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Mnenie [13.5K]
2 years ago
9

Simplify the expression (9n+ 4)-(-1/2n-7)

Mathematics
1 answer:
Lelu [443]2 years ago
5 0

Answer:

9 1/2n + 11

Step-by-step explanation:

9n + 1/2n + 4 + 7

9 1/2n + 11  or 19/2n + 11

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Given sin (-∅) = -1/4 and tan∅ = √15/15.<br> What is the value of cos∅?
Ket [755]
Cos (theta) would be equal to 15/-1!

The reason is because the inverse of sin is equal to the hypotenuse over the opposite angle, meaning the hypotenuse would be -1. Tan is equal to the opposite over the adjacent angle, meaning the adjacent angle equals 15. Cos is equal to the adjacent over the hypotenuse, making cos (theta)= 15/-1!
4 0
3 years ago
Henry made 200 tarts. He sold 5 of them and gave 4 of the remainder to
yaroslaw [1]

Answer:

191

Step-by-step explanation:

200 minus 4 and five equal 191

4 0
3 years ago
What are the possible rational zeros of f(x)=x^4+2x^3-3x^2-4x+20?
Mice21 [21]
Roots test tells us to take the factors of the 20 divided by the factors of the coefficient of the the first.  

factors of 20 are 1,2,4,5,10,20
factors of 1 are 1

so plus or minus 1/1, 2/1, 4/1, 5/1, 10/1, 20/1 are all possible rational zeros
8 0
4 years ago
Figure A is a scale image of Figure B. What is the value of x?
kari74 [83]

Hey there! :)

Answer:

x = 21 units.

Step-by-step explanation:

Since we know Figure A is just Figure B scaled, we can set up a proportion:

\frac{45}{35}= \frac{27}{x}

Cross multiply to solve for x:

45 · x = 35 · 27

45x = 945

Divide both sides by 45:

x = 21 units.

4 0
3 years ago
Rob notices that 55 percent of the people leaving the supermarket chhose plastic bags instead of paper bags. out of 600 people,
Bumek [7]
To solve this answer, you are trying to find 55% of 600, because that is the number of people who chose plastic bag.

55% can be re-written as 55/100 OR 0.55 since percentages are always out of 100.

So, we do 0.55*600, which gives us 330. 330 people carry plastic bags.
5 0
3 years ago
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