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lora16 [44]
3 years ago
13

Solve for a. 7a - 2b = 5a - b

Mathematics
2 answers:
a_sh-v [17]3 years ago
8 0
A = 1/2 b since you first try and get them each on ine side
Lilit [14]3 years ago
5 0
Hello, <span> <span> adrianaramirez7, </span> </span>Let's solve for a.<span><span><span>7a</span>−<span>2b</span></span>=<span><span>5a</span>−b</span></span>Step 1: Add -5a to both sides.<span><span><span><span>7a</span>−<span>2b</span></span>+<span>−<span>5a</span></span></span>=<span><span><span>5a</span>−b</span>+<span>−<span>5a</span></span></span></span><span><span><span>2a</span>−<span>2b</span></span>=<span>−b</span></span>Step 2: Add 2b to both sides.<span><span><span><span>2a</span>−<span>2b</span></span>+<span>2b</span></span>=<span><span>−b</span>+<span>2b</span></span></span><span><span>2a</span>=b</span>Step 3: Divide both sides by 2.<span><span><span>2a</span>/2</span>=<span>b/2</span></span><span>a=<span><span>12</span>b</span></span>Answer:<span>a=<span><span>1/2</span>b</span></span>

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Janelle graphed a line through (−6, 5) that had a slope of −79. What is the y-coordinate of a point on the line that has an x-co
jeyben [28]

Answer:

The value of the y-coordinate is -706

Step-by-step explanation:

The equation of a straight line is;

y = mx + c

where m is slope and c is t-intercept

Given the slope, we can write the equation as;

y = -79x + c

we need to get c

Just put in the x and y values of the given point

X = -6 and y = 5

5 = -79(-6) + c

5 = 474 + c

c = 5-474 = -469

So the complete equation of the line would

be ;

y = -79x - 469

To get the y-coordinate of the point, just insert the x value into the equation;

y = -79(3) - 469

y = -237 - 469 = -706

4 0
2 years ago
If A = 8! and B = 8P8, then which one of the following is true:
meriva

Answer:

A. A = B

Step-by-step explanation:

Given

A = 8!

B = ^8P_8

Required

Which of the options is true

We start by simplifying B = ^8P_8

Permutation is calculated as follows

^nP_r = \frac{n!}{(n - r)!}

So.

^8P_8 =\frac{8!}{(8 - 8)!}

^8P_8 =\frac{8!}{0!}

0! = 1; So

^8P_8 =\frac{8!}{1}

^8P_8 =8!

Hence. B! = P!

<em>This implies that </em>A = B = 8!<em />

4 0
2 years ago
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dexar [7]

Answer:

D

Step-by-step explanation:

I'm pretty sure it's D

6 0
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murzikaleks [220]
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storchak [24]

Answer:

the awnser is b

Step-by-step explanation:

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4 0
2 years ago
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