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Veseljchak [2.6K]
3 years ago
7

Twice a number, decreased by nineteen

Mathematics
2 answers:
anzhelika [568]3 years ago
5 0
2n-19 I think is the answer :3
sasho [114]3 years ago
5 0
2x-9 just as the other one said I prefer to use x as a variable when they say of a number I learned this last month it is rly easy once you get used to it
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A group of hikers buys 8 bags of mixed nuts. Each bag contains 3 and 1/2 cups of mixed nuts. the mixed nuts are shared evenly am
nika2105 [10]

Answer:

2 1/3 cups for each hiker

Step-by-step explanation:

8bags x 3.5 cups in each bag =28 cups in total
28 cups shared among 12 hikers = 28/12 = 2 1/3 cups for each hiker

4 0
2 years ago
If 180°<θ<270°, and sin⁡θ=−3/4, what is the value of sin(−θ)?
Oxana [17]

Answer:

sin(-\theta)=\frac{3}{4}

Step-by-step explanation:

Given:

180°<θ<270° and sin(\theta)=-\frac{3}{4}

We know for any angle \theta,

sin(-\theta)=-sin(\theta)

∴sin(-\theta)=-(-\frac{3}{4})=\frac{3}{4}

5 0
3 years ago
Use diagrams or the description of equivalent ratios to show thay 2:3,4:6, and 8:12 are equivalent
VikaD [51]
So
lets say we have
a/b=2a/2b
we know that if we invert one and multiply it by the other (divide them), we get 1 because a/a=1 where a=a

so
2/3 and 4/6 are equivelent because if you divide them we get 12/12=1

2/3 and 8/12 are equivilent because if you divide them we get 24/24=1

and sinde 2/3=4/6 and 2/3=8/12, 2/3=4/6=8/12

they are equivlent
6 0
2 years ago
Identify the like terms in the expression. -3x^2+3x-x^2-2+6x
ololo11 [35]

like terms: -3x^2, -x^2

and 3x, 6x

6 0
3 years ago
Write an equation in point-slope form of the line having the given slope that contains the given point. then graph the line
Natali5045456 [20]

Answer:

y=-\frac{5}{3}x-3

Step-by-step explanation:

Equation of straight line in point slope form is given a s

(y-y_1)=m(x=x_1)

Here

m=-\frac{5}{2}  \ and\  (x_1, y_1)=(0, -3)

(y+3)=-\frac{5}{3}(x-0)

y=-\frac{5}{3}x-3

6 0
2 years ago
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