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vazorg [7]
3 years ago
9

A. 28.1 cm squared B. 3.8 cm squared C. 11.3 cm squared D. 56.2 cm squared

Mathematics
1 answer:
Colt1911 [192]3 years ago
6 0

Answer:

A. 28.1 cm^2

Step-by-step explanation:

a = bh

a = (7.6)(3.7)

a = 28.12 cm^2

a = 28.1 cm^2

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Evan invested $800 in an account that pays 3.25% interest compounded annually.
Aleksandr [31]

Answer:

Evans would have $852.8

Step-by-step explanation:

Given

PV = \$800

r = 3.25\%

t = 2

n = 1 --- annually'

Required

The future value

This is calculated using:

FV = PV*(1 + \frac{r}{n})^{nt

So, we have:

FV = 800 * (1 + 3.25\%/1)^{2*1}

FV = 800 * (1 + 3.25\%)^{2}

FV = 800 * (1 + 0.0325)^{2}

FV = 800 * (1 .0325)^2

FV = 852.845

FV = 852.8

FV =

8 0
3 years ago
I’ll give Brainly est help. B
natulia [17]

Answer:

C) 99 + 3x

Step-by-step explanation:

Since it's always going to cost 99, it'll stay like that since it's a constant

Since it's 3 PER person, that means 3 will have a variable: 3x

5 0
3 years ago
A sugar solution was made by mixing 7 ml of a 50% sugar solution and 3 ml of a 80% sugar solution. Find the concentration of the
pochemuha
7 * 0.5 + 3 * 0.8 = 3.5 + 2.4 = 5.9 

<span>5.9/10 X 100 = 59%


</span><span>59% concentration of new mixture</span>
4 0
3 years ago
Determine the equation of the line that passes through the given points. (If you have a graphing calculator, you can use the tab
siniylev [52]

Answer:

y = -2x

Step-by-step explanation:

It passes through -5, 10 and 5, -10

gradient = Δy/Δx

gradient = -10 - 10 / 5 -- 5

gradient = -20 / 10

gradient = -2

let's use -5, 10 for y = mx + b

10 = -2(-5) + b

10 = 10 + b

b = 10 - 10

b = 0.

the equation of the line is just y = -2x

6 0
2 years ago
Determine whether the situation calls for a survey, an observational study, or an experiment.
antoniya [11.8K]

Answer:

The answer is "experiment."

Explanation:

When it comes to finding out whether a new reading program can increase reading comprehension, an experiment is important. <em>This procedure is being used in order to validate a hypothesis, particularly in a research study.</em> In the situation above, you have to validate whether a new reading program can increase the reading comprehension or not.

The experiment consists of the <em>independent, dependent and controlled variables.</em> The independent variables are the ones being changed by the researcher, while the dependent variables tell whether the changes in the independent variable is significant. The controlled variables are the ones that are constant.

The<u> dependent variable above is the reading comprehension, </u>while the <u>new reading program is the independent variable. </u>Examples of controlled variables are the<u> age</u>s of the participants. The age directly affects the reading comprehension, thus it has to be considered.

4 0
3 years ago
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