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DanielleElmas [232]
3 years ago
6

andy is 5 kilogram less than twice his brother's. together they weigh 100 kilograms what are they weights

Mathematics
2 answers:
Minchanka [31]3 years ago
6 0
<span>Let x be the brother's weight.
Then 2x-5 is Andy's weight.
x+(2x-5)=100
3x-5=100
3x=105</span>
Ksivusya [100]3 years ago
3 0
Andy is 45 kilograms and his brother is 55 kilograms. 55+45=100
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Isosceles triangle has 2 sides that are the same length. So what you have is three sides that measure: x, x, and (x-8). 70 = x + x + (x-8).
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1/6

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Please Help <br> Write a system of linear Inequalities to represent each graph.
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Answer:

\left\{\begin{array}{l}5x-y-7\le 0\\2x+3y-9\ge 0\end{array}\right.

Step-by-step explanation:

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This line is solid, so the sign for the inequality should be with the notion "or equal to".

From the diagram you can see that the origin belongs to the blue region, then its coordinates satisfy the inequality. Thus,

5x-y-7\le 0.

2. Green region. The boundary green line passes through the points (6,-1) and (0,3), then its equation is

\dfrac{x-0}{6-0}=\dfrac{y-3}{-1-3},\\ \\-4x=6(y-3),\\ \\-2x=3y-9,\\ \\2x+3y-9=0.

This line is solid, so the sign for the inequality also should be with the notion "or equal to".

From the diagram you can see that the origin doesn't belong to the blue region, then its coordinates satisfy the inequality. Thus,

2x+3y-9\ge 0.

3. The system of linear inequalities that represents these graphs is

\left\{\begin{array}{l}5x-y-7\le 0\\2x+3y-9\ge 0\end{array}\right.

6 0
3 years ago
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harina [27]
The answer is D.. :)
7 0
2 years ago
Barbara was earning $8.70 per hour when she got a 6% increase in pay .what was the rate of pay after that increase ?
densk [106]
First we find the increase by multiplying the percentage with the base salary

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8.70+0.522=9.222$
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