Answer:
The statement is as follows:
Explanation:
We had better avoid such correlated subqueries by instead using aggregation with GROUP BY:
SELECT
c.email_address,
COUNT(DISTINCT o.order_id) AS num_orders,
COALESCE(SUM(oi.quantity * (oi.item_price - oi.discount_amount)), 0) AS total_amount
FROM customers c
LEFT JOIN orders o
ON c.customer_id = o.customer_id
INNER JOIN order_items oi
ON o.order_id = oi.order_id
GROUP BY
c.customer_id,
c.email_address;
Given:
Wall's inside temperature, 
Room air temperature, 
Solution:
To calculate percentage max relative humidity, we make use of steam table for saturated pressure of wall and air:
From steam table:
At
:

At
:

Now,


(RH)_{max} = 68.58%
Therefore, max Relative Humidity of the air before the occurrence of condensation in wall is 68.85%
Answer:
aluminum bar carrying a higher load than steel bar
Explanation:
Given data;
steel abr
diameter = 5 mm
stress = 500 MPa
aluminium bar
diameter = 10 mm
stress = 150 MPa
we know
stress = laod/area
for steel bar

solving for P
P = 9817.47 N
for Aluminium bar

solving for P
P = 11790 N
aluminum bar carrying a higher load than steel bar
Given that the correct question is
Write Python expressions using s1, s2, and s3 and operators + and * that evaluate to: (a) 'ant bat cod'
Answer:
s1 = 'ant'
s2 ='bat'
s3 ='cod'
#using string concatenation
s4 = s1 + ' ' + s2 + ' ' +s3
print(s4)