At midnight, the temperature was 15°C. Over the next six hours, the temperature dropped 3 degrees each hour. By noon, the temperature increased 12 degrees. A. What was the temperature at 6 a.m.? B. Then what was the temperature at noon?

Answer:

x=−4

Step-by-step explanation:

i hope this help you

Answer:

1) Slope= 2, y-intercept=4, equation: y=2x+4

2.Slope= -10 , y-intercept= 60 , equation: y=-10x+60

Step-by-step explanation:

Slope formula: [tex]\frac{y_{2}-y_1 }{x_2-x_1}[/tex]

1. Plug in two sets of cordinates into the equation

(0,2) (2,8)

2. Solve, slope =2

3. Plug in one pair into the point slope formula

Point slope formula: [tex]y-y_1=slope(x-x_1)[/tex]

4. y-8=2(x-2)

5.y-8=2x-4

6. y=2x+4

Do the same for the other equation

Answer:

1: slope

2: y-intercept

1a: slope= 3

1b: 2

y=3x+2

2a: slope= -10

2b: 60

y= -10x+60

Step-by-step explanation:

Answer:

Answer: Option D.

Step-by-step explanation:

Hey there!!

Here, To find the equation of a st.line passing through point (3,1) is :

[tex](y - 1) = m1(x - 3)[/tex]

It is the first equation.

Given, Another equation is:

[tex]y = \frac{2}{3} x + 1[/tex]

It is 2nd equation.

Comparing the 2nd equation with y = mx+c we get,

Slope (m2) = 2/3.

As per the condition of parallel lines,

m1 = m2 = 2/3.

Putting, the value of m1 in equation 1st we get,

[tex](y - 1) = \frac{2}{3} (x - 3)[/tex]

or, 3 (y-1) = 2(x-3)

or, 3y - 3 = 2x - 6

[tex]y = \frac{2x - 6 + 3}{3} [/tex]

[tex]y = \frac{2}{3} x - 1[/tex]

Diving-3/3 = -1.

Therefore, y = 2/3 x - 1 is the required equation.

Hope it helps.

Answer:c.11

Step-by-step explanation:

Answer:

Both are correct.

Step-by-step explanation:

In the point (4,-2) and (4,-7), the x-coordinates are same. So, the distance between these points is the absolute difference between the y-coordinates of these points.

[tex]Distance=|-2-(-7)|=5\text{ units}[/tex]

So, Laura is correct.

In the point (2,3) and (-9,3), the y-coordinates are same. So, the distance between these points is the absolute difference between the x-coordinates of these points.

[tex]Distance=|2-(-9)|=|2+9|=11\text{ units}[/tex]

So, Ryan is correct.

Hence, both are correct.

Answer:

4

Step-by-step explanation:

because you subtract it.

Answer:

=2016x5

Step-by-step explanation:

(x+y)n=∞∑r=0~nCrxn−ryr is given by

Tr+1=~nCrxn−ryr.

Hence T5=T4+1=~9C4x9−4⋅24

=9!(9−4)!4!⋅x5⋅16

=2016x5

Answer:

42 Hours.

Step-by-step explanation:

As an equation where y is the total pages and x is hours of class:

y=1+1x since she started with 1 page and does 1 page per hour.

Setting the total pages she needs as 43 (y=43) we get:

43=1+1x

Subtract one on both sides

42=1x

The 1 doesn't need to be written so

x=42

Therefore, it'll take her 42 hours to write all those notes.

Answer:

Length = 63 feet

Step-by-step explanation:

concept used:

perimeter of rectangle = 2( length + width)

____________________________________________

Given that Jason has 144 feet of material and all is used in building fence.

It means that perimeter of fence is 144 feet.

2. Width of fence = 9 feet

let the length be x

perimeter of rectangle = 2( length + width)

then perimeter of fence will be = 2(9+x)

As given above perimeter of fence is 144 feet.

2(9+x)  = 144

=> 9 + x = 144/2 = 72

=> x = 72 - 9 = 63

Length = 63 feet.

Answer:

21 yards

took the test :D

The domain is just the x values.

Domain: -8,4,5,7

Answer:

a = 6 or a = -58/8

Step-by-step explanation:

I think you meant to ask us to solve for a.

There are two cases to solve for:

5 + 8a = 53 or -(5 + 8a) = 53

8a = 48 or 5 + 8a = -53

a = 6 or 8a = -58

a = 6 or a = -58/8

Answer:

1/6

Step-by-step explanation:

x = 4 or x = 0

Hope that helps!

Answer:

Step-by-step explanation:

This problem is on rate.

firstly we have to find the rate at which 1 ton is sold

given that 3/8 ton is sold for $24

hence 1 ton will be sold for X

cross multiply

X = 24/3/8

inverse the denominator and multiply the result with the numerator we have

X= 24*8/3

X= $64

Now having found out that 1 ton cost $64

2 tons will cost =64*2

                         = $128

Therefore at this rate two tons will cost $128

Answer:128

Step-by-step explanation:

Answer:

-27

Step-by-step explanation:

-5-9=-14

-14-13=-27

Answer:

1. <

2. >

3. >

Hope this helped!

Answer:

1. <

2. >

3. >

Step-by-step explanation:

Answer: 170

Step-by-step explanation:

If you’re looking for 5780 divided by 34 it’s 170. But if you wanted 34 divided by 5780 it’s 0.005882.

Im pretty sure the answer you’re looking for is the first one XD

Just remember that you always divide the big number by the smaller one :).

I hope you found my answer helpful! If you did, give it a thanks. You can even give it a brainliest if you feel like it ;D

Answer:

About 4.

Step-by-step explanation:

28.4 * 4 is equal to 113. 6, so about four shoes would be equal to a meter, since a meter is equal to 100cm.

Answer:

4. 30

Step-by-step explanation:

-3(-10)

=3×10

= 30

Answer: $11,142.13

Step-by-step explanation:

You add 777.68 to 10,364.45.

Answer:

11,142.13

Step-by-step explanation:

You add those 2 number

Answer: 9 9/13, 9 5/7, 9.72, 9 9.74, 9 3/4

[tex]h=\frac{-b}{2a}[/tex]

[tex]k=f(h)[/tex]

[tex]h=\frac{6}{2}[/tex]

[tex]h=3[/tex]

[tex]k=f(3)[/tex]

[tex]f(3)=9-18+1[/tex]

[tex]f(3)=-8[/tex]

The vertex is [tex](3,-8)[/tex]

Hope this helps.

頑張って!

Answer:

[tex]v = \frac{A - r}{rf}[/tex]

Step-by-step explanation:

Given

[tex]A = r + rvf[/tex]

Required

Solve for v

[tex]A = r + rvf[/tex]

Subtract r from both sides

[tex]A - r = r - r + rvf[/tex]

[tex]A - r = rvf[/tex]

Divide both sides by rf

[tex]\frac{A - r}{rf} = \frac{rvf}{rf}[/tex]

[tex]\frac{A - r}{rf} = v[/tex]

Reorder the expression

[tex]v = \frac{A - r}{rf}[/tex]

At this point, we;ve solved for v

Answer:

Universal set is a set which contains all values

Union of Sets : The joining of two or more sets  .

Step-by-step explanation:

Step-by-step explanation:

Hey there!!

Let me simply clear you.

Given,

AB: 2y+2x =8.

Let's take the equation in slope intercept form.

2y = -2x +8

[tex]y = \frac{ - 2x}{2} + \frac{8}{2} [/tex]

[tex]y = - 1x + 4[/tex]

Comparing the equation with y= mx+c, we get;

Therefore, slope of AB is -1.

Now,

Again, the another equation is,

y + x = 2

y = -x+2

Comparing, the equation with y = mx + c.

Therefore, slope of CD = -1

For parallel lines, m1=m2.

slope of AB (m1) = -1

slope of CD(m2)= -1

As m1= m2 {True}.

Therefore, They are parallel to eachother.

Hope it helps...

Answer:

-4742

Step-by-step explanation:

-17 + -68+(+56) -5333+620

-5418+58+620

-5418+676

-4742

:) Hope this helped

Answer:

-4742

steps :

-17 - 68 = -85

-85 + 56 = 29

29-5333= -5304

-5304+620 = -4742