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2 years ago

15. Solve the equation: x² + 18x + 81 = 9

Mathematics

2 answers:

Andreas93 [3]2 years ago

6 0

Answer:

x= -6,-12

Step-by-step explanation:

Gnoma [55]2 years ago

5 0

Answer: x = -6 and or x = -12

Step-by-step explanation:

there could be two possible answers to your question hope this helps.

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Simplify this ratio completely 24/16

Bas_tet [7]

Answer:

3/2 or 1.5

Step-by-step explanation:

24/16 = 12/8

12/8 = 6/4

6/4 = 3/2

So, if you want fraction it's 3/2 and decimal is 1.5

5 0

3 years ago

if you divide a five-digit number by a one-digit number, what is the largest possible remainder you can get ?

solmaris [256]

99999/8 has a remainder of 7

6 0

3 years ago

Read 2 more answers

"In the figure, what is m A) 15 B) 35 C) 50 D) 65"

laila [671]

B) 35
the formula is .5(outer angle - inner angle) = .5(100-30)=.5*70=35

7 0

3 years ago

Read 2 more answers

Radioactive Waste The rate at which radioactive waste is entering the atmosphere at time t is decreasing and is given by Pe^-kt,

Dmitry_Shevchenko [17]

Answer:

$\displaystyle{\int^{\infty}_0 {50e^{-0.04t}}\, dt}=1250$

Step-by-step explanation:

Given:

$T =\displaystyle{\int^{\infty}_0 {Pe^{-kt}} \, dt}$

where,

T = total amount of waste

P = 50, the initial rate

k = 0.04

t = time

$T =\displaystyle{\int^{\infty}_0 {50e^{-0.04t}} \, dt}$

now we need to solve this integral!

$T =\displaystyle{50\int^{\infty}_0 {e^{-0.04t}} \, dt}$

$T = \left|50\left(\dfrac{e^{-0.04t}}{-0.04}\right)\right|^{\infty}_0$

$T = \left|-1250e^{-0.04t}\right|^{\infty}_0$

$T = (-1250e^{-0.04(\infty)})-(-1250e^{-0.04(0)})$

when any number has a power of negative infinity it is 0. because: $a^-{\infty} = \dfrac{1}{a^{\infty}} = \dfrac{1}{\infty} = 0$ , like something being divided by a very large number!

$T = (-1250(0))-(-1250e^0)$

$T = 1250$

this is the total amount of waste

6 0

2 years ago

A student athlete run 3 1/3 miles in 30 minutes A professional runner can run 1 1/4 times as far in 30 minutes . how far can the

IrinaK [193]

The professional runner can run 4 1/6 miles in 30 minutes.

Since the professional can run 1 1/4 times as far in 30 minutes, we multiply 3 1/3 by 1 1/4:

(3 1/3)(1 1/4)

Convert each to an improper fraction (multiply the whole number by the denominator and add the numerator):
10/3(5/4) = 50/12 = 25/6 = 4 1/6.

4 0

3 years ago