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choli [55]
3 years ago
12

Evaluate. (jk−1)÷j when j=−4 and k=−0.7 Enter your answer as a decimal in the box.

Mathematics
1 answer:
Helga [31]3 years ago
5 0

Answer:

(jk - 1) / j

jk = (-4 x -0.7) = 2.8

(2.8 - 1) / - 4

1.8 / -4 = -0.45

Answer is -0.45 when j = -4 and k = -0.7

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C2d3 has a solubility product constant of 9.14×10−9. what is the molar solubility of c2d3?
UkoKoshka [18]
The correct answer for the question that is being presented above is this one:

We need to express the ksp expression of C2D3
<span>C2D3
= (2x)2(3x)3
= 108x5 </span>

<span>Then set that equation equal to your solubility constant </span>

<span>9.14x10-9 = 108x5 </span>
<span>x = 9.67x10-3 
</span>
<span>So the molar solubility is 9.67x10-3</span>
4 0
3 years ago
state if the triangles in each pair of similar. If so, State how you know that they are similar and complete the similarity stat
iragen [17]

Answer:

Similar, AA similarity, ΔAKL

Step-by-step explanation:

BC and KL are parallel.  Therefore, ∠B and ∠K are alternate interior angles, and ∠C and ∠L are also alternate interior angles.  Alternate interior angle are congruent, so by AA similarity, ΔABC ~ ΔAKL.

4 0
3 years ago
It cost $10.50 to buy 3 medium pizzas. How much does it cost to buy 10 medium pizzas?
melomori [17]
It would cost $35 because 10.50 divided by 3 = 3.5x10=35

5 0
3 years ago
Read 2 more answers
if the line AB with A(-1,5) and B(3,7) is perpendicular to the line CD WITH C(7,11) AND D(X,23). THEN X=?​
MissTica

Answer:

x=1

Step-by-step explanation:

slope AB = (7-5) / (3 - -1) = 2 / 4 = 1/2

slope CD = (23-11) / (x-7) = 12 / (x-7)  

12 / (x-7) = - 2  ... perpendicular to AB slope 1 = - 1/slope 2

-2 (x-7) = 12

-2x + 14 = 12

-2x = -2

x = 1

5 0
3 years ago
What is the value of this expression?30-5*4+2
Anna35 [415]
30 - 5*4 +2 = 12 
30 - 20 +2  = 12
10+2           = 12
12               = 12
6 0
3 years ago
Read 2 more answers
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