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bija089 [108]
3 years ago
5

SIMPLIFY 7x to the power of 2 + 6x + 9x to the power of 2 - 5x

Mathematics
1 answer:
Marizza181 [45]3 years ago
4 0
7x^2+6x+9x^2-5x=(7x^2+9x^2)+(6x-5x)=16x^2+x
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Someone please help me
Lesechka [4]

If these 2 triangles are similar to each other, the corresponding sides have to exist in proportion to one another. The angles would be exactly the same (side length doesn't matter at all!). Going from the bigger triangle to the smaller, KL corresponds to RS; LJ corresponds to SQ; JK corresponds to QR. The ratio of KL:RS is 5:1; the ratio of LJ:SQ is 5:1; the ratiio of JK:QR is 5:1. That means that the sides are all proportionate and the triangles are similar by the SSS postulate. Now that we know that the triangles are similar, we can say that all the corresponding angles are the same by CPCTC but we had to determinte side similiarity first. Your answer is the second choice, SSS

8 0
3 years ago
What is the slope? (5,6) and (-1, 4)
7nadin3 [17]

Answer:

1/3

Step-by-step explanation:

y2-y1/x2-x1

4-6/-1-5

-2/-6

1/3

3 0
3 years ago
Read 2 more answers
What is the value of x? 0.9(x+1.4)−2.3+0.1x=1.6
mash [69]
Expand

Simplify 0.9x + 1.26 - 2.3 + 0.1 * x to x - 1.04

add 1.04 to both sides 

simplify 1.6 + 1.04 to 2.64

Answer: x = 2.64
5 0
3 years ago
Read 2 more answers
A two-factor research study has 2 levels of factor A and 3 levels of factor B with a separate sample of n = 5 subjects in each t
amid [387]

Answer:

option (b) df = 1, 24

Step-by-step explanation:

Data provided in the question:

levels of factor A, a = 2

levels of factor B, b = 3

Subjects in each Sample, s = 5

n = 5 × 3 × 2 = 30

Now

df for Factor A = a - 1

= 2 - 1

= 1

df for Factor B = b - 1

= 3 - 1

= 2

df for Interaction AB = ( a - 1 ) × ( b - 1 )

= 1  × 2

= 2

df for Total = n - 1

= 30 - 1

= 29

df for error = 29 - 5

= 24

Hence,

df values for the F-ratio evaluating the main effect of factor A is 1, 24

The correct answer is option (b) df = 1, 24

6 0
3 years ago
A spinner with 8 equal parts, labeled 1 to 8, is used in a board game. you spin the spinner one time. what is the theoretical pr
stiks02 [169]

Answer:

1 in 8; or 12.5% of the time

Step-by-step explanation:

There are eight outcomes. One of eight of those outcomes is a 2.

1/8 = 0.125

5 0
3 years ago
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