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lys-0071 [83]
3 years ago
15

X and Y

Mathematics
1 answer:
Sholpan [36]3 years ago
4 0

Step-by-step explanation:

just substitute X and Y by their numerical values.

a) -5(4)+5(-1)=-25

-20-5= -25

-25= -25. true

b) 3(4)+2(-1) = 10

12 -2 =10

10=10. true

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I need help for this also​
lubasha [3.4K]

Answer:

  a) h = 6 2/17

  b) k = 3 8/17

Step-by-step explanation:

We can make a list of corresponding sides:

  AB (17 cm) and DE (13 cm)

  BC (15 cm) and EC (8+k cm)

  CA (8 cm) and CD (h cm)

Because the triangles are similar, we know corresponding sides are proportional.

<h3>a)</h3>

  CD/CA = DE/AB

  h/8 = 13/17

  h = 8(13/17) = 6 2/17

__

<h3>b)</h3>

  EC/BC = DE/AB

  (8+k)/15 = 13/17

  8 +k = 15(13/17)

  k = 11 8/17 -8 = 3 8/17

5 0
2 years ago
Help!
ss7ja [257]

Answer:

1. yes this is proportional

2. your table should include the following numbers

1 = 34

2 = 46

3 = 58

4 = 70

3. 12x + 22 = y

Step-by-step explanation:

5 0
2 years ago
Maria bought some apples. She gave 3 apples to her friends. Write an algebraic expression that shows how many apples Maria has l
zavuch27 [327]

Answer:

x-3

Step-by-step explanation:

x-3 x because we don't know the number of apples she has so you put a letter then -3 because 3 apples are given away

8 0
3 years ago
If you were asked to measure the success of a campaign to fight for human rights, what criteria would you use?
Alla [95]

Step-by-step explanation:

Many factors would be used to assess the effectiveness of a human rights campaign, including the following:

Social Influence. Direct Interpersonal Reach. Participant Observation. Reputation. Volume of Search & Interest. Website Traffic.

National Research.

8 0
2 years ago
Help please and thanks
Mariana [72]

Answer:

5 hundred thousand.

Step-by-step explanation:

5 0
3 years ago
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