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Readme [11.4K]
2 years ago
7

Negative number on a number line 2

Mathematics
2 answers:
Montano1993 [528]2 years ago
5 0
I am pretty sure it is Point D
vesna_86 [32]2 years ago
4 0

Answer:

point d is correct answer

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What's the answer ?????
ra1l [238]
1/2 because it's 2 times smaller
7 0
3 years ago
90 + 12 = 6(15 + 12) Yes or No
quester [9]

Answer:

This is false.

Step-by-step explanation:

90 +  12 = 102.

6(15+12) equals to 6(27) which is 162.


8 0
3 years ago
Read 2 more answers
What’s the slope of -2,2 and 4,-10
uysha [10]
Slope formula: y2-y1/x2-x1
-10-2/4-(-2)
-12/6
-2
The answer is -2
7 0
3 years ago
A tank contains 100 gal of brine made by dissolving 80 Ib of salt in water. Pure water runs into the tank at the rate of 4 gal/m
ohaa [14]

Answer:

Step-by-step explanation:

Amount of brine = 100 gal

amount of salt = 80 lb

rate of water running = 4 gal / min

Let A be the amount of salt in lb in the tank at any time t.

(a) dA/dt = rate of salt in - rate of salt out

Rate of salt in = 0

rate of salt out = A x 4 / 100 = A / 25 lb/min

So, dA/dt = 0 - A/25 = - A/25 lb/min

\frac{dA}{A}=-\frac{1}{25}dt

\int \frac{dA}{A}=-\frac{1}{25}\int dt

A(t) = C e^{-0.04t}

When t = 0, A = 80 lb

So,

A(t) = 80 e^{-0.04t}

(b) Now, A = 40 lb

So,

40 = 80 e^{-0.04t}

0.5 = e^{-0.04t}

take log on both the sides

ln 0.5 = - 0.04 t

t = 17.3 minutes

8 0
3 years ago
Using the problem below, solve and explain how you got the solution to the system of equation.
Paul [167]

Answer:

(5, -3)

y= -3

x= 5

Step-by-step explanation:

-x-2y=1

x+y=2

solve the equation

-x-2y=1

x=2-y

substitute the value of x into an equation

-(2-y)-2y=1

remove parenthesis

-2-y-2y=1

subtract y to 2y

-2-y=1

add 2 from both sides

-y=3

divide both sides by -y

y= -3

substitute the value of y into an equation

x=2-(-3)

remove parenthesis

x=2+3

add 2 to 3

x=5

----------

(5,-3)

----------

7 0
3 years ago
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