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prisoha [69]
3 years ago
7

Use substitution to solve this system of equations: 5x+y=10, y=x+4.

Mathematics
1 answer:
GalinKa [24]3 years ago
4 0

Answer:

Step-by-step explanation:

5x + x + 4 = 10

6x + 4 = 10

6x = 6

x = 1

y = 1 + 4

y = 5

(1, 5)

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A triangle has measurements of 39, 52, and 65 units. Is it a right triangle?
Ivanshal [37]
Hi!

We can use the Pythagorean Theorem to see if it is a right triangle.

The Pythagorean Theorem is a² + b² = c².

c = the longest side, or the hypotenuse. In this case, the hypotenuse should be 65.
39 can be a, and 52 could be b, or 52 could be a, and 39 could be b. It doesn't matter. 

39² + 52² = 65²

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Mr. Smith has 5 acres of land for sale. He divided the land into 3-acre lots. How many lots are for sale?
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3 0
3 years ago
Express the confidence interval 0.319 < p < 0.488 in the form of p ± E.
KengaRu [80]

Answer:

0.4035+/-0.0845

Step-by-step explanation:

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p-E=0.319\\p+E=0.488

We simply add the two equations and solve for p;

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We then substitute this value of p in either equation and solve for E;

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Since we have both p and E, the confidence interval can thus be written as;

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8 0
3 years ago
I don’t know if I did this correctly. Please help !!!!!!! Will mark Brianliest !!!!!!!!!!!! URGENT !!!!!!!!!!!!!!!!
andrew11 [14]

Answer:

  • 6 units left and 4 up (if figure K translated)
  • 6 units right and 4 units down (if figure J translated)

Step-by-step explanation:

<em>It is not clear which of the figures is translated.</em>

<em>Assume it is figure K.</em>

Use one of the points and compare the corresponding point.

<u>If you take bottom-left point, then the difference is coordinates is:</u>

  • -7 - (-1) = -6, this is translation left by 6 units (or right if the figure J is translated)
  • 2 - (-2) = 4, this is translation up by 4 units (or down if the figure J is translated)

<u>So the answer is </u>

  • 6 units left and 4 up or, (figure K translated)
  • 6 units right and 4 units down (figure J translated)
5 0
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