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2 years ago

12

Find the surface area. Round to the nearest tenth, as necessary. I need helpppp ASAP Please

2 answers:

Aliun [14]2 years ago

7 0

Answer:

D

Step-by-step explanation:

6(6.4)^2

=245.76

245.76 rounded = 245.8

son4ous [18]2 years ago

3 0

Answer:

Option D, $245.8\ units^2$

Step-by-step explanation:

<u>Step 1: Determine the area</u>

$A = l * w$

$A = 6.4\ units * 6.4\ units$

$A = 40.96\ units^2$

<u>Step 2: Determine the surface area</u>

We know that we have 6 sides of equal area that means that we can just use $6 * 40.96\ units^2$ which gives us $245.76\ units^2$ .

Answer: Option D, $245.8\ units^2$

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Which would the phrase "six more than a number" look like as a variable expression? x + 6 6x 6x + 6 6 – x Flag this Question

AnnZ [28]

Answer:

x + 6

Step-by-step explanation:

6 more than a number is the same as adding 6 to the number.

If the number is x, then 6 more than the number x is x + 6.

Answer: x + 6

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4 years ago

Use the subtraction property of equality to complete the following statement:

Delicious77 [7]

<span> 10x + 6 = 21
first subtract 6 from both sides of the equation
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If you take this one step further and solve for x then you divide both sides of the equation by 10 so then the solution is x=1.5

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4 years ago

Determine three numbers a , b , c

natta225 [31]

Since $a,b,c$ are in geometric progression, if $r$ is the common ratio between consecutive terms, then

$a=a$

$b = ar$

$c=ar^2$

Since $a,b,c$ are also in arithmetic progression, if $d$ is the common difference between consecutive terms, then

$a = a$

$b = a + d \implies d = b-a$

$c = b + d = a + 2d \implies c = a + 2(b-a) = 2b-a$

Given that $abc=27$ , we have

$abc = a\cdot ar\cdot ar^2 = (ar)^3 = 27 \implies ar = 3 \implies a = \dfrac3r$

$b = \dfrac3r \cdot r = 3$

$c = \dfrac3r \cdot r^2 = 3r$

It follows that

$c = 2b-a \iff 3r = 6 - \dfrac3r$

Solve for $r$ .

$3r - 6 + \dfrac3r = 0$

$3r^2 - 6r + 3 = 0$

$r^2 - 2r + 1 = 0$

$(r-1)^2 = 0$

$\implies r=1 \implies a=b=c=3$

so the only possible sequence is {3, 3, 3, …}.

7 0

2 years ago

What is 12+3? I really need hwelp on this

yaroslaw [1]

Answer:

15

Step-by-step explanation:

12+3=15

6 0

4 years ago

A line contains (9,y) and (-6,3). It has slope 2/3, find y

koban [17]

The line contains (9,y) and (-6,3) Then y is 13

<em><u>Solution:</u></em>

Given that a line contains (9, y) and (-6, 3)

Slope of line is $\frac{2}{3}$

To find: y

<em><u>The slope of line is given as:</u></em>

$m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

$\text {Here }\left(x_{1}, y_{1}\right)=(9, y) \text { and }\left(x_{2}, y_{2}\right)=(-6,3)$

<em><u>Substituting the values in formula,</u></em>

$m=\frac{3-y}{-6-9}$

Substitute $m = \frac{2}{3}$

$\frac{2}{3}=\frac{3-y}{-6-9}$

2(-6 - 9) = 3(3 - y)

Multiplying the terms with terms inside bracket

-12 - 18 = 9 - 3y

Move the variable to one side

-30 = 9 - 3y

On solving we get,

3y = 30 + 9

3y = 39

Divide both sides by 3, we get

y = 13

Thus y = 13

6 0

4 years ago