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dusya [7]
2 years ago
10

Simplify the expression -4(-10 + 2n)

Mathematics
1 answer:
tangare [24]2 years ago
4 0

Answer:

40-8n

Step-by-step explanation:

We distribute the -4 over to the values in the parenthesis to get 40-8n.

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If sin 0 = 15/17 use pythagorean identity to find cos 0
Inga [223]
Hello : 
sin<span>θ = 15/17
</span> use pythagorean identity : cos²θ +sin² θ = 1 
cos²θ =  1 - sin² θ
cos²θ = 1-(15/17)² 
cos²θ = 1- 225/289
cos²θ = 64/289
cos²θ = (8/17)²
cosθ = 8/17 or -8/17
8 0
2 years ago
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Jade buys a blouse and a skirt for 3/6 of their original price. Jade pays a total of $31 for the two items. If the original pric
Damm [24]

Answer:

3/4 times 18= 13.5

31.5-13.5=18  

It cost 18 dollars for the skirt with a discount.

It cost 13.5 for the blouse as opposed to the original price of 18 dollars.

18(skirt)+13.5(blouse)=31.5

If you set up a proportion to find the original price of the skirt you will get the answer.  

18/x=75/100

75x=18 times 100

75x=1800

75x/75=1800/75

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The original price of the skirt is 24 dollars.

Step-by-step explanation:

4 0
3 years ago
A nest of ants has been growing exponentially in such a way that it's population,P, as a function increasing on average more or
ivolga24 [154]

Not sure question is complete, assumptions however

Answer and explanation:

Given the above, the function of the population of the ants can be modelled thus:

P(x)= 1600x

Where x is the number of weeks and assuming exponential growth 1600 is constant for each week

Assuming average number of ants in week 1,2,3 and 4 are given by 1545,1520,1620 and 1630 respectively, then we would round these numbers to the nearest tenth to get 1500, 1500, 1600 and 1600 respectively. In this case the function above wouldn't apply, as growth values vary for each week and would have to be added without using the function.

On one hand, the function above could be used as an estimate given that 1600 is the average growth of the ants per week hence a reasonable estimate of total ants in x weeks can be made using the function.

7 0
3 years ago
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pav-90 [236]

d) x=-12 because x/-3=4 can be rearranged as x=4x-3 so x=-12

7 0
3 years ago
I need help on this and if you the first person to answer this correctly then I would mark you BRANILIST​​​
lesantik [10]

Answer:

60

Step-by-step explanation:

8 0
2 years ago
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