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jarptica [38.1K]
3 years ago
7

Simplify by combining like terms. 3(-2y-9)-2y

Mathematics
2 answers:
Klio2033 [76]3 years ago
8 0

Answer: -8y-27

Step-by-step explanation: Simplify the expression.

Hope this helps you out.

Ivanshal [37]3 years ago
8 0

Answer:

-8y-27.

Step-by-step explanation:

3(-2y-9)-2y

= 3*-2y+3*-9 -2y

= -6y-27-2y

= -8y-27.

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PLZ ANSWER QUICK-MATH TRIG
IRISSAK [1]

Answer:

FG = 9.7ft

Step-by-step explanation:

Find the diagram in the attachment.

The diagram is a right angled triangle since one of its angle is 90°

Using SOH CAH TOA to calculate the length FG which is the hypotenuse.

According to SOH

Sin∠G = Opposite/Hypotenuse

To get the ∠G,

∠F+∠H+∠G = 180°

18°+90°+∠G = 180°

∠G = 180°-108°

∠G = 72°

Sin72° = 9.2/FG

FG = 9.2/sin72°

FG = 9.67feet

FG = 9.7ft (to the nearest tenth of a foot)

7 0
3 years ago
In a metal fabrication​ process, metal rods are produced to a specified target length of 15 feet. Suppose that the lengths are n
Leto [7]

Answer:

95% Confidence interval: (14.4537 ,15.1463)

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 15 feet

Sample mean, \bar{x} = 14.8 feet

Sample size, n = 16

Alpha, α = 0.05

Sample standard deviation, σ = 0.65 feet

Degree of freedom = n - 1 = 15

95% Confidence interval:

\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}  

Putting the values, we get,  

t_{critical}\text{ at degree of freedom 15 and}~\alpha_{0.05} = \pm 2.1314  

14.8 \pm 2.1314(\dfrac{0.65}{\sqrt{16}} ) \\\\= 14.8 \pm 0.3463 = (14.4537 ,15.1463)  

is the required confidence interval for the true mean length of rods.

3 0
3 years ago
Read 2 more answers
In 20 years,
Aleksandr-060686 [28]

Answer:

Step-by-step explanation:

i honesty dont know if so i would help

8 0
3 years ago
Select all of the names of this polygon.
Shalnov [3]
Trapezoid
quadrilateral
rhombus
parallelogram
8 0
3 years ago
What is the solution to the system of linear equations graphed below?
OlgaM077 [116]

Option C: There are no solutions

Explanation:

The linear equations is graphed.

We need to determine the solution of the system of equations.

The solution of the equations can be determined by finding the point of intersection of the two equations.

From the figure, it is obvious that the two equations are parallel to each other.

Also, the parallel lines have the same slope and the parallel lines never intersect.

Hence, the system consisting of parallel lines have no solution.

Therefore, the solution to the system of linear equations graphed is no solution.

Thus, Option C is the correct answer.

5 0
3 years ago
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