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Evgen [1.6K]
3 years ago
12

What is the value of 9x - 4y if x = 3 and y = 2?

Mathematics
2 answers:
nordsb [41]3 years ago
5 0

Answer:

19

Step-by-step explanation:

stellarik [79]3 years ago
5 0

Answer:

19

Step-by-step explanation:

27-8

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Solve for the unknown angle measures of the polygon. The measures of 13 of the 14 angles of a 14−gon add up to 2,040°. What must
Jet001 [13]

Answer: The measure of fourteenth angle is 120°.

Step-by-step explanation:

Since we have given that

Total number of angles in 14 gon = 14

Sum of measures of 13 angles = 2040°

As we know that sum of all angles in 14 gon would be

(14-2)\times 180^\circ\\\\=12\times 180^\circ\\\\=2160^\circ

So, the measure of fourteenth angle would be

\sum_{x=1}^{13}+x_{14}=2160^\circ\\\\2040^\circ+x_{14}^\circ=2160^\circ\\\\x_{14}^\circ=2160-2040\\\\x_{14}^\circ=120^\circ

Hence, the measure of fourteenth angle is 120°.

6 0
3 years ago
A student concluded that the solution to the
Nesterboy [21]
<h3>Answer:</h3>

isr=-2. No, i dont agree the student forgot the negative and forgot to dicide the 2 so that the x is by its self.

<h3>Steps:</h3>

first you have to get the 2x by its self.

2x+1+3=0

-1. -1

-3. -3

2×=-4

÷2 ÷2

<h2 />
5 0
3 years ago
Write a formula for the general term or nth term for the sequence. Then find the indicated term. three fourths comma three sixte
Alexxandr [17]
Sequence: 3/4, 3/16, 3/64, 3/256
a8=?
a1=3/4
a2=3/16
a3=3/64
a4=3/256

a2/a1=(3/16)/(3/4)=(3/16)*(4/3)=4/16=1/4
a3/a2=(3/64)/(3/16)=(3/64)*(16/3)=16/64=1/4
a4/a3=(3/256)/(3/64)=(3/256)*(64/3)=64/256=1/4
a2/a1=a3/a2=a4/a3=r=1/4

an=a1*r^(n-1)
an=(3/4)*(1/4)^(n-1)
an=(3/4)*(1)^(n-1)/(4)^(n-1)
an=(3/4)*(1/4^(n-1))
an=(3*1)/[4*4^(n-1)]
an=3/4^(1+n-1)
an=3/4^n

n=8→a8=3/4^8
a8=3/65,536

Answers:
The general term or nth term for the sequence is: an=3/4^n
a8=3/65,536
3 0
3 years ago
Ayden evaluated the expression a ÷ (2 + 1.5) for a = 14. He said that the value of the expression was 8.5. Select all the statem
laiz [17]

Answer:

Jayden's solution is incorrect.

Jayden divided 14 by 2 and then added 1.5

Jayden substituted the wrong value for a.

6 0
3 years ago
MATHS QUESTION <br> Any help for another maths questions I just don't get what to do thank you ❤
levacccp [35]
Look at the picture.

a) 180° - 45° = 135°


b) Use trigonometric function

\tan(\angle DBA)=\dfrac{45}{30}\\\\\tan(\angle DBA)=1.5\\\\m\angle DBA\approx56^o

270° - 56° = 214°


4 0
3 years ago
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