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3 years ago

Which graph of ordered pairs shows a proportional relationship?

Mathematics

2 answers:

Gre4nikov [31]3 years ago

4 0

Answer:

(1, negative 2) and (2, negative 4)

Step-by-step explanation:

hope i am right

slava [35]3 years ago

3 0

Answer:

On a coordinate plane, points (1, negative 2) and (2, negative 4) are plotted

Step-by-step explanation:

In the choice shown above, y/x has the same ratio for both points. That is the hallmark of a proportional relationship.

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Explain how an estimate helps you place the decimal point when multiplying 3.9 × 5.3

Elza [17]

So you can round 3.9 to 4, and 5.3 to 5. so 4x5=20. there would then be 2 digits in front of the decimal point. (:

5 0

3 years ago

Sam saved 135$ in June . She only planned to save 75$ that month. What decimal represents the fraction of the amount of money Ti

melamori03 [73]

Answer: 1.8

Step-by-step explanation:

Amount saved= $135

Amount planned to save= $75

Fraction= 135/75 = 9/5

Decimal= 1.8

3 0

3 years ago

Write 6,020,300 in expanded form.

dangina [55]

Answer:

Step-by-step explanatio

6,000,000 + 20,000 + 300

4 0

3 years ago

In a company, 85% of the workers are men. If 825 women work for the company, how many workers are there in total?

tatyana61 [14]

Answer:

3300 workers

Step-by-step explanation:

25% is 825

So, 1% is 825/25

= 33

So, 100% is {(825/25)*100}

=3300 workers

5 0

3 years ago

Help help help guys show you solution

Mars2501 [29]

Answer:

Step-by-step explanation:

1) y = 2x ----------(I)

x + y = 6 -----------(II)

Plug in y =2x in equation (II)

x + 2x = 6 {Add like terms}

3x = 6

x = 6/3

x = 2

Plugin x = 2 in (I)

y = 2*2

y = 4

Check:

LHS = x +y

= 2 + 4

= 6 = RHS

2)5x + 10y = 3 ------------(I)

x = (-1/2) y ------------(II)

Substitute x = (-1/2)y in (I)

$5*\frac{-1}{2}y + 10y = 3\\\\\frac{-5}{2}y+ \frac{10*2}{1*2}y = 3\\\\\frac{-5}{2}y+\frac{20}{2}y=3\\\\\frac{-5+20}{2}y = 3\\\\\frac{15}{2}y=3\\\\ y = 3*\frac{2}{15}\\\\ y = \frac{2}{5}$

Substitute y = (2/5) in equation (II)

$x = \frac{-1}{2}*\frac{2}{5}\\\\x = \frac{-1}{5}$

Check:

Substitute x and y value in equation (I)

$LHS = 5*\frac{-1}{5}+10*\frac{2}{5}\\\\ = -1 + 2*2\\\\ = -1 + 4\\ = 3 = RHS$

3) y - x = 3x + 2

y = 3x + 2 + x

y = 4x + 2 ---------------(I)

2x + 2y = 14 - y

2x + 2y +y = 14

2x + 3y = 14 ------------------(II)

Substitute y = 4x + 2 in equation (II)

2x + 3(4x +2) = 14

2x + 3*4x + 3*2 = 14

2x + 12x + 6 = 14

14x + 6 = 14

14x = 14 - 6

14x = 8

x = 8/14

x = 4/7

Substitute 'x' value in (I)

$y = 4*\frac{4}{7} +2\\\\y = \frac{16}{7}+2\\\\y= \frac{16}{7}+\frac{2*7}{1*7}\\\\y=\frac{16}{7}+\frac{14}{7}\\\\y=\frac{30}{7}$

Check:

 $LHS = 2x + 3y\\\\ = 2*\frac{4}{7}+3*\frac{30}{7}\\\\ = \frac{8}{7}+\frac{90}{7}\\\\=\frac{8+90}{7}\\\\=\frac{98}{7}\\\\=14 = RHS$ 

6 0

3 years ago