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MrMuchimi
4 years ago
11

Is (4, 5) a solution to 2y – 3x = -7?

Mathematics
1 answer:
Fed [463]4 years ago
5 0

Answer: no

because when (4;5) is a solution to 2y - 3x = -7

=> 2y - 3x = -7 passes through (4;5)

but when x = 4; y = 5 => 2.5 - 3.4 = -2 (unreasonable)

=> (4;5) isnt a solution

Step-by-step explanation:

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Use the properties of operations to determine if the expressions are equivalent 6X -8;2(3x-5)
kupik [55]

6x-8

2(3x-5) use the distributive property to get 6x-10


6x-10 is not the same as 6x-8 so the two equations are not equivalent.


4 0
2 years ago
The graph shows the cost of gasoline at a gas station. Find the cost in dollars per gallon
lbvjy [14]

Answer:

7/2 or 3.5

Step-by-step explanation:

The y-axis represents the cost is dollars. The x-axis is the amount of gasoline in gallons. To find the cost in dollars per gallon, choose a point on the graph, and divide the dollars (y-coordinate) by the gallons (x-coordinate).

cost = (21/4) / (3/2)

cost = 21/4 * 2/3

cost = 42/12

cost = 7/2 = 3.5

4 0
3 years ago
PLEASE HELP!! The price of a pair of headphones is $39.99 before tax. Dalton bought the headphones for 30% off. He then paid 6%
Klio2033 [76]

Answer:

Step-by-step explanation:

A)

This is the 30% discount:

$39.99 x .30 = $11.997; The discount is $11.997

Price of headphones after the discount:

$39.99 - $11.997 = $27.99

Now we need to calculate the 6% sales tax on the discounted price.

$27.99 x .06 = $1.68 (rounded off)

Dalton paid $1.68 in sales tax on the discounted price.

B)

The total price Dalton paid for the headphones will be the discounted price plus the sales tax.

$27.99 + $1.68 = $29.67

Total price Dalton paid: $29.67

8 0
2 years ago
The slope of the line containing the points (-5, 3) and (-2, 1) is
lianna [129]

Answer:

A.-2/3

Step-by-step explanation:

formula of gradient

dy/dx=y2-y2/x2-x1

1-3/-2-(-5)

=-2/3.

5 0
3 years ago
How can this quadrilateral be classified? Select from the drop-down menus to complete the statements. This quadrilateral has Cho
Ilia_Sergeevich [38]

Yes, it can since it is parallel.

7 0
3 years ago
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