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Irina-Kira [14]
3 years ago
6

-4+3b^2=143 Simplest radical form

Mathematics
1 answer:
Karolina [17]3 years ago
3 0

Answer:

- 4 + 3b {}^{2 }  = 143 \\ 3b {}^{2}  = 143 + 4 \\ 3b {}^{2} = 147 \\ b {}^{2}   =  \frac{147}{3}  \\ b {}^{2}  = 49 \\ b = 7

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Help&amp;EXPLAIN <br><br> Don’t use for points <br> I’ll report
kvasek [131]

Answer:

<em>x</em><em> </em><em>=</em><em> </em><em>20</em><em>°</em>

Step-by-step explanation:

given : x + 70° = 90°

( it is shown in the figure )

  • =》x + 70° = 90°
  • =》x = 90°- 70°
  • =》x = 20°

<em>hence</em><em>,</em><em> </em><em>x</em><em> </em><em>=</em><em> </em><em>20</em><em>°</em>

4 0
3 years ago
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May I Please Get Help With Questions 2 and 4
kotegsom [21]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
Drag the tiles to the correct boxes to complete the pairs.
lbvjy [14]

Answer:

(a) -22

(b) 22

(c) 440

(d) -2.20

Step-by-step explanation:

(a)

We need to find the average rate of elevation change in feet per second, if a submarine dives 440 feet in 20 seconds.

Change in position = -440

Change in time = 20

Rate of elevation change is the ratio of change in position and change in time.

Rate of elevation change =\frac{-440}{20}=-22

Therefore, the average rate of elevation change is -22 feet per second.

(b)

We need to find the number of boys if the total height of the boys is 26.4 meters and their average height is 1.2 meters.

Let n be the number of students.

\text{Average height}=\frac{\text{Total height}}{\text{No. of students}}

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n=\frac{26.4}{1.2}

n=22

Therefore, the number of boys is 22.

(c)

We need to find the average distance in miles traveled in 1 hour if 660 miles can be covered in 1.5 hours.

1.5 hours = 660 miles

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1 hours = \frac{660}{1.5} miles

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(d)

We need to find the average temperature change in degrees Fahrenheit per hour if the temperature fell 22 degrees Fahrenheit in 10 hours.

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\text{Average temperature}=\frac{-22}{10}=-2.20

Therefore, the average temperature change is -2.20 degrees Fahrenheit per hour.

3 0
3 years ago
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Which statements are true regarding f(x)=10/x+5
belka [17]

Answer:

1. The domain of f(x) is (–∞, –5) U (–5, ∞).

4. The y-intercept is (0, 2).

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6.  The end behavior is  x → –∞, f(x) → 0 and x → ∞, f(x) → 0.

Step-by-step explanation:

I got it correct on e2020

5 0
3 years ago
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elena-s [515]
Y = 25
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3 years ago
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