23 hours and 20 minutes I think. We already know that it takes him 21 hours to paint 9 rooms, so I multiplied 60 by 7 and got 420. I divided 420 by 3 and got 140. Which is 2 more hours and 20 minutes. Idk if it’s right but I tried
Answer is 10
Step-by-step explanation:
Subtract
1
from
2
.
16
⋅
1
2
+
2
Multiply
16
by
1
.
16
2
+
2
Divide
16
by
2
.
8
+
2
Add
8
and
2
.
10
The sides of the triangle are 20 in, 48 in and 52 in
<u>Explanation:</u>
Given:
Let x be the length of smaller leg
Hypotenuse, H = x + 32
Height, h = x + 28
Length of the sides of a triangle = ?
If the triangle is a right angle triangle then we use pythagoras theorm to solve the question.
So,
(Hypotenuse)² = (height)² + (Base)²
(x + 32)² = (x + 28)² + (x)²
x² + 1024 + 64x = x² + 784 + 56x + x²
240 + 8x - x² = 0
x² - 8x - 240 = 0
Solving the quadratic equation:
x² + 12x - 20x - 240 = 0
x(x+12) - 20(x+12) = 0
(x-20) (x+12) = 0
(x-20) = 0
x = 20 in
Hypotenuse, H = x + 32
H = 20 + 32 in
H = 52 in
Height, h = x + 28
h = 20 + 28 in
h = 48 in
Therefore, the sides of the triangle are 20 in, 48 in and 52 in
Replace x in the equation with 3.5 and do the arithmetic.
y = 1.3*3.5 -0.52
y = 4.55 -0.52
y = 4.03
The predicted approximate value of y is 4.03.
0.10 m of difference <span>in water levels between Week 2 and Week 4</span>