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mr_godi [17]
3 years ago
7

Estimate a 20% tip on a dinner bill of $171.81 by first rounding the bill amount to the nearest ten dollars.

Mathematics
1 answer:
NARA [144]3 years ago
6 0
$34 is a proper 20% tip on a $171.81 dinner. Move the decimal point twice to the left, then multiply that twice.
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Please help fast.
podryga [215]

\huge{\underline{\boxed{\tt{Answer:}}}}

Let AB be a chord of the given circle with centre and radius 13 cm.

Then, OA = 13 cm and ab = 10 cm

From O, draw OL⊥ AB

We know that the perpendicular from the centre of a circle to a chord bisects the chord.

∴ AL = ½AB = (½ × 10)cm = 5 cm

From the right △OLA, we have

OA² = OL² + AL²

==> OL² = OA² – AL²

==> [(13)² – (5)²] cm² = 144cm²

==> OL = √144cm = 12 cm

Hence, the distance of the chord from the centre is 12 cm.

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8 0
3 years ago
How many lines of symmetry does the letter z have ?
JulijaS [17]

Answer:

The Z is has no lines of symmetry. The W and Y have one line of symmetry. The X has two lines of symmetry.

6 0
3 years ago
1) f(x) = - x2 + 4x - 10<br> Find f(5)
Natali5045456 [20]
Substitute the x with 5
-(5)2 + 4(5) - 10 = 0
3 0
2 years ago
Solve the equations in Parts A and B using inverse operations. Check your solutions. In your final answer, include all of your w
Ludmilka [50]
Part A:5=2x^2-x^2+13
5=x^2+13
0=x^2+13-5
0=x^2+8

Part B:5=2x^3-x^3+13
5=x^3+13
0=x^3+13-5
0=x^3+8
3 0
3 years ago
Read 2 more answers
Whats a function rule for -3,-7,-11,-15
nikklg [1K]

Answer:

Subtract 4

Step-by-step explanation:

-3 - 4 = -7

-7 - 4 = -11

-11 - 4 = -15

7 0
2 years ago
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