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USPshnik [31]
3 years ago
13

2/3b + 5 = 20 - b Solve for b

Mathematics
2 answers:
Otrada [13]3 years ago
5 0
Okay, so with these equations, you collect 'like terms.' like terms are basically grouping things that are the same together, so for example a+a-b+2b would be 2a+b.
with this equation you want to do the same.
2/3b + 5 = 20 - b
first, make all the numbers integers (whole numbers). we want to make 2/3b a whole number, so we multiply the whole equation by 3 to keep everything in proportion with each other, thus ending up with
2b + 15 = 60 - 3b
now we collect 'like terms.'
add 3b to both sides gives
5b + 15 = 60
subtract 15 from both sides
5b = 45
divide by 5 to leave the value of b
b = 9
ad-work [718]3 years ago
3 0

Answer: B = 9

Hope this helps!

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Raheem made 14 ounces of curry sauce which contained (among other things), 3.25 ounces of spices. He wants to make a larger batc
wolverine [178]

Answer:

19.5 ounces of spices

Step-by-step explanation:

Raheem made 14 ounces of curry sauce which contained (among other things), 3.25 ounces of spices. He wants to make a larger batch for a family dinner and decides he will need a total of 84 ounces of sauce altogether. How many ounces of spices will he need to complete his recipe?

The question above is calculated as:

14 ounces of sauce = 3.25 ounces of spices

84 ounces of sauce = x ounces of spices

Cross Multiply

14x = 84 × 3.25

x = 84 × 3.25/14

x = 19.5 ounces of spices

Hence, for 84 ounces of curry sauce he would need 19.5 ounces of spices

6 0
3 years ago
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kotykmax [81]
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7. a

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3 0
3 years ago
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Which of the following word problems can be solved using the equation 12 ÷ 4 = a?
Sever21 [200]

Answer:

A.

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# 6
zhuklara [117]

9514 1404 393

Answer:

  y = 5x - 7

Step-by-step explanation:

We can make an equation for the perpendicular line by swapping the x- and y-coefficients, negating one of them. Then we can use that form with the given point to see what the constant is.

  10x -2y = ...

Removing a common factor of 2 gives ...

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Solving for y, we get ...

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3 years ago
To estimate the average annual expenses of students on books and class materials a sample of size 36 is taken. the sample mean i
Rzqust [24]
The 99 percent confidence interval for the population mean is found from:
\bar{x}-2.576\frac{s}{ \sqrt{n} }\ \textless \ \mu\ \textless \ \bar{x}+2.576\frac{s}{ \sqrt{n} }
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