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weeeeeb [17]
2 years ago
5

Evaluate the expression when a = -15 and B = - 5 and B +14/a =

Mathematics
1 answer:
Vinvika [58]2 years ago
5 0

Answer: \frac{3}{-5}

Step-by-step explanation:

All you do is plug in the number for each variable.

\frac{b+14}{a}=\frac{-5+14}{-15}=\frac{9}{-15}=\frac{3}{-5}

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Tony needs to create a platform shaped like the diagram with the labeled dimensions.
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<h2>135 cubic feet of concrete are required to create the platform.</h2>

Step-by-step explanation:

The dimension of lower step is 6 ft× 3 ft× 1.5 ft

and the dimension of upper step is 6 ft ×(9-3)ft × (1.5+1.5)ft = 6 ft × 6 ft ×3 ft

Therefore concrete are required to make lower step = (6×3×1.5) cubic feet

                                                                                       = 27 cubic feet

and concrete are required to make upper step = (6×6×3) cubic feet

                                                                               =108 cubic feet

<h3>∴(108+27) cubic feet = 135 cubic feet of concrete are required.</h3>

8 0
3 years ago
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Part B The mass of an average grain of rock salt is about 40 times the mass of an average grain of table salt. If you multiply t
yawa3891 [41]

Answer:

0.012

Step-by-step explanation:

We know the standard notation of table salt is 0.003, so we simply multiply 40 by this.

answer - 0.0003 X 40 = 0.012

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2 years ago
Write an equation is slope-intercept form for the line that passes through the given point and is perpendicular to the graph of
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3 years ago
Item 14<br> Find the missing dimension. Use the scale factor 1 : 12.
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Answer:

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Step-by-step explanation:

If the scale for this Water tower is 1 : 12 then this means that for every 1cm of the model, the actual water tower has 12cm. Therefore, in order to find the actual depth of the water tower we first need to multiply the depth of the model by 12.

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2 years ago
Cards are selected from a standard deck of 52, the results are recorded in the table. what is the empirical probability of not s
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The table have the following results:

 

Hearts – 7

Diamonds – 4

Clubs – 8

Spades – 5

There is a total of 24

 

The question is asking for the probability of not selecting a heart.

So we need to add the probabilities of the diamonds, clubs, and spades since these suits are different from hearts.

So = 4 + 8 + 5 = 17

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