2 years ago

2a^2 + -1(2-a)+3b ; a = 5 , b = 0

Mathematics

2 answers:

Andreas93 [3]2 years ago

8 0

The answer is 53
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Maksim231197 [3]2 years ago

5 0

Answer:

Step-by-step explanation:

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tadah!

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cestrela7 [59]

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2 years ago

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natali 33 [55]

1) value of x =60

2) value of x = 3

Step-by-step explanation:

We need to use cross products to solve the proportions of x.

$1.\,\, \frac{3}{5}= \frac{x}{100}$

Solving:

$\frac{3}{5}= \frac{x}{100}\\Cross\,\,multiply\,\,:\\5x=3*100\\5x=300\\x=\frac{300}{5}\\x=60$

So, value of x =60

$2.\,\,\frac{x}{8}=\frac{7.5}{20}$

$\frac{x}{8}=\frac{7.5}{20} \\20x=7.5*8\\20x=60\\x=\frac{60}{20}\\ x=3$

So, value of x = 3

Keywords: Ratio and Proportions

Learn more about Ratio and Proportions at:

#learnwithBrainly

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2 years ago

This one is confusing (slope)

Komok [63]

The answer is positive 1/5. Here is a tip, when reading a graph read from left to right. If it is going up to the right it is positive. If it goes down going to the right it is negative. Also think rise/run. Count how many times it goes up(or down) then count how long the line goes.

5 0

2 years ago

2a^2 + -1(2-a)+3b ; a = 5 , b = 0￼

2a^2 + -1(2-a)+3b ; a = 5 , b = 0