3 years ago

If x represents a number, then write an expression for three times the sum of x and 10

Mathematics

1 answer:

Amanda [17]3 years ago

4 0

The expression would be (x+10)3 or 3(x+10)

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Find one value of xxx that is a solution to the equation (2x+3) 2 −6x−9=0

vesna_86 [32]

(2x+3) ^2 −6x−9=0

(2x+3) (2x+3) −6x−9=0

Foil

4x^2 +6x+6x+9-6x-9=0

4x^2 +12x+9-6x-9=0

Combine like terms

4x^2 +6x=0

factor out 2x

2x(2x+3)=0

2x=0 2x+3=0

x=0 2x=-3

x=-3/2

Answer x=-3/2, 0

3 0

3 years ago

X^2 + 6x +15=0 solve the equation using the quadratic formula

gladu [14]

I hope this helps you

6 0

3 years ago

Please help! Worth 36 points!

CaHeK987 [17]

Answer:

a. Same Side Interior Angles

b. Corresponding Angle

c. Alternate Exterior Angle

d. Alternate Interior Angles

e. 20

f. 70

Step-by-step explanation:

e. Corresponding angle add up to 90 degrees. Which you have to subtract 110 to 90 and is 20

f. same side interior angle adds up to 180 degrees. Which you have to subtract 180 to 110 and it is 70

6 0

3 years ago

students who failed mathematics scored the following marks 16.5,13.6,12.4,13.7 find the average mark for this students

SSSSS [86.1K]

Answer:

16.5+13.6+12.4.17.7= 60.2

60.2÷4 =15.05

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3 years ago

Enter the exact product of 5.21 •7.3.

frez [133]

Answer:

3.033

Step-by-step explanation:

5.21*7.3=3.003

6 0

3 years ago

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