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tamaranim1 [39]
3 years ago
7

Evaluate j/k-0.2k when j=25 and k=5

Mathematics
1 answer:
Kamila [148]3 years ago
6 0

Answer:

4

Step-by-step explanation:

\frac{j}{k}  - 0.2k =  \frac{25}{5} - 0.2(5) = 5 - 1 = 4

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Does anyone understand this?. I also have to show my work.
snow_lady [41]

Answer:

Ans A). The graph is shown.

Ans B). 18.3333 C temperature when F is 65 temperature

Ans C). 32 F when the line crosses the horizontal axis

Ans D). Slope of line C=\frac{5}{9}(F -32) is \frac{5}{9}

Step-by-step explanation:

Given equation is C=\frac{5}{9}(F -32)

Ans A).

For the table,

Take the four value of F as 32,41,50,59.

For F = 32.

The value of C is

C=\frac{5}{9}(F -32)

C=\frac{5}{9}(32 -32)

C=0.

For F = 41.

The value of C is

C=\frac{5}{9}(F -32)

C=\frac{5}{9}(41 -32)

C=05

For F = 50.

The value of C is

C=\frac{5}{9}(F -32)

C=\frac{5}{9}(50 -32)

C=10

For F = 59.

The value of C is

C=\frac{5}{9}(F -32)

C=\frac{5}{9}(32 -32)

C=15

<em>Note: The figure shows a graph of given equation with points.</em>

Ans B). Estimate temperature in C when the temperature in F is 65

For F = 65.

The value of C is

C=\frac{5}{9}(F -32)

C=\frac{5}{9}(32 -32)

<em>C=18.333333.</em>

Ans C). At what temperature, graph lien cross the horizontal axis

When the line crosses the horizontal axis, C=0

Therefore,

C=\frac{5}{9}(F -32)

0=\frac{5}{9}(F -32)

0=(F -32)

F=32 Temperature.

Ans D). Slope of the line C=\frac{5}{9}(F -32)

The slope of line is given by s= \frac{Y1-Y2}{X1-X2}

Take points from the table of answer A.

let (32,0) and (41,5) using for slope.

s= \frac{Y1-Y2}{X1-X2}

s= \frac{0-5}{32-41}

s= \frac{5}{9}

Slope of line C=\frac{5}{9}(F -32) is \frac{5}{9}

7 0
3 years ago
Can you also give me a step by step so I can learn to please.
kupik [55]

Answer:

Step-by-step explanation:

First step is Reflection over x-axis ⇒ Δ A' B' C'

Second step is Translation 2 units to the right ⇒ Δ A" B" C"

5 0
2 years ago
The diameter of a circle is 19 m. Find the circumference to the nearest tenth\textit{to the nearest tenth}to the nearest tenth.
Anna71 [15]

Answer:

361

Step-by-step explanation:

because the circumference is 19 must find the nearest tenth value is 361

8 0
2 years ago
Please help 20 points !!!! right answers please
Kamila [148]

Answer:

0.6 inch

Step-by-step explanation:

The volume of a sphere is calculated through the equation,

                           V = 4πr³/3

Which means that the radius is calculated by the equation,

                                (3V/4π)^(1/3) = r

Substituting,

           Sphere A,       (3x30/4π)^(1/3) = r = 1.927 in

           Sphere B,        (3x10/4π)^(1/3) = r = 1.336 in

When we subtract the radius, we get an answer of 0.59 inch. Therefore, the answer to this item is approximately 0.6 inch.

8 0
3 years ago
What is the value of the expression below when w=9 and x=3?<br> 2W - 2x
Vikentia [17]

Answer:

Step-by-step explanation:

2(9)-3(3)=9

6 0
3 years ago
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