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Softa [21]
3 years ago
6

Solve for b −3b+2.5=4 Two step equations with fractions and decimals

Mathematics
2 answers:
jenyasd209 [6]3 years ago
4 0
-3b+2,5=4
-3b=4-2.5
-3b=1.5
b=1.5/(-3)
b= -0.5

DIA [1.3K]3 years ago
3 0
−3b+2.5=4

Subtract 2.5 from both sides.

−3b+2.5−2.5=4−2.5

−3b=1.5

Divide both sides by -3.

−3b/−3 = 1.5/−3

b=−0.5

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inessss [21]

Answer:

Option D (7).

Step-by-step explanation:

The formula for gradient of the straight line is given by:

m = (y2 - y1)/(x2 - x1); where (x1, y1) and (x2, y2) are two fixed points on the straight line. It is given that (x1, y1) = (4, r) and (x2, y2) = (r, 2). The gradient of the straight line is given by -5/3. To find the value of r, simply substitute all the values in the gradient equation. Therefore:

-5/3 = (2 - r)/(r - 4).

Cross Multiplying:

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4 0
3 years ago
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Dmitriy789 [7]
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8 0
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Step-by-step explanation:

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4 years ago
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Answer:

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