Answer:
The value of y given the values of x and z in the question is -734.85
Step-by-step explanation:
This is a joint variation question.
First, we are made to know that y varies jointly as x and z.
The equation for this can be written as;
y = k * x * z
Where k is the constant of proportionality.
Let’s calculate k first.
117 = k * (-3) * (-11)
33k = 117
K = 117/33 = 3.55
Now, we proceed to get what y is when x = -9 and z = 23
Let’s plug these values into the initial equation written.
y = k * x * z
We use the value of k calculated above;
y = 3.55 * (-9) * (23) = -734.85
Answer:
38.2 %
Step-by-step explanation:
120/100 = 1.2 (average time)
(1.2 - 1.5)/1 = -.3
z table value for "-.3" is .3821
Answer:
328.5 cm
Step-by-step explanation:
Volume= L x W x H
10 x 4.5 x 7.3= 328.5
:))
the length of the fish tank is 
. Correct option is A)
<u>Step-by-step explanation:</u>
Here we have , Peter has just purchased a small rectangular fish tank that holds 910 milliliters of water. The tank has a width of 7 cm and a height of 10 cm. We need to find What is the length of the fish tank . Let's find out:
The fish tank is in the shape of cuboid , and we know that volume of cuboid :
⇒ 
Now , according to question we have following parameters :
Therefore , Putting theses values in above equation we get :
⇒
⇒ 
⇒ 
⇒
Therefore , the length of the fish tank is . Correct option is A)
