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3 years ago

15

Margaret is a waitress at The Seafood Bonanza. She earns $3 an hour plus 90% of her tips. Write an equation for her salary, S, i

f she works h hours and earns d dollars
in tips.

1 answer:

frosja888 [35]3 years ago

6 0

Answer: 3h + 0.9s

Step-by-step explanation:

90% is the same as 0.9 of..

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if trapezium of area 140 cm horsepower sides 10 cm apart and one of them decides is 16 cm longfind the area find the length of t

Vilka [71]

Given :

Area of the trapezium is 140 cm².
Its height is 10 cm.
One of the parallel side is 16 cm.

To Find :

The other parallel side.

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Let the other parallel side be x

We know that,

${ \qquad \: \pmb{ \dfrac{1}{2} \times (sum \: of \: the \: parallel \: sides) \times height} = \pmb{Area_{(trapezium)}}}$

Now, Substituting the given values in the formula :

$\qquad { \dashrightarrow \: { \sf{ \dfrac{1}{2} \times (16 + x)\: \times 10 \: = {140}}}}$

$\qquad { \dashrightarrow \: { \sf{ 5 \times (16 + x)\ \: = {140}}}}$

$\qquad { \dashrightarrow \: { \sf{ 80 + 5x = {140}}}}$

$\qquad { \dashrightarrow \: { \sf{ 5x = {140 - 80}}}}$

$\qquad { \dashrightarrow \: { \sf{ 5x = {60}}}}$

$\qquad { \dashrightarrow \: { \sf{ x = { \dfrac{60}{5} }}}}$

$\qquad { \dashrightarrow \: { \pmb{ x = { 12 }}}}$

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