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2 years ago

Which of the following shows the correct steps in solving the equation? -8x + 3 = 19

Mathematics

2 answers:

Firlakuza [10]2 years ago

5 0

Answer:

-8x=19-3

-8x=16

x= 16/-8

x=-2

Step-by-step explanation:

Mashutka [201]2 years ago

5 0

Answer:

X=-2 (The steps are shown below.

Step-by-step explanation:

-8x+3=19

-3 -3

-8x=16

-8x/-8=16/-8

x=-2

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Find the value of 5w+1 given that 7w-7=7.

Katyanochek1 [597]

Answer:

lets find the exact value of w

7w - 7 = 7

+7 +7

7w = 14

/7 /7

w = 2

Now let's replace w with 2

5(2) + 1 = 11

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2 years ago

On a test that has a normal distribution, a score of 49 falls three standard deviations below the mean, and a score of 59 falls

DedPeter [7]

Answer:

Step-by-step explanation:

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3 years ago

A scatter plot is made comparing x, the number of hours since midnight, with y, the number of lights turned on in a house. What

Zepler [3.9K]

Answer:

7 hours since midnight and 8 lights turned on.

Step-by-step explanation:

(x,y) so 7 is the x and 8 is the y.

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2 years ago

The sticker has a base of 6.5cm and a height of 10.1. What is the area of the sticker?

coldgirl [10]

Answer:

65.65

Step-by-step explanation:

1) Carry over the decimals in each number.

2) Multiply. This will give you 6,565.

3) Carry the decimal place and count how many times you moved it over. (2=1+1) Therefore, it gives you 65.65

I hope this helped

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3 years ago

Based on a study of population projections for 2000 to 2050, the projected population of a group of people (in millions) can b

Olegator [25]

Answer:

(a) 0.107 million per year

(b) 0.114 million per year

Step-by-step explanation:

$A(t) = 11.19(1.009)^t$

(a) The average rate of change between 2000 and 2014 is determined by dividing the difference in the populations in the two years by the number of years. In the year 2000, $t=0$ and in 2014, $t=14$ . Mathematically,

$\text{Rate}=\dfrac{A(2014) - A(2000)}{2014-2000}=\dfrac{11.19(1.009)^14-11.19(1.009)^0} {14}$

$A(0)=\dfrac{12.69-11.19}{14}=\dfrac{1.5}{14}=0.107$

(b) The instantaneous rate of change is determined by finding the differential derivative at that year.

The result of differentiating functions of the firm $y=a^x$ (where $a$ is a constant) is $\dfrac{dy}{dx}=a^x\ln a$ . Let's use in this in finding the derivative of $A(t)$ .

$A\prime(t) = \dfrac{A}{t}=11.19\cdot1.009^t\ln1.009$

In the year 2014, $t=14$ .

$A\prime(14) =11.19\cdot1.009^14\ln1.009=0.114$

6 0

3 years ago