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3 years ago

Question 1 (1 point)

Mathematics

1 answer:

Firdavs [7]3 years ago

6 0

Answer:

B. false

Step-by-step explanation:

Square units

I hope that is useful for you :)

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HELP PLEASEEEEEEEE!!!!!!!!!!!!!!!!!

mariarad [96]

Plus or minus 3. (The 1st answer)

x^2 means (-3*-3) which equals 9

x^2 means (3838) which also equals 9

6*9=54

7 0

3 years ago

Read 2 more answers

Fine the class width

WITCHER [35]

Answer:

class width is 5

Step-by-step explanation:

8 0

3 years ago

Find the substance's half-life, in days. Round your answer to the nearest tenth.

shutvik [7]

Answer:

t = 5.6 day

t =5 days 14 hours 24 minutes

Step-by-step explanation:

Half life is the time it will take for the original value or quantity I'd a particular substance to decrease by half of it's original self.

N = N•e(-kt)

N• = 25

K = 0.1229

Then

N = 25/2 = 12.5

The reason because at the half life , it's original value will decrease to half.

Let's solve for the half life t

N = N•e(-kt)

12.5 = 25e(-0.1229t)

12.5/25 = e(-0.1229t)

0.5 = e(-0.1229t)

In 0.5 =-0.1229t

-0.69314 = -0.1229t

-0.69314/-0.1229 = t

5.6399 = t

To the nearest tenth

5.6 days = t

4 0

3 years ago

Which equation results from adding the equations in this system? 11 x minus 3 y = -17. Negative 4 x + 3 y = - 18.

marta [7]

Answer:

Therefore the results from adding the equation in this system is

$7x=-35$

Step-by-step explanation:

Given:

Equations as

$11x-3y=-17$ .......................1

$-4x+3y=-18$ .......................2

To Find :

Result when adding equation 1 and 2 = ?

Solution

On adding equation 1 and 2 the "3y" term will get cancel and the like terms will combine that is add (11x and -4x ) and ( -17 and - 18) as shown below

11x - 3y = -17

-4x + 3y = - 18

-------------------------------------------

7x + 0 = - 35

---------------------------------------------

Therefore the results from adding the equation in this system is

$7x=-35$

7 0

3 years ago

Read 2 more answers

If 3 is added to a number and the sum is multiplied by 3 the result is 7 times the number decreased by 9 find the numbers

Naya [18.7K]

Answer: $\frac{9}{2}$

Step-by-step explanation:

3(3 + x) = 7x - 9

9 + 3x = 7x - 9 distributed 3 on the left side

-3x -3x

9 = 4x - 9

+9 +9

18 = 4x

÷4 ÷4

$\frac{9}{2}$ = x

5 0

3 years ago