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3 years ago

Serea makes 6.40 an hour,she works 8 hours a day,how much does she earn for those 8 hours

Mathematics

2 answers:

Wewaii [24]3 years ago

6 0

Answer:

$51.2

Step-by-step explanation:

She makes 6.40 an hour so to find how much she makes for 8 hours you do 6.40×8

Romashka [77]3 years ago

6 0

Equation: y= 6.40x
y is how much she will make
6.40 is how much she is making
x is how many hours she works
y= 6.40 (8)
y= 6.40•8
y= $51.20
Serea made $51.20

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3 years ago

Read 2 more answers

Find the coordinates of the point three tenths<br><br> of the way from A(-4, -8) to B(11, 7)

Leviafan [203]

let's first off take a peek at those values.

let's say the point with those coordinates is point C, so C is 3/10 of the way from A to B.

meaning, we take the segment AB and cut it in 10 equal pieces, AC takes 3 pieces, and CB takes 7 pieces, namely AC and CB are at a 3:7 ratio.

$\bf ~~~~~~~~~~~~\textit{internal division of a line segment}
\\\\\\
A(-4,-8)\qquad B(11,7)\qquad
\qquad \stackrel{\textit{ratio from A to B}}{3:7}
\\\\\\
\cfrac{A\underline{C}}{\underline{C} B} = \cfrac{3}{7}\implies \cfrac{A}{B} = \cfrac{3}{7}\implies 7A=3B\implies 7(-4,-8)=3(11,7)\\\\[-0.35em]
~\dotfill\\\\
C=\left(\frac{\textit{sum of "x" values}}{\textit{sum of ratios}}\quad ,\quad \frac{\textit{sum of "y" values}}{\textit{sum of ratios}}\right)\\\\[-0.35em]
~\dotfill$

$\bf C=\left(\cfrac{(7\cdot -4)+(3\cdot 11)}{3+7}\quad ,\quad \cfrac{(7\cdot -8)+(3\cdot 7)}{3+7}\right)
\\\\\\
C=\left( \cfrac{-28+33}{10}~~,~~\cfrac{-56+21}{10} \right)\implies C=\left( \cfrac{5}{10}~~,~~\cfrac{-35}{10} \right)
\\\\[-0.35em]
\rule{34em}{0.25pt}\\\\
~\hfill C=\left( \frac{1}{2}~,~-\frac{7}{2} \right)~\hfill$

4 0

3 years ago

Y and x vary directly. If the constant of variation is 1/2, then what is the value of y when x= -6

san4es73 [151]

If x=-6, then y=-3

Further explanation:

Direct proportion means that if a quanitity increases the other quantity also increases and vice versa

The direct proportion is written as:

If y and x vary directly then

y∝x

y=kx

where k is the proportionality constant

If k=1/2 then the expression will be:

$y=\frac{1}{2}x\\Putting\ x=-6\\y=\frac{1}{2}* (-6)\\y=-3$

If x=-6, then y=-3

Keywords: Proportion, Constant

Learn more about proportion at:

#LearnwithBrainly

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4 years ago