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lana [24]
3 years ago
14

Draw an area model and then solve using the standard algorithm

Mathematics
1 answer:
Serggg [28]3 years ago
4 0

Answer:

well if your asking for 21 x 23 its 483

Step-by-step explanation:

Hi if the awnser for the equation is not the anwser your looking for please comment so I can help you with something else and here how you get the anwser you can break 21 and 23 down so 20 +1 and 20+ 3 then these steps or array.

20x20=400

20x1=20

20x3=60

3x1=3

Now add those numbers together you get 483

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Evaluate the expression when x=1/3 y=-7/4<br><br> 3x+y
Elden [556K]
Answer is -3/4


Start with putting parentheses on the given numbers for these variables
Remove parentheses(When there is a in front of an expression in parentheses, the expression remains the same)
Reduce the numbers with the greatest common factor(3)
Calculate the difference 1 -7/4
Alternative form: -0.75
8 0
2 years ago
The length of a rectangle is 5 units and its width is 4 units. What is the approximate length of the diagonal of the rectangle?
Inessa05 [86]

Answer:

The approximate length of the diagonal of the rectangle = 6.4 units ⇒ B

Step-by-step explanation:

* Lets revise the properties of the rectangle

- The rectangle has 4 sides

- Each two opposite sides are parallel and equal in length

- It has for right angles

- Its two diagonals are equal in length

- The diagonal divide the rectangle into two congruent right triangles

* Now lets solve the problem

∵ The length of the rectangle = 5 units

∵ The width of the rectangle = 4 units

∵ The diagonal of the rectangle with the length and the width formed

  right triangle, the length and the width are its two legs and the

  diagonal is its hypotenuse

- To find the length of the hypotenuse use Pythagoras theorem

∵ Hypotenuse = √[(leg1)² + (leg2)²]

∴ The length of the diagonal = √[5² + 4²] = √[25 + 16] = √41

∴ The approximate length of the diagonal of the rectangle = 6.4 units

6 0
3 years ago
Read 2 more answers
F(x)=3x square + x f(-5)
KatRina [158]

Answer:

If you need the answer as f by simplifying both sides of the equation and then isolating the variable, the answer would be:

xf=\frac{3x^2}{5}-\frac{f(x)}{5}

Or, if you need to evaluate the function itself, the answer would be:

f(x)=3x^2-5xf

8 0
1 year ago
Quadrilateral FGHI is dilated with respect to the origin by a scale factor of 1/3 . What are the coordinates of G’?
qaws [65]
G(9,-3) being dilated by a scale factor of 1/3 is G'(3,-1) so D. All I did was divide the coordinates by 3 and there you go.
3 0
3 years ago
Why is it important to include a scale when displaying a box plot?
KIM [24]
Because then it would be easier to get an answer for a problem
6 0
3 years ago
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