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3 years ago

12

What expression can you write to describe the overall change in temperature?Do not included the temperature at the beginning of

the day since you only want to know about how much the temperature changed.

1 answer:

inessss [21]3 years ago

5 0

Im GOnna Try And Go With Decrese

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PLS HELP ME ON THIS PLSSSS

Deffense [45]

Answer:

Step-by-step explanation:

5 0

3 years ago

Given points A(-1, -2) and B(2, 4) where AP: BP=1:2, find the locus of point P.

koban [17]

Answer:

$x^2 + 4x + y^2 +8y = 0$

Step-by-step explanation:

Given

$A = (-1,-2)$

$B = (2,4)$

$AP:BP = 1 : 2$

Required

The locus of P

$AP:BP = 1 : 2$

Express as fraction

$\frac{AP}{BP} = \frac{1}{2}$

Cross multiply

$2AP = BP$

Calculate AP and BP using the following distance formula:

$d = \sqrt{(x - x_1)^2 + (y - y_1)^2}$

So, we have:

$2 * \sqrt{(x - -1)^2 + (y - -2)^2} = \sqrt{(x - 2)^2 + (y - 4)^2}$

$2 * \sqrt{(x +1)^2 + (y +2)^2} = \sqrt{(x - 2)^2 + (y - 4)^2}$

Take square of both sides

$4 * [(x +1)^2 + (y +2)^2] = (x - 2)^2 + (y - 4)^2$

Evaluate all squares

$4 * [x^2 + 2x + 1 + y^2 +4y + 4] = x^2 - 4x + 4 + y^2 - 8y + 16$

Collect and evaluate like terms

$4 * [x^2 + 2x + y^2 +4y + 5] = x^2 - 4x + y^2 - 8y + 20$

Open brackets

$4x^2 + 8x + 4y^2 +16y + 20 = x^2 - 4x + y^2 - 8y + 20$

Collect like terms

$4x^2 - x^2 + 8x + 4x + 4y^2 -y^2 +16y + 8y + 20 - 20 = 0$

$3x^2 + 12x + 3y^2 +24y = 0$

Divide through by 3

$x^2 + 4x + y^2 +8y = 0$

3 0

3 years ago

Figure b is a scaled copy of figure a. help?

Natalka [10]

The scale factor is 4 because if you multiply 4 to all the number on figure A it will equal to figure Bs numbers(sorry if it doesn’t makes sense)

4 0

3 years ago

The sum of a number, n, and a number 5 larger than it is 41. Which of the following equations could be used

Afina-wow [57]

I think it (3) one I’m not sure

3 0

3 years ago

M + 6 = 3m + 14<br> Solve?

labwork [276]

Answer:

-6=m

Step-by-step explanation:

m+6=3m+14

-m -m

6=2m+14

-14 -14

-12=2m

-12/2=-6

5 0

3 years ago

Read 2 more answers