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fgiga [73]
3 years ago
12

Factor completely 169x2 _ 64

Mathematics
1 answer:
makvit [3.9K]3 years ago
6 0
A^2 - b^2 = (a - b)(a + b)
169x^2 - 64 = (13x - 8)(13x + 8)
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If 4 quarts of organic grapes cost $20 how many quarts can you purchase for one dollar
Eva8 [605]

Answer:

4/5 of a quart

Step-by-step explanation:

Set this up as a proportion. First of all we know that 4 quarts of organic grapes cost $20, so 4x = 20. Divide and you get that x = 5 meaning 1 quart equals 5 dollars. Now if we scale this down a bit and divide by 5, we end up with 4/5 of a quart = 1$.

Hope this helped (:

3 0
3 years ago
Pls help me this is for my final text and I’m struggling really bad!!!
vodka [1.7K]
I’m not so sure I fully understand the question. But I would say the rate is 1.

I say this because the line on your graph is a y=mx+b equation.

For every unit it moves over on the X axis it moves the same unit on the Y axis.

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5 0
3 years ago
Two 6-sided dice are rolled. What is the probability that the sum of the two numbers of the dice will be less than 6?
Elena-2011 [213]

Answer:

I believe it would just be 5/6.

Step-by-step explanation:

In a six-sided dice, there are five numbers less than 6!

6 0
3 years ago
Read 2 more answers
You and your friend each collect rocks and fossils. Your friend collects three times as many rocks and half as many fossils as y
tino4ka555 [31]

Answer:

Number of rocks and fossils collected by you is 1 and  24 respectively

Number of rocks and fossils collected by your friend is 3 and 12 respectively

Step-by-step explanation:

Let  the number of Rocks you collect be x

Let  the number of Fossils you collect be y

Then the total number pf objects you collected will be

x + y = 25

x = 25 - y------------------------------(1)

Your friend collects three times as many rocks and half as many fossils as you.

This can be written as

3x + y(\frac{1}{2}) = 15

3x + (\frac{y}{2}) = 15-------------------(2)

Substituting (1) in (2)

3(25 -y) + (\frac{y}{2}) = 15

75 - 3y + (\frac{y}{2}) = 15

Grouping the like terms we get,

75 - 15 = 3y - (\frac{y}{2})

60= \frac{6y-y}{2})

60 \times 2= 6y-y

120= 5y

y = \frac{120}{5}

y= 24

Substituting  y value in equation(1) we get

x = 25 - 24

x= 1

Friends collects 3 times rock

so collects 3x =3(1) = 3rocks

Also he collects half as many fossils

That is

\frac{y}{2} = \frac{24}{2} =12 fossils

4 0
4 years ago
Sara wanted to cover her art project with shiny purple paper. Her project is in the shape of a cube and the area of a face is 9
Liula [17]
It will cost $4.50...
6 0
3 years ago
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