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ELEN [110]
2 years ago
12

22

Mathematics
1 answer:
dalvyx [7]2 years ago
8 0

The first digit may be 1 or 8.

The second digit may be 1, 2, 4, 8.

The third digit may be 1, 3, 5, 7, 9.

There are 2\times4\times5=40\:variants

The probability that this is the correct code is \frac{1}{40}

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HI

Step-by-step explanation:

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4,055

Step-by-step explanation:

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To win a local billiards tournament, all Jeanette has left to do is drop the 9-ball. Because of the other balls on the table (no
alukav5142 [94]

Answer:

Here's what I get.

Step-by-step explanation:

Assume the diagram is like the one below.

Segments AB, BC, and CH are transversals to the sides of the pool table.

BC is also a transversal to AB and CH.

a. Angles we can be sure about

∠ABC — interior opposite angles of transversal BC

∠CBH — interior opposite angles of transversal BC

∠BHC — interior angles of triangle BHC

∠ABK — alternate exterior angles of transversal BC

∠CHG — complementary to ∠CGH

b. Sets of congruent angles

∠ABC ≅ ∠BCH = 66° — interior opposite angles of transversal BC

∠CBH ≅ ∠BCE = 57° — interior opposite angles of transversal BC

∠BHC ≅ ∠GCH = 57° — interior opposite angles of transversal CH

∠ABK ≅ ∠GCH = 57° — alternate exterior angles of transversal BC

One set of congruent angles is {∠ABC, ∠BCH}

Another set is {∠ABK, ∠BCE, ∠BHC, ∠CBH, ∠GCH}

c.  Alternate interior angles

Alternate interior angles are a pair of angles on the inner sides of the parallel lines but on opposite sides of the transversal.

The sets of alternate interior angles are {∠ABC, ∠BCH}, {∠ ABC, ∠BCD} {∠BCE,  ∠CBH}, {∠CHJ, ∠GCH}

d. Corresponding angles

Corresponding angles are a pair of angles on the same side of parallel lines and on the same side of the transversal.

The diagram has no corresponding angles.

7 0
3 years ago
Which line is perpendicular to the<br>line -x+ y=2?​
mr Goodwill [35]

Answer:

y=  -x+b

Step-by-step explanation:

hello :

the slope for the line : - x+y=2  is 1   because -x+y = 2 means  y= 1x+2

all lines perpendicular to the line -x+y=2   have equation : y = ax+b

when : a×(1) = -1   so : a=-1  

an equation is : y=  -x+b

look the graph for the line : -x+y=2 (color red) and some lines

perpendicular to this line

5 0
3 years ago
Read 2 more answers
Isabelle is collecting pledges for a walk-a-thon. Her mother has pledged a flat donation of $9, and her grandmother has pledged
Phantasy [73]
<h2>Key Concepts</h2>
  • Linear systems
  • Word problems

<h2>Solving the Question</h2>

In this case, we're given the following information:

  • Mother = $9
  • Grandmother = $1 per mile
  • Isabelle walks <em>x</em> miles, mother pledge = grandmother pledge

The mother's donation of $9 will not change <em>no matter how many miles Isabelle has walked</em>, so if both the mother's and grandmother's donations are equal, they must each owe 9$.

<h2>Answer</h2>

Each donor owes $9.

3 0
1 year ago
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