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Alona [7]
4 years ago
15

What is -3 - 9n= 42 I can’t be negative

Mathematics
1 answer:
maw [93]4 years ago
4 0

If you were to correctly simplify this equation, the answer would be a negative.

The answer is: n = -5

Here's how I got my answer:

Step 1: Add 3 to both sides. Which leaves us with -9n=42+3

Step 2: Simplify 42+3 to 45. Which leaves us with -9n = 45

Step 3: Divide both sides by -9. Which leaves us with n = -45/9

Step 4: Simplify -45/9, to get your answer, n = -5.

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Which of these triangle pairs can be mapped to each other using a single translation?
sergeinik [125]

Answer:- D shows the triangle pairs which can be mapped to each other using a single translation.


Explanation:-

Translation is a rigid transformation which creates a congruent image as that of the original figure such that the distance between the each point of the original figure and the image is fixed and same.

The translation mapping is given by (x,y)→(x+h,y+k) ,where h is the distance of the x coordinate of the each point of the original figure to the image and  k is the distance of the y coordinate of the each point of the original figure to the image.

In figure D we can see that the distance between each point of ΔCED is equal to the distance between each point of ΔMPN. Thus it shows  the triangle pairs which can be mapped to each other using a single translation.


4 0
4 years ago
Read 2 more answers
Find the area of triangle ABC. Give your answer correct to 1 decimal place AC=7 Cb=12 a=72 degrees b=59 degrees
Tems11 [23]

Answer:

31.7 cm²

Step-by-step explanation:

The area (A) of the triangle is calculated as

A = \frac{1}{2} absinC

where a, b are the 2 sides given and C the angle between them

∠ C = 180° - (72 + 59)° = 180° - 131° = 49° , thus

A = 0.5 × 12 × 7 × sin49° ≈ 31.7 cm² ( to 1 dec. place )

3 0
3 years ago
Two regular polygons X and Y are such that the number of sides of X is
anyanavicka [17]

Based on the indices of the regular polygons, the number of sides that X has is 8. See the computation below.

<h3>What is the analysis for the above solution?</h3>

Assuming that X has G number of sides; and

Y has H number of sides, this means that:

G-H = 3 ...........1

Recall that the formula for the exterior angles is:

360/n; where n is number of sides

X = 360/G

Y = 360/H

(360/G) + (360/H) = 117°.......2


Solving 1 and 2 simultaneously, we obtain:

G= 8 and

H = 5

Thus, X has 8 sides.

Learn more about Polygons at:
brainly.com/question/1592456
#SPJ1

4 0
2 years ago
Help me pleaseeeeeeee
slamgirl [31]
Slope Formula: m= \frac{ y_{2} }{ x_{2} }  -  \frac{ y_{1} }{ x_{1} }

I am going to show you how to do this on problem 6, and you will do the rest of the problems. 

Here are the steps to solving problem 6

Step 1) Substitute the coordinates into the slope formula

\frac{-1-2}{-18-(-8)}

Step 2) Now Lets simplify the denominator, so we don't have two Subtractions symbols.

\frac{-1-2}{-18+8}

Step 3) Simplify

\frac{-1-2}{-18+8} =  \frac{-3}{-10}

Step 4) We can still simplify more

\frac{-3}{-10} =  \frac{3}{10}

Hope This Helps ... Good Luck

[The reason I didn't do all of them is because you need to know how to do them. Trust me later on knowing these is going to be very handy.]

5 0
3 years ago
X(x^3+4x^2-65x+132)=0
Nonamiya [84]

Answer:

0,3,4,-11

Step-by-step explanation:

7 0
3 years ago
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