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GaryK [48]
3 years ago
7

....................................e..................................

Mathematics
2 answers:
Ierofanga [76]3 years ago
8 0

.........................................e...................................................

lina2011 [118]3 years ago
5 0

Answer:

what?

Step-by-step explanation:

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Factorise the equation 9x^2 - 4
Wittaler [7]

Answer:

Step-by-step explanation:

a² - b² = (a +b)(a - b)

9x² - 4 = (3x)² - 2²

            = (3x + 2 )(3x - 2)

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3 years ago
I want a expert or someone that can tell me this %100 I’m offering a brainalist + 20 points
Fed [463]

Answer:

The answer is A

Step-by-step explanation:

Supplementary angles are angles which add up to 180°

∠1 and ∠3 add up to 180°, so they are supplementary.

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3 years ago
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What weight of dry substance is in 150g of a 3% substance solution? What weight of an 8% solution can we have with the same weig
Pavlova-9 [17]
The answers are: 4.5 g and 56.25 g respectively.

Since the first type of measurement in this question is weight or mass, I'll suppose that the percentage concentration is % mass/mass. For that type of concentration measurement, just multiply the percentage by the total mass to get the mass of the wanted material.
So 150 g * 3% = 150 g * 0.03 = 4.5g

For the 8% solution with the same amount of dry substance, use the ratio of percentages, multiplied by the mass of the first solution to get the wanted amount of new solution:
3/8 * 150 g = 56.35 g
5 0
3 years ago
The length of a rectangle is 5 times the width. If the perimeter is to be greater than 36 meters. What are the possible values f
Lostsunrise [7]

Answer:

  The width must be greater than 3 meters.

Step-by-step explanation:

Let w represent the width. Then 5w will represent the length, which is 5 times the width. The perimeter is the total of the side lengths of the rectangle, so is ...

  P = 2w + 2(5w) = 12w

We want this to be greater than 36 m, so ...

  P > 36 m

  12w > 36 m . . . . . . . substitute our expression for P

  w > 3 m . . . . . . . . . . divide by 12

The possible values for width are those values that are more than 3 meters.

3 0
3 years ago
Kevin calculated the product of 3.2 x 104 and 3.6 x 102 as 11.52 x 106. Which is the next step that Kevin should app
garri49 [273]

Answer:

the correct answer is C

Step-by-step explanation:

i was just on the question and the correct answer was C. or

Write in scientific notation, moving the decimal in the coefficient one place to the left, which adds 1 to the exponent value.

7 0
3 years ago
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