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NikAS [45]
3 years ago
11

Which value is needed to create a perfect square trinomial from the expression x2 + 8x + _____?

Mathematics
1 answer:
Alecsey [184]3 years ago
4 0
I believe it's +16, if you complete the square you'd have (x+4)^2 - 16 + a = 0 where a is the value you're looking for, so to make this correct you need a = 16
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Describe in a complete sentence the solution set for 3x + 3 = 3+ 3x.
sineoko [7]

Answer:

<em>It has infinitely as many solutions</em>

Step-by-step explanation:

Equations and Identities

When dealing with equations, we must find values of the variable who mak the expression become an identity.

The expression is an identity regardless on what the value of x is, so we can say the equation has infinite as many solutions. For example x=0 will make the expression look like 3=3 which is an identity. If x=8, we'll obtain 27=27 and so on

5 0
2 years ago
A bag with 8 marbles are shown below.What is the probability that they are white or grey
horrorfan [7]

Answer: 2/8

Step-by-step explanation:

The probability that the marbles are white or grey is 2/8 because since there is 2 marbles and the total is 8 so you have a probability of 25% to get white or gray

3 0
3 years ago
35-40 first with the correct answers will get brainliest
serious [3.7K]

Answer:

35.w/g=m

36. P=1/2Q-15

37. R=IV

38. b=-mx+y

39. a) t=-d-e+f

     b) t=19.175

40. No, X=-2.4

Step-by-step explanation:

Explanation for 40:

2(x-4)-4x=-6x+9x+4

first do the parentheses

2x-8-4x=-6x+9x+4

next combine like terms

-2x-8=3x+4

add 2x to each side

-8=5x+4

subtract 4 from each side

-12=5x

divide both sides by 5

x=-2.4

7 0
3 years ago
HELP ME PLEASEE ASAP!!!! PLEASEE
11111nata11111 [884]

Answer:

<h2>25</h2>

Step-by-step explanation:

So there is this property,

Sum of two angle of triangle = exterior angle

So based on this we can form an algebraic equation (NOTE: this is an equilateral triangle so all the sides are 60°)

4x + 20 = 60 + 60 \\ 4x = 120 - 20 \\ 4x = 100 \\ x =  \frac{100}{4}  \\ x = 25

So it's option B.

6 0
2 years ago
A shirt with the cost price $80 was discounted by 10% what is the amount of the discount and what is the discounted price of the
Sophie [7]

Answer:

72.00

Step-by-step explanation:

umm cant really explain

7 0
3 years ago
Read 2 more answers
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