-6)}$ [two negatives cancel each other out and become positive]

$m=\frac{16-2}{1+6}$

$m=\frac{14}{7}$

m = 2 Now that you found m, plug it into the equation

y = mx + b

y = 2x + b To find b, plug in one of the points into the equation

(-6, 2)

y = 2x + b

2 = 2(-6) + b

2 = -12 + b Add 12 on both sides

14 = b

(1, 16)

y = 2x + b

16 = 2(1) + b Subtract 2 on both sides

14 = b

Now that you found b, plug it into the equation

y = 2x + 14

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3 years ago