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2 years ago

Use the rules of equations and inverse operations to solve the equation 3x^2=;8

Mathematics

1 answer:

PtichkaEL [24]2 years ago

4 0

8-2 and then 3 divided by 6 which will give you 0.5 so x=0.5

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At a restaurant you only have 20 dollars to spend on dinner. in addition to the cost of the meal you must pay only 5% sales tax

aev [14]

Alright so to do this you need some basic algebra
you have to pay an extra 20% of whatever you buy
thus we can make the following equation
.2x+x=20 (since 20 is the amount of money you have)
combining the like terms,
1.2x=20
and finally, dividing both sides by 1.2
x=$16.67
don't forget to check!
.05*16.67=.83 (sales tax makes the total $17.5)
.15*16.67=2.5 (tip makes the total $20)
whaddya you know, it works!
most expensive item you can buy will cost $16.67
hope this helped!

4 0

2 years ago

Help me pleas help me please

vodomira [7]

There are 13 time slots

8 0

2 years ago

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Tyshon’s age is 3 less than three times Cedric’s age. The sum of their ages is 57. How old is Tyshon?

Airida [17]

Let Cedric's age be c
tyshon= 3c-3
3c-3 +c =3c+c-3 = 4c-3
4c-3=57
4c=60
c=15
tyshon=15×3-3 = 42

8 0

3 years ago

Order the numbers from greatest to least 39,008; 39,801; 37,999

bearhunter [10]

37,999. 39,008,. 39,801

6 0

2 years ago

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Listed below are time intervals (min) between eruptions of a geyser. Assume that the "recent" times are within the past few y

Shalnov [3]

Answer:

p value = 0.039

t = - 2.169

Step-by-step explanation:

Applying the null and alternate hypothesis

$H_{0} : U1 = U2$

$H_{\alpha } : U1 \neq U2$

using excel worksheet to calculate for ( t and p )

t = -2.169

p = 0.039

from the results obtained

The conclusion is affected by the significance level because : 0.1 < p > 0.01

so when the significance level is = 0.1 the Null hypothesis is rejected and we can say the mean time interval will change while

if the significance level = 0.01 the Null hypothesis is accepted and we can not say the mean time interval has changed because the p -value is greater than 0.01

attached is the excel solution

7 0

3 years ago