Which method is better for solving the following equation? 4x2+7x -8= 0

Mathematics

1 answer:

julsineya [31]3 years ago

7 0

Order of operations

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Calculate the account balance for $800 left on deposit for 255 days earning 5.25% compounded daily.

Svetradugi [14.3K]

The value would be 829.89.

The formula we use is

$A=p(1+\frac{r}{n})^{nt}$ ,

where A is the total amount, p is the principal, r is the rate expressed as a decimal number, n is the number of times per year the interest is compounded, and t is the number of years.

We will use 800 for p; 5.25/100 = 0.0525 for r; 365 for n; and (255/365) for t (since it is not a full year):
$A=800(1+\frac{0.0525}{365})^{\frac{255}{365}\times365}
\\
\\=800(1+\frac{0.0525}{365})^{255}=829.89$

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3 years ago

In psychology lab, Tetiana is conducting an experiment on depth perception using the Howard-Dolman box. Inside the box are two v

erma4kov [3.2K]

Answer:

within-groups

Step-by-step explanation:

According to my research on the scientific method, I can say that based on the information provided within the question the independent variable is being manipulated within groups, because she is not using a pretest and her design is within-groups. This is because she is using the posttest-only control group design which is a research design where at least two groups, one of which does not receive a treatment or intervention, and data is collected on the outcome measure after the treatment or intervention.

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3 years ago

What do you multiply by itself to get 49?

kirza4 [7]

We try the all of the numbers until we find it
1*1=1
2*2=4
3*3=9
4*4=16
5*5=25
6*6=36
7*7=49
So the answer is 7

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3 years ago

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kati45 [8]

Answer:

The slope is -2

The y-intercept is (0,1)

Slope=mx

y-intercept=b

y=mx+b

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3 years ago

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1 year ago