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tester [92]
3 years ago
11

Miranda and Luci went out to dinner. They each ordered the same sandwich and drink, and they left the same amount of tip. Howeve

r, Miranda got a desert for $2.95, and Luci did not get a desert. Miranda tipped 15%, and Luci tipped 20%. Write an equation that can be used to find the cost of the sandwich and drink. How much did the sandwich and drink cost?
Mathematics
1 answer:
dlinn [17]3 years ago
8 0
Use p for the price of the sandwich and drink. 
(p+ 2.95 x.15) + (p x .20)


(I JUST GUESSED. IM VERY DUMB, SO DO NOT TRUST THIS ANSWER.
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Find the first term of the arithmetic sequence in which a38= -5 and the common difference is -2.9
mestny [16]

Answer:

102.3

Step-by-step explanation:

a_38 = -5

difference d= -2.9

We use general formula

a_n = a_1 + (n-1)d

WE make the formula for a_38 th term

Plug in 38 for n

a_{38} = a_1 + (38-1)d

Now plug in -2.9 for d and -5 for a_38

-5 = a_1 + (38-1)(-2.9)

-5 = a_1 - 107.3

Now add 107.3 on both sides

102.3 = a_1

option A is correct



3 0
3 years ago
Read 2 more answers
The figure à shown on ancient coin which was once used in china.the coin is in the shape of a circle of radius 3cm with a square
lianna [129]

Answer:

(1) 2π - x² = 0 (2) x = 2.5 cm (3) perimeter = 10 cm

Step-by-step explanation:

(1)The area of the circular coin without the inner square removed is πr² where r = 3 cm is the radius of the coin. So, the area of the coin without the inner square removed is πr² = π(3 cm)² = 9π cm²

The area of the square of x sides removed from its center is x².

The area A of the each face of the coin is thus A = 9π - x²

Since the area of each face of the coin A = 7π cm²,

then

7π = 9π - x²

9π - 7π - x² = 0

2π - x² = 0

(2) Solve the equation 2π - x² = 0

2π - x² = 0

x² = 2π

x = ±√(2π)

x = ± 2.51 cm

Since x cannot be negative, we take the positive answer.

So, x = 2.51 cm

≅ 2.5 cm

(3) Find the perimeter of the square

The perimeter of the square, p is given by p = 4x

p = 4 × 2.51 cm

= 10.04 cm

≅ 10 cm

8 0
3 years ago
ABCD is a rectangle. The length of AC is 3x - 1. The length of BD is 2x + 5.
antoniya [11.8K]

Answer:

C.13

Step-by-step explanation:

3 0
3 years ago
What distance was used to define the astronomical unit (AU)
scoundrel [369]
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3 years ago
thhen isabella filled 3 more pages with 36 photos which she evenly divided between the pages. is the number of photos on one of
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Answer:

less

Step-by-step explanation:

36 divided by 3 is 0.08333333333

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