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Aneli [31]
2 years ago
12

Which line contains the point (1, -3)?

Mathematics
1 answer:
xz_007 [3.2K]2 years ago
4 0

Answer:

<h2>4x - y = 7</h2>

Step-by-step explanation:

Put the values of x = 1 and y = -3 to the equations of a line and check the equality:

1. 4x - y = 7

4(1) - (-3) = 4 + 3 = 7   CORRECT

2. 2x + 5y = 4

2(1) + 5(-3) = 2 - 15 = -13 ≠ 7

3. 7x - y = 15

7(1) - (-3) = 7 + 3 = 10 ≠ 15

4. x + 5y = 21

1 + 5(-3) = 1 - 15 = -14 ≠ 21

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Solve. verify that your result satisfies the question. x+4.6=5.7
jarptica [38.1K]

Answer:

x = 1.1

Step-by-step explanation:

x+4.6=5.7

-4.6 = -4.6

x=1.1

6 0
3 years ago
Read 2 more answers
Susan has 50% more books than Michael. Michael has 40 books. If Michael buys 8 more books, will Susan have more or less books th
ololo11 [35]

Answer:

Susan has more books than Michael.

Step-by-step explanation:

If Susan has 50% more books and Michael has 40 books, that means Susan has 1.5 times 40 = 60

40 + 8 = 48

60 is more than 48, so Susan has more books than Michael

7 0
2 years ago
At a local preschool, there is a ratio of 3 boys to every 4 girls. If there are 245 total preschoolers enrolled, then how many a
Reika [66]

Set up the equation by writing the number of students in the ratio as a fraction:

3/4= (245-x)/x Cross multiply:

3x= 4(245-x) Multiply on right:

3x= 980-4x Add 4x on both sides:

7x= 980 Divide both sides by 7:

x= 140 this is how many girls there are. And:

245-140= 105= boys

5 0
2 years ago
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Maddy and her cousin work during the summer for a landscaping company. Maddy's cousin has been working for the company longer, s
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8 0
3 years ago
Simplify -9(1-10n) - 2(3n+9)
agasfer [191]

Answer:

3 (28 n - 9)

Step-by-step explanation:

Simplify the following:

-9 (1 - 10 n) - 2 (3 n + 9)

-9 (1 - 10 n) = 90 n - 9:

90 n - 9 - 2 (3 n + 9)

-2 (3 n + 9) = -6 n - 18:

90 n + -6 n - 18 - 9

Grouping like terms, 90 n - 6 n - 18 - 9 = (90 n - 6 n) + (-9 - 18):

(90 n - 6 n) + (-9 - 18)

90 n - 6 n = 84 n:

84 n + (-9 - 18)

-9 - 18 = -27:

84 n + -27

Factor 3 out of 84 n - 27:

Answer: 3 (28 n - 9)

4 0
2 years ago
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