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pav-90 [236]
2 years ago
15

Can someone help me?

Mathematics
1 answer:
kirill [66]2 years ago
5 0

Answer:

x = 2.8

Step-by-step explanation:

4.2 (1/3) = 1.4

2 (1.4) = 2.8

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Karin wants to use the distributive property to mentally find the value of 19 x 42+ 19x 58. Which expression can she use?
olasank [31]

Answer:

19(42 + 58)

Step-by-step explanation:

Assuming x = multiply, you are trying to solve the distributive property. Divide common factors from both terms (in this case 19).

~

7 0
3 years ago
Read 2 more answers
Michael reads 12 pages of a book in 18 minutes, 8 pages in 12 minutes,and 20 pages in 30 minutes. Is this a proportional relatio
maria [59]

Answer:

  • y = 2/3x

Step-by-step explanation:

<u>Reading rate is y pages per x minutes and proportional relationship formula is:</u>

  • y = kx

<u>The coefficient is:</u>

  • k = y/x

<u>Let's verify if the given numbers fit into the same relationship:</u>

  • 12/18 = 2/3
  • 8/12 = 2/3
  • 20/30 = 2/3

We confirm all same and it means k = 2/3

<u>Required equation is:</u>

  • y = 2/3x

This represents that Michael reads 2 pages per 3 minutes and for x minutes he reads 2/3x pages

7 0
2 years ago
Solve by elimination <br> X - 6y + 2z = 5<br> 2x-3y+z=4<br> 3x + 4y - z = -2
Vesnalui [34]

Answer:

x=1

y=-3

z=-7

Step-by-step explanation:

6 0
2 years ago
The equation of the line whose slope is -2 and y-intercept is (0,-8)
Artemon [7]

Answer:

y=-2x-8

Step-by-step explanation:

3 0
3 years ago
Simplify - root (9+y)^2 if y &lt;-10
nevsk [136]

Answer:

− √ ( 9 + y ) 2 > 1

Explanation:

− √ ( 9 + y ) 2 , where  y < − 10

Simplify the expression,

− √ ( 9 + y ) 2 = − ( 9 + y ) = − 9 − y

When  y < − 10 , − y > 10

Subtract  9  from both sides,

− 9 − y > 1  Hence,

− √ ( 9 + y ) 2 > 1

6 0
2 years ago
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