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7nadin3 [17]
2 years ago
13

Surface area I need help !!!

Mathematics
1 answer:
Olegator [25]2 years ago
3 0

Answer:

75.4 to 1 decimal place

If you want an explanation comment on the answer.

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David and Ashley want to calculate $8.27 – $2.98 by first calculating $8.27 – $3 = $5.27. David says that they must subtract $0.
Ierofanga [76]

Number lines are used to represent numbers on a line at a regular interval.

<em>David's statement is correct, while Ashley is incorrect</em>

The expression is given as:

\mathbf{8.27 - 2.98}

<u>Using number lines</u>

The end result on David's number line is 5.29, while the end result on Ashley's number line is 5.25

The correct result of the expression \mathbf{8.27 - 2.98} is 5.29 shows that David is correct

See attachment for the number lines that illustrate <em>David and Ashley's statements</em>

<u>Another way</u>

David's statement can be expressed as:

\$8.27 - \$3 - \$0.02 = \$5.29

While, the expression for Ashley's expression is:

\$8.27 - \$3 + \$0.02 = \$5.25

The original expression is:

\$8.27 - \$2.98 = \$5.29

By comparing the above expressions, we can conclude that <em>David is correct</em>

Read more about number lines at:

brainly.com/question/18611090

4 0
3 years ago
-1/2(x+4)=y-2<br><br> 2x-y=4<br><br> Find the slope, x-intercept, and y-intercept for both equations
alina1380 [7]

The slope-intercept form: y = mx + b

m - slope

b - y-intercept

We have -1/2(x + 4) = y - 2      <em>use distributive property</em>

(-1/2)(x) + (-1/2)(4) = y - 2

-1/2 x - 2 = y - 2       <em>add 2 to both sides</em>

-1/2 x = y → y = -1/2 x + 0

slope: m = -1/2

y-intercept: b = 0

x-intercept for y = 0. Substitute:

-1/2 x = 0         <em>multiply both sides by -2</em>

x = 0

<h3>Answer:</h3><h3>slope = -1/2</h3><h3>y-intercept = 0</h3><h3>x-intercept = 0</h3>

--------------------------------------------------------------------

2x - y = 4      <em>sutract 2x from both sides</em>

-y = -2x + 4      <em>change the signs</em>

y = -2x + 4

slope: m = -2

y-intercept: b = 4

x-intercept for y = 0. Substitute:

-2x + 4 = 0       <em>subtract 4 from both sides</em>

-2x = -4       <em>divide both sides by -2</em>

x = 2

<h3>Answer:</h3><h3>slope = -2</h3><h3>y-intercept = 4</h3><h3>x-intercept = 2</h3>
5 0
3 years ago
PLEASEEEEEE HELLLPPPPP!!!!!!!
Marta_Voda [28]
The right answer to that would be A
3 0
3 years ago
Read 2 more answers
In this diagram, lines AC and DE are parallel and line DC is perpendicular to each of them. What is a reasonable estimate for th
igomit [66]

The reasonable estimate for the length of side DE is 3 units

Find the diagram of the question attached. The given triangle ABC and BDE are similar triangles.

Using the similarity theorem of a triangle, this is expressed as:

AC = DE

Using the pythagoras theorem to get the length of AC:

AB^2 = AC^2 + BC^2

5^2 + AC^2 + 4^2

AC^2 = 25 - 16

AC^2 = 9

AC= 3

Since AC = DE, hence the reasonable estimate for the length of side DE is 3 units

Learn more on similar shapes here: brainly.com/question/14285697

4 0
3 years ago
ASAP PLZ which properties are present in a table that represents an expotential function in the form y=b^x when b&gt;1?
sdas [7]

Answer:

I and IV

Step-by-step explanation:

4 0
3 years ago
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