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iren2701 [21]
2 years ago
6

Question 9 .....................................................................

Mathematics
1 answer:
egoroff_w [7]2 years ago
6 0

Answer:

your answer is D (6.72)

Step-by-step explanation:

substitute x by 4

y = 2.76(4) - 4.4

y = 11.12 - 4.4

y = 6.72

Therefore the option D (6.72) is the correct answer

- hope this helps, if it does click the thanks button to let me know :) -

- have a nice day, be safe & healthy -

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Finger [1]
Hope this helps you.

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3 years ago
Round to the underlined digit, 324,650-with 4 being the underlined digit
Delicious77 [7]
650 is greater than 500 so you round up to the nearest thousands digit.

325,000
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3 years ago
Which equation represents a line which is perpendicular to the line y = -x + 8?
natima [27]

Two lines are perpendicular between each other if their slopes fulfills the following property

m_1m_2=-1

where m1 and m2 represents the slopes of line 1 an 2, respectively.

To find the slope of a line we can write it in the form slope-intercept form

y=mx+b

Our original line is

y=-\frac{1}{8}x+8

Then its slope is

m_1=-\frac{1}{8}

Now we have to find the slope of the second line. Using the first property,

\begin{gathered} m_1m_2=-1_{} \\ -\frac{1}{8}m_2=-1_{} \\ m_2=(-1)(-8) \\ m_2=8 \end{gathered}

Then the second line has to have a slope of 8.

The options given to us are:

\begin{gathered} x+8y=8 \\ x-8y=-56 \\ 8x+y=5 \\ y-8x=4 \end{gathered}

Then we have to determine which of these options have a slope of 8. To do that we write them in the slope-intercept form:

\begin{gathered} x+8y=8\rightarrow y=-\frac{1}{8}x+1 \\ x-8y=-56\rightarrow y=\frac{1}{8}x+7 \\ 8x+y=5\rightarrow y=-8x+5 \\ y-8x=4\rightarrow y=8x+4 \end{gathered}

Once we have the options in the right form, we note that the only one of them that has a slope of 8 is the last one.

Then the line perpendicular to the original one is

y-8x=4

8 0
1 year ago
please help! write an expression for the 15th partial sum of the series 5/3 + 4/3 + 1 + ... using summation notation.
larisa86 [58]

Answer:

4

Step-by-step explanation:

3 0
3 years ago
A scientist determines that an antibiotic reduces a population of 20,000 bacteria to 5,000 in 24 hours. Find
Bad White [126]

Answer:

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Step-by-step explanation:

H= 1/r (in P - in A)

H=24

P=2000

A=5000

24= 1/r (in2000 - in5000)

24r = in 2000 - in 5000

r = in 2000 - in 5000

_________________

24 r

= 05 .7762265

= 5.8 %

8 0
3 years ago
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