Answer: 19
Step-by-step explanation:
The angles are supplementary, so

Answer:
585m³
Step-by-step explanation:
Multiply all of the numbers together
13 × 5 × 9 = 585
X^2+7x+49/4=-11+49/4
(X+7/2)^2=5/4
X=-9/4
<h2>
- - - - - - - - - - - - - - - - - - </h2><h3>

</h3><h3>Let's take the missing number as x.</h3>
<h3>

</h3><h3>Means = Extremes </h3><h3>

</h3><h3>

</h3><h2>___</h2><h3>(Cancel by 2 table)</h3><h3>

</h3><h2>___</h2><h3>(Cancel by 5 table, So that we cancel 5 in the denominator and numerator)</h3><h3>

</h3><h2>
- - - - - - - - - - - - - - - - - -</h2>
<h2>
Therefore, The missing number is 4. </h2>
Answer:
4
Step-by-step explanation:
use the Pythagoras' theorem
formula for an ABC triangle( right angled)
AB is height
BC is hypotenuse
CA is length
=
+ 
in your case
AB is 7
BC is 8
CA is unknown so we write x
=
+
64=49+
64-49=
15=
=x
3.87=x
4=x