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KonstantinChe [14]
3 years ago
12

Evaluate expressions 9+11g-4h g=2 h=7

Mathematics
1 answer:
UNO [17]3 years ago
6 0
The given expression is :
9 + 11g - 4h. 

substitute h=7 and g = 2 in given expression, 

9 + 11(2) - 4(7) = 3. 

Hope this helps!
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A person bought some cosmetics from wholesale market at the rate of Rs 360 per dozen he sells it at Rs 80 a pair find the gain p
marusya05 [52]

Answer:

33.33%

Step-by-step explanation:

We need to calculate the <u>unit selling price and cost of each cosmetics.</u>

If a person bought some cosmetics from wholesale market at the rate of Rs 360 per dozen., then for 1 cosmetics, we will say;

x = 1 cosmetic

since 360 = 12 cosmetic

cross multiply

12x = 360

x = 360/12

x = 30

Hence the unit cost price of the cosmetics will be Rs. 30

Similarly, if he sells it at Rs 80 a pair, then he sold one cosmetic at 80/2 = Rs. 40 (a pair is 2 cosmetics)

Selling price per unit = Rs. 40

Cost price per unit = Rs. 30

percent gain = SP-CP/CP * 100%

percent gain = 40-30/30 * 100

percent gain = 10/30 * 100

percent gain = 100/3

percent gain = 33.33%

Hence the percentage gain is 33.33%

5 0
3 years ago
Shaun's savings can be modeled by the regression equation y = 6x^2 + 75x+200. Which of the following is the best prediction for
kipiarov [429]

Answer:

Option D

Step-by-step explanation:

The equation to predict the amount saved is

y = 6x ^ 2 + 75x + 200.

Assuming that the variable x represents the saving months, then substitute x = 25 in the quadratic equation and solve for y.

y = 6 (25) ^ 2 +75 (25) +200\\\\y = \$\ 5,825

The answer is the option D  $5,825

3 0
3 years ago
Mrs Thomas played a game. Her score changed the same amount each round. After 3 rounds, her score had changed by -18 points. How
lisabon 2012 [21]

Answer: -6

Step-by-step explanation: It changed -6 each round because -6x3=-18.\

Hope this helped!

5 0
3 years ago
Calculate the sum of each expression. Arrange the expressions in the order of their value from largest to smallest.
RideAnS [48]

Answer:

6

Step-by-step explanation:

3 0
1 year ago
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If every student is independently late with probability 10%, find the probability that in a class of 30 students: a) nobody is l
gladu [14]

Answer:

a) 4.2%

b) 14.1%

Step-by-step explanation:

a) 0.9³⁰ = 0.0423911583

b) 30C1 × 0.1 × 0.9²⁹ = 0.1413038609

5 0
3 years ago
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