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Dvinal [7]
3 years ago
8

URGENT!!!! The coleman family had their bill at a resturant reduced by $7.50 because of a special discount. They left a tip of $

8.90 which was 20% of the reduced amount. Using x to represent the original bill write an algebraic equation and solve it to find the cost of their bill before the discount. SHOW ALL WORK PLEASE.
Mathematics
1 answer:
Alborosie3 years ago
3 0
I believe it is right ($52.00) but this could be wrong sorry

$8.90×20%

$8.90÷.20=44.5

discounted price:$44.5

44.5+$7.50=$52.00

original price without discount:$52.00

hopefully this helped:)|:)|:)|

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Nataly_w [17]

Answer:

  1)  6 1/2

Step-by-step explanation:

Put 3 1/4 where "a" is and do the arithmetic.

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4 0
3 years ago
Help me with this please
Reika [66]

Answer:

$2,459.21

Step-by-step explanation:

(see attached for reference)

recall that the formula for compound interest is:

A = P [ 1 + (r/n)^ (nt) ]

where,

A = Final amount ( we are asked to find this)

P = principal amount = given as $2,340

r = Annual Interest Rate = given as 5% = 0.05

n = number of times compounded in a year = 4 (compounded quarterly)

t= time = 1 year

Substituting the values into the equation,

A = P [ 1 + (r/n)^ (nt) ]

A = 2,340 [ 1 + (0.05/4)^ (4·1) ]

A = $2,459.21

6 0
3 years ago
What is the slope of the tangent line to f(x)=-2+5 at x=4
Eddi Din [679]

Answer:

f'(4)=0

Step-by-step explanation:

6 0
2 years ago
Pi/6 is the reference angle for:<br><br> 3pi/6<br><br> 5pi/6<br><br> 13pi/6<br><br> 8pi/6
Elanso [62]

Answer:

\frac{5\pi}{6}, \frac{13\pi}{6}

Step by step

Remember, a reference angle is a positive acute angle that represents an angle θ of any measurement.

a)

\frac{3\pi}{6}=90^\circ, then its reference angle is \frac{\pi}{2}

b)

\frac{5\pi}{6}=150^ \circ is in the second cuadrant, then its reference angle is 180^ \circ -150^{\circ}=30^{\circ}=\frac{\pi}{6}

c)

\frac{13\pi}{6}=390^\circ=360^\circ+30^\circ, then it is in the first cuadrant and the reference angle is 30^\circ =\frac{\pi}{6}.

d)

\frac{8\pi}{6}=240^\circ and it is in the third cuadrant, then its reference angle is 240^\circ -180^\circ=60^\circ=\frac{\pi}{3}

5 0
3 years ago
The two Marked angles are congruent yes or no will mark brainest​
kompoz [17]

Answer:

true

Step-by-step explanation:

if the vertical lines are not parallel, then the corresponding angles are not congruent.

8x + 2 = 14x - 76

8x - 14x = -76 -2

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8(13) + 2 = 14(13) - 76

106 = 106---- equal

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3 0
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