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Nana76 [90]
4 years ago
13

Please help me, I need to divide this problem (-2/7)(5/-8)

Mathematics
1 answer:
JulijaS [17]4 years ago
8 0

Answer:

5/28 (Decimal: 0.178571)

Step-by-step explanation:

(−2/7) (5/−8)

= −2/7 (5/−8)

=−2/7 (−5/8)= 5/28

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To ________ a formula or equation for a specified variable means to rearrange it so that the variable appears alone on one side
nikitadnepr [17]
To solve a formula or equation for a <span>specified variable means to rearrange it so that the variable appears alone on one side of the equal.</span>
6 0
3 years ago
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Solve for b.<br><br> 3b − –4 = 10
mrs_skeptik [129]

Answer:

b=2

Step-by-step explanation:

hope this helps

7 0
3 years ago
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What's the answer to -7=c-6
son4ous [18]
Simple...

you have: -7=c-6

You want to isolate the variable c

-7=c-6
   
-7=c-6
+6   +6

-1=c

Thus, your answer.
6 0
3 years ago
Please tell me what the Point Slope Slope Intercept Standard is for these graphs
iVinArrow [24]

Answer:

<u>1st graph</u>:

Slope-intercept is y = -7/2x + 3

Point Slope is y + 4 = -7/2(x - 2)

Standard is 7x + 2y = 6

<u>2nd graph</u>:

Slope-intercept is y = 1/2x - 4

Point Slope is y + 2 = 1/2(x - 4)

Standard is x - 2y = 8

<u>3rd graph</u>:

Slope-intercept is y = 3x - 3

Point Slope is y - 3 = 3(x - 2)

Standard is 3x - y = 3

<u>4th graph</u>:

Slope-intercept is y = -2/7x - 4

Point Slope is y + 2 = -2/7(x + 7)

Standard is 2x + 7y = - 28

Step-by-step explanation:

Point Slope formula⤵⤵⤵:

y - y _{1} = m(x - x _{1})

Slope-intercept formula⤵⤵⤵:

y = mx + b

Standard formula⤵⤵⤵:

Ax + By = C

Sorry this took a while, I was doing other stuff for school. I also had to relearn point slope for this, so it took me some time to figure it out. Hope this helps though :)

5 0
3 years ago
Square root of the quantity x plus 7 end quantity minus 1 equals x
snow_lady [41]

Answer:

x = 2

Step-by-step explanation:

√(x + 7) − 1 = x

√(x + 7) = x + 1

x + 7 = (x + 1)²

x + 7 = x² + 2x + 1

0 = x² + x − 6

0 = (x + 3) (x − 2)

x = -3 or 2

Check for extraneous solutions:

√(-3 + 7) − 1 = -3

√4 − 1 = -3

2 − 1 = -3

1 = -3

x ≠ -3

√(2 + 7) − 1 = 2

√9 − 1 = 2

3 − 1 = 2

2 = 2

x = 2

8 0
3 years ago
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