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Oliga [24]
2 years ago
8

What is 1(4x+7y)+2(5y-9x)​

Mathematics
1 answer:
patriot [66]2 years ago
3 0
1(4x+7y)+2(5y-9x)
=4x+7y+10y-18x
=-14x+17y

The solution is -14x+17y.
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⅔ parts of the earth surface is covered with water.
Nat2105 [25]

Answer:

i.) 66% of the earth is covered in water

ii.) 33% is continental

Step-by-step explanation:

4 0
2 years ago
PLZ help me!!!! I have no idea how to do this!
sp2606 [1]

Answer:

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Step-by-step explanation:

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7 0
3 years ago
Read 2 more answers
​ BRAINLIEST!!!!!!!
Murrr4er [49]
All the angles inside a quadrilateral add to 360 degrees.
But first, we should solve for x
Opposite angles add up to 180 degrees.
So we'll use angles B and D
x + 10 + x + 24 = 180
combine like terms
2x + 34 = 180
subtract 34 from both sides
2x = 146
divide both sides by 2
x = 73

Now let's solve for the angles
Angle D: x + 24 = 97
Angle B: x + 10 = 83
Angle A: x + 15 = 88

Opposite angles add up to 180
we know that angle A is 88
C + 88 = 180
subtract 88 from both sides
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Hope this helps!
4 0
3 years ago
Will give brainliest to correct answer! Given that cos Ф=-8/17 and sin Ф is negative, determine the value of tan Ф.
Kipish [7]

Answer: option 3 is the correct answer

Step-by-step explanation:

Let us look at the various trigonometric ratios

Sin Ф = opposite side/ hypotenuse

Cos Ф = adjacent side / hypotenuse

Tan Ф = opposite side / adjacent side

Therefore, tan Ф = sin Ф / cos Ф

This means that if cos Ф=-8/17 and sin Ф is negative, then the hypotenuse is negative

To determine the adjacent side, we will apply Pythagoras theorem

Hypotenuse ^2 = opposite ^2 + adjacent ^2

-17^2 = 8^2 + adjacent^2

adjacent^2 = 289 - 64 = 225

adjacent = √225 = 15

tan Ф = 8/15

5 0
3 years ago
A total that is divided into equal groups is called the
brilliants [131]

<em>Greetings!</em>

In division, the number being divided is considered the dividend, and the number dividing is called the<em> divisor</em>. The answer is the <em>quotient</em>.

<em>A total that is divided into equal groups is called the </em><u><em>dividend</em></u><em>.</em>

Hope this helps!

8 0
3 years ago
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