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densk [106]
3 years ago
7

The sum of Pete's and Sam's ages is 30. Five years ago, Pete was 3 times as old as Sam. How old is Sam? Let P = Pete's age, S =

Sam's age, and P + S = 30. Which of the following equations would complete the system?
Mathematics
1 answer:
g100num [7]3 years ago
7 0
The equations are:

1. P + S = 30
2. 3(S-5) = P-5
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Triangle ABC has vertices with Alx, 3).
densk [106]

Answer:

x = 3

This triangle ABC will be a right triangle as its sides obey the Pythagoras theorem.

Step-by-step explanation:

Let us assume that the triangle Δ ABC has vertices A(x,3), B(-3,-1) and C(-1,-4) and it is a right triangle.  

We have to determine x.

Applying the Pythagoras Theorem,

AB² + BC² = AC² {If AC is the hypotenuse of the right triangle}

⇒ [(x + 3)² + 4²] + [(- 2)² + 3²} = (x + 1)² + 7²

⇒ x² + 6x + 38 = x² + 2x + 50

⇒ 4x = 12

⇒ x = 3 (Answer)

This triangle ABC will be a right triangle as its sides obey the Pythagoras theorem. (Answer)

5 0
3 years ago
Complete the proofs using the most appropriate method. may require CPCTC.
n200080 [17]

For the first one, you did good. I will just suggest a couple things.

Statement              Reason

JK ≅ LM                   Given

<JKM ≅ < LMK        Given  (You did both of these steps so well done.)

MK ≅ MK              Reflexive Property (Your angle pair is congruent but isn't one of the interior angle of the triangles you are trying to prove.)

ΔJMK ≅ ΔLKM        SAS

Problem 2: (You also have a lot of great stuff here.)

Statement          Reason

DE ║ FG              Given

DE ≅ FG              Given

<DEF≅<FGH       Given

<EDF≅<GFH       Corresponding Angles (You don't need to know that F is the midpoint but you got corresponding angle pair which is correct.)

ΔEDF≅ΔGFH        ASA

<DFE≅<FHG       CPCTC  

3 0
3 years ago
I need ASAP!! <br> Find CU. If necessary, round answers to 4 decimal places
MA_775_DIABLO [31]

Answer:

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Step-by-step explanation:

In order to calculate for x, we must create the necessary ratios

\frac{16}{20} = \frac{45-5x}{5x}

Cross multiply to get

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5 0
3 years ago
D, h, and p are coplanar ?
Allushta [10]

Answer:

Yes

Step-by-step explanation:

But if you stuck a pencil through the center of the picture the line that it makes would not be coplanar.

6 0
3 years ago
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Which graph shows the solution to this system of inequalities x-3y&gt;3 2x-y&lt;4
butalik [34]

Answer:

Step-by-step explanation:

would be graph x

3 0
3 years ago
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