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4 years ago

14

The temperature in Lakeside was 21°C. The temperature in Salem was 9°C. How much warmer was the temperature in Lakeside than the

temperature in Salem?

2 answers:

Lena [83]4 years ago

6 0

Your Answer Is 12 Degrees Celsius.

21 - 9 = 12

horrorfan [7]4 years ago

3 0

12 degrees celsius i can’t find the symbol but that’s the answer.

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Tim has completed five math problems and 13 minutes if he continues at the same rate how long will it take him to finish 20 prob

Likurg_2 [28]

Answer:

52 minutes

Step-by-step explanation:

it takes him 13 minutes to complete 5 so if he wants to do 20 problems do 20 divided by 5 (4) then do 13 times 4=52

5 0

3 years ago

The average (arithmetic mean) of y numbers is x. if 30 is added to the set of numbers, then the average will be x - 5. what is t

Anastasy [175]

Given,

AM of y numbers = x.

Let the sum of y numbers be s.

AM of y numbers = x

$\frac{s}{y} = x$

$s = y*x$

Given, when 30 is added to the y numbers, the AM becomes x - 5.

$\frac{s + 30}{y + 1} = x - 5$

$\frac{y*x + 30}{y +1} = x - 5
$

$y*x + 30 = (x -5)( y +1)$

$y*x + 30 = y*x + x - 5y -5$

$5y = x - 5 -30 = x - 35
$

$y = \frac{x -35}{5}$

8 0

4 years ago

The quadratic equation ax^2+32x+c=0 has exactly one solution. If a+c=130, and a>c, find the ordered pair (a,c).

vitfil [10]

Ie 32^2 - 4ac=0 so ac=256 and a+c=130
So, that means:2 equations ac=256 a+c=130 ie c=130-a
So,a(130-a)=256 so 130a -a^2=256 ie a^2-130a +256=0 (a-2)(a-128)=0
Finally,giving a= 2 or a=128 so, a=2 c=128 or a=128 c=2
Since, a>c , a=128 and c=2 ie (128,2)

4 0

4 years ago

Find the perimeter.

serg [7]

Answer:

b) 70 feet

Step-by-step explanation:

let me know if you want an explanation please :)

7 0

3 years ago

Read 2 more answers

At t= 0, a particle starts from rest at x= 0, y = 0, and moves in the xy plane with an acceleration a⃗ = (4.0i^ + 3.0j^)m/s2. As

alexira [117]

Given that: a = acceleration = (4i^ + 3j^) m/s^2

Using the following relations:
a = dv/dt
v = <span>∫ a dt

such that:
</span>v = ∫ (<span>4i^ + 3j^</span>) dt + C
v = (4t + Cx)i^ + (3t + Cy)j^

Therefore:
Vx = 4t + Cx
Vy = 3t + Cy

At t = 0, Cx = Cy = 0

Finally:

Vx = 4t
Vy = 3t

8 0

3 years ago

Read 2 more answers