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3 years ago

-4x - 3 = -6x + 9 need help please.

Mathematics

2 answers:

Valentin [98]3 years ago

8 0

Answer:

Step-by-step explanation:

-4x -3 = -6x +9

-4x = -6x +12

2X = 12

x = 6

Luda [366]3 years ago

3 0

Answer:

Step-by-step explanation:

-4x -3 = -6x +9

-4x-6x = 9+3

2x = 12

x = 12/2

x = 6

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The equation yˆ=−0.37x2+6.15x+52.3 approximates the average temperature in October in degrees Fahrenheit at an agricultural

sweet-ann [11.9K]

Answer:

The best estimate for the average temperature in October at 10 a.m. is 73.8 degrees Fahrenheit.

Solution:

Number of hours after 5 a.m.: x

At 10 a.m.→x=10-5→x=5

yˆ=−0.37(5)^2+6.15(5)+52.3

yˆ=−0.37(25)+30.75+52.3

yˆ=−9.25+30.75+52.3

yˆ=73.8

Answer: The best estimate for the average temperature in October at 10 a.m. is 73.8 degrees Fahrenheit.

4 0

3 years ago

What are the x- and y- coordinates of point E, which partitions the directed line segment from A to B into a ratio of 1:2?

Solnce55 [7]

The coordinates of the points A and B are not given. We'll assume: A(3,1) B(12,-5)

Answer:

The coordinates of E are (6,-1)

Step-by-step explanation:

Partition of a Segment

The length of segment directed from A(xa,ya) to B(xb,yb) can be decomposed in its x,y coordinates:

$x_{AB}=x_b-x_a$

$y_{AB}=y_b-y_a$

If a point E is to be in the segment and partition it into a ratio 1:2, then

\displaystyle \frac{x_{AE}}{{x_{EB}}=\frac{y_{AE}}{{y_{EB}}=\frac{1}{2}

But

$x_{AE}=x_e-x_a$

$y_{AE}=y_e-y_a$

$x_{EB}=x_b-x_e$

$y_{EB}=y_b-y_e$

Then we set the equation:

$\frac{x_{AE}}{{x_{EB}}=\frac{1}{2}$

$2(x_e-x_a)=x_b-x_e$

Operating and rearranging

$3x_e=x_b+2x_a$

Solving

$\displaystyle x_e=\frac{x_b+2x_a}{3}=\frac{12+6}{3}$

$x_e=6$

Similarily

$\displaystyle y_e=\frac{y_b+2y_a}{3}=\frac{-5+2}{3}$

$y_e=-1$

The coordinates of E are (6,-1)

8 0

4 years ago

Read 2 more answers

Which fraction is equivalent to a whole number select all that apply? 9/3, -16/8, 7/0, -5/3, 0/5

vredina [299]

9/3 = 3 So it is equivalent to a whole number
-16/8 = -2 which is a whole number

The rest are not equal to whole numbers if you work them out

8 0

3 years ago

Does the table show growth or decay?

kotegsom [21]

Answer:

growth because the numbers are clearly getting higher.

3 0

3 years ago

Read 2 more answers

Hello if you're able to answer this question help me and provide work as well, Thank you.

Gnoma [55]

Answer:

Option A. Only Khaled

Step-by-step explanation:

To know which option is correct, we shall use the formula suggested by both Khaled and Wilma to see which will give the sequence given in the question.

For Khaled:

F(n) = 1 • 3ⁿ¯¹

n = 1

F(n) = 1 • 3ⁿ¯¹

F(1) = 1 • 3¹¯¹

F(1) = 1 • 3⁰

F(1) = 1 × 1

F(1) = 1

n = 2

F(n) = 1 • 3ⁿ¯¹

F(2) = 1 • 3²¯¹

F(2) = 1 • 3¹

F(2) = 1 × 3

F(2) = 3

n = 3

F(n) = 1 • 3ⁿ¯¹

F(3) = 1 • 3³¯¹

F(3) = 1 • 3²

F(3) = 1 × 9

F(3) = 9

For Wilma

F(n) = 1 • 3ⁿ

n = 1

F(n) = 1 • 3ⁿ

F(n) = 1 • 3¹

F(1) = 1 × 3

F(1) = 3

n = 2

F(n) = 1 • 3ⁿ

F(2) = 1 • 3²

F(2) = 1 × 9

F(2) = 9

n = 3

F(n) = 1 • 3ⁿ

F(3) = 1 • 3³

F(3) = 1 × 27

F(3) = 27

SUMMARY

Using Khaled's formula i.e F(n) = 1 • 3ⁿ¯¹ we obtained 1, 3, 9,..

Using Wilma's formula i.e F(n) = 1 • 3ⁿ

We obtained 3, 9, 27,..

Now, comparing the sequence obtained using the formula of both Khaled and Wilma, we can see that only the sequence of Khaled is the same with the one given in the question. Therefore, only Khaled's formula is correct.

6 0

3 years ago

-4x - 3 = -6x + 9 need help please.​

-4x - 3 = -6x + 9 need help please.