Change20c degrees Fahrenheit (f=9/5c+32)

Answer:

x > -3, x >7

Step-by-step explanation:

for -2x < 6:

first divide each side by 2: -x < 3

then divide each side by -1, so the final answer is: x > -3

(whenever you divide by a negative number you have to flip the sign)

for 4x-7>21:

first, add 7 to each side: 4x>28

then divide each side by 4, and the final answer is: x >7

Answer:

150 km squared

Step-by-step explanation:

5*1.5=7.5

4*5=20

7.5*20=150

Answer:

150km²

Step-by-step explanation:

1.5 x 5 = 7.5

4 x 5 = 20

20 x 7.5 = 150

Answer:

4.8 gallons of water.

Step-by-step explanation:

Mai is filling his fishing tank with water. This shows a proportional relation between the time and the amount of water filled.

Amount of water filled (In gallons) ∝ Duration (In minutes)

w ∝ t

w = kt  ---------(1)

For t = 0.5 gallons,

Amount of water = 0.8 gallons

From equation (1),

0.8 = k(0.5)

k = 1.6

So the proportionality equation will be,

w = 1.6t

Now we have to find the amount of water filled in 3 minutes.

w = 1.6 × 3

   = 4.8 gallons

Therefore, water filled in the tank after 3 minutes = 4.8 gallons.

Answer:

D

Step-by-step explanation:

The relantionship is perpendicular, because when you do the procedure that the question talks about, you find a circumference, and A and B are points of that cirumference.

As the segment is her diameter, we know that they, the points A and B, are perpendicular to the segment.

Why?

Because the definition of a circumference is:

> A single point in a bidimensional space that has the same distance from a infinity amount of points - remember that a point has no dimension, so there is infinity points over one point -, what became to be a circumference.

Also, take note that the lower distance for any point is a straight segment, who is perpendicular for both points.

But talk maybe do not help. Look the annex.

Answer:

26$ because 13+13 is 26 boom

Answer:

600-700

Step-by-step explanation:

Answer:

ok i know this is correct %100 it is D

Step-by-step explanation:

this is because if u have 8/20 and reduce by four do divide 8 by four and 20 by four that would be 2/5!!

IF THIS HELPED PLZ GIVE ME BRAINIEST!!

Answer:

2 / 5

Step-by-step explanation:

8/20 simplifies to 2/5. Simply divide 8 and 20 by 4 and you get your simplified fraction.

Answer:

1) 7/12 is rational

2) √28 is irrational

3) √13/25 is irrational

4)  -15 is irrational

5) 5π is irrational

Answer: can you write the question??????!!!

Step-by-step explanation:

Answer:

I dont understand the equation

Answer:

D

Step-by-step explanation:

0.461 is the thousands, search it up if yo don't believe me. Type 'is .461 in the thousandth' and its the first link

Answer:

Step-by-step explanation:

yes you can

the form of the equation is y=mx+b

the y intercept (0,b) when x=0 the y=b

and if you know the slope m, then you can form the equation

example : m=3 , and y intercept is (0,1)

y=mx+b

y=3x+b ( at point (0,1)

1=3(0)+b

b=1

the equation is y=3x+1

Answer:c

Step-by-step explanation:

Answer:

THIS MIGHT HELP U ....

Answer:

ºC = (ºF - 32) / (9/5)

Step-by-step explanation:

Take the formula that you already have:

ºF = (ºC × 9/5) + 32

Flip the ºF and ºC:

ºC = (ºF × 9/5) + 32

Move the whole number to the right side of the equation and change it's sign:

ºC = (ºF - 32) / (9/5)

(This will also force the fraction to move to the right hand side of the equation, but for that you keep the value of the number the same)

Hope this helped!

Answer:

AA, SAS, SSS

Step-by-step explanation:

Answer:

(-1)(-3)

3

Step-by-step explanation:

i think u multiply them i hope thats right srry if its not

Answer:

The expression  -10 - (-4) represents the given diagram.

Step-by-step explanation:

Here, the total number of blue boxes marked with (-) = 10

So, in Total number of (-) are 10 x (-1) = -10

Now, the number of boxes crossed out = 4

So, the total value crossed out = 4 x ( Value on each box) = 4 ( -1) = -4

⇒ The value Left after crossing  = Total value - The crossed out value

                                                       = -10 - (-4)

Hence, the expression  -10 - (-4) represents the given diagram.

Answer:

the answer is 4

Step-by-step explanation:

Answer:

x=5±√2

Step-by-step explanation:

x^2-10x=-23

x^2-10x+25=-23+25

(x-5)^2=2

x-5=±√2

x=5±√2

Answer:

(1,2) and slope = 0

Step-by-step explanation:

Look where the line crosses the y and because the line is parallel to the x the slope is equal to zero

Answer:

it would take 20 months and it would cost $6450

Step-by-step explanation:

in order to solve this question we need to equate the amount at each dealer against one another

make the months as an unknown variable (x)

2450 + 200x = 2950 + 175x

now make x the subject of formula

200x - 175x = 2950 - 2450

25x = 500

x = 500/25

x = 20

the amount would be the same in 20 months

replace x with 20

2450 + 200 (20) = 6450

$6450

Answer:

(3, 6)

Step-by-step explanation:

If you create a mini graph, like I did, you would have seen that the middle point is at the co-ordinates (3,6). I have attached a image to this reply, with my "graph". (Sorry if its a little ugly, but that doesn't matter, the math does.)

Answer:

-.32

Step-by-step explanation:

Answer:

0.36

Step-by-step explanation:

Given:

Speed of train = 85 miles per hour

Total distance = 102 miles

To find:

The time taken by train to cover 102 miles.

Solution:

We know that,

[tex]Speed=\dfrac{Distance}{Time}[/tex]

On substituting the values, we get

[tex]85=\dfrac{102}{Time}[/tex]

[tex]Time=\dfrac{102}{85}[/tex]

[tex]Time=1.2[/tex]

Therefore, the time taken by train to cover 102 miles is 1.2 hours.