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3241004551 [841]
3 years ago
8

2.7squared add 3.9squared to one decimal place

Mathematics
1 answer:
katrin [286]3 years ago
5 0
2.7^2=2.7\cdot2.7=7.29\\\\3.9^2=3.9\cdot3.9=15.21\\\\2.7^2+3.9^2=7.29+15.21=\boxed{22.50=22.5}
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???????anyone know...
RUDIKE [14]
The answer is:  " 60° " .
__________________________________________________________
     " m∠A = 60° " .
__________________________________________________________
Explanation:
__________________________________________________________

Note:  All triangles, by definition, have 3 (three) sides and 3 (three angles).

The triangle shown (in the "image attached") has three EQUAL side lengths.   Therefore, the triangle shown is an "equilateral triangle" and has 3 (three) equal angles, as well.

All triangles by, definition, have 3 (three) angles that add up to "180° " .

Since each of the 3 (three) angles is equal;  and the three angles are:  

  "∠A" , "∠B" , and "∠C" ;

We can find the measure of "∠A" ; denoted as:  "m∠A" ; as follows:
______________________________________________________
    m∠A  = 180° ÷ 3 = 60° .
______________________________________________________
The answer is:  " 60° " .
______________________________________________________
   m∠A = " 60° " .
______________________________________________________
7 0
3 years ago
bobby hopes that he will some day be more than 70 inches tall. he is currently 61 inches tall how many inches , x , does bobby n
leonid [27]
10 inches would make him taller than 70, 9 inches would make him exactly 70
7 0
3 years ago
Evaluate the expression for x=5
garri49 [273]

Answer:

There is not enough here to answer this problem

Step-by-step explanation:

Sorry : (

3 0
3 years ago
Use the graphing method to solve the equation 5(1/2)^x=30 Round to the nearest thousandth
Daniel [21]

Answer:

x = -2.585

Step-by-step explanation:

You will have to plug this into your graphing calculator.

In y=, type 5(1/2)^x in the Y1 and type 30 in Y2.

When you hit 2nd trace and hit find intersections, you will get (-2.585, 30).

The answer is x = -2.585

5 0
3 years ago
Solving linear system, substitution<br><br> 20x-30y=-50<br> x+2y=1<br><br> HELP PLEASE
hjlf
20x -  30y = -50 ⇒ 20x -  30y = -50
    x +   2y = -1   ⇒ <u>20x + 40y = -20</u>
                                       <u>-70y</u> = <u>-30</u>
                                        -70     -70
                                            y = ³/₇
                           20x - 30(³/₇) = -50
                             20x - 12⁶/₇ = -50
                             <u>      + 12⁶/₇  + 12⁶/₇
</u>                                        <u>20x</u> = <u>47¹/₇
</u>                                         20<u />       20<u>
</u>                                            x = 2⁷/₂₀
                                      (x, y) = (2⁷/₂₀, ³/₇)
6 0
3 years ago
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