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3 years ago

What is the distributive property to write 8(x + 7)

Mathematics

2 answers:

Andrej [43]3 years ago

8 0

Answer: 8x+56

Step-by-step explanation:

you multiply (x+7) times 8

hammer [34]3 years ago

3 0

Answer:

8x+56

Step-by-step explanation:

You distribute the 8 over x and 7, so it would be 8*x+8*7=8x+56

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How many times does the equation f(x)=2x^2+9x-5 intersect the x-axis

Komok [63]

Answer:

Step-by-step explanation:

f(x)=2x^2+9x-5

When we are find how many times it intersects the x axis, we are finding the zero's. Set the equation equal to zero

0=2x^2+9x-5

Factor the equation

0 = (2x+1) (x-5)

2*1

1*-5 = -5

2*-5 +1*1 = -9

This checks for the first last and middle terms so we factored correctly

Then using the zero product property

2x+1 = 0 and x-5 =0

2x = -1 x=5

x = -1/2 and x=5

This function crosses the x axis 2 times

8 0

3 years ago

Are the triangles similar? How do you know? A. yes, by SAS B. yes, by SSS C. yes, by AA D. no

WARRIOR [948]

No, because 30.4+84.6+66=181
the sum of a triangle=180
so they are not similar.

4 0

3 years ago

Read 2 more answers

Please help! It would be very much appreciated :)

Trava [24]

Answer:

Cos 45=6/x

x=6/cos 45=6√2

x=6√2

tan 45=y/6

y=tan45 ×6

y=6

sin 60=y/10

y=sin60×10

y=5√3

again

Cos 60=x/10

x=½×10

x=5

Sin 45=x/5

x=1/√2×5 or

x=5√2/2

again

y=5√2/2 or 5/√2[base angle of right angled isosceles triangle]

Sin 30=8/x

½×x=8

x=8*2

x=16

again

cos 30= y/x

√3/2×16=y

y=8√3

sin 60=7/x

x=7/[√3/2]

x=14/√3 or 14√3/3

again

cos 60=y/x

½×14√3/3=y

7√3/2=y

y=7√3/2

Note:

Sin angle =perpendicular/hypotenuse

Cos angle =base/hypotenuse

Tan angle =perpendicular /base

7 0

2 years ago

The seventh grade class is putting on a variety show to raise money. It cost $700 to rent the banquet hall that they are going t

tatuchka [14]

Well because they want 1000 dollars profit they need the inequality "15x is greater than or equal too 1700 dollars" But overall if you divide 1700 by 15 and round up on the decimal you get 114. So 114 is your answer.

4 0

3 years ago

Whats the probability of a five card straight in poker without replacement

Ad libitum [116K]

Answer:

one fifth of a chance

Step-by-step explanation:

6 0

3 years ago