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Mekhanik [1.2K]
3 years ago
6

Set up an equation (part + part = whole). Solve the equation to find the value of x. 10 + x + x + 20 = 12

Mathematics
1 answer:
Licemer1 [7]3 years ago
3 0

Answer:

x is equal to -9 thus it becomes -18 in the whole setup

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8. Solve the system using elimination.<br> 3x - 4y = 9<br> - 3x + 2y = 9
olga nikolaevna [1]

Answer:

3x−4y=9 −3x+2y=9

Add these equations to eliminate x: −2y=18

Then solve−2y=18

for y: −2y=18 −2y −2 = 18 −2 (Divide both sides by -2)

y=−9

Now that we've found y let's plug it back in to solve for x.

Write down an original equation: 3x−4y=9

Substitute−9for y in 3x−4y=9: 3x−(4)(−9)=9

3x+36=9(Simplify both sides of the equation)

3x+36+−36=9+−36(Add -36 to both sides)

3x=−27 3x 3 = −27 3 (Divide both sides by 3) x=−9

Answer: x=−9 and y=−9

Hope This Helps!!!

4 0
3 years ago
Which function is not defined at 0? Please help urgent
Vlada [557]

Answer:

b and g

Step-by-step explanation:

a. is y = 0³ = 0

b. is y = ln(0), which is undefined because ln(x) is only defined for x > 0

c. is y = 1 / (1 + e^-0) = 1 / (1 + 1) = 1/2

d. is y = 0

e. is y = 0² = 0

f. is y = sin(0) = 0

g. is y = 1/0, which is undefined because division by 0 is undefined

h. is y = e^0 = 1

i. is y = |0| = 0

j. is y = √0 = 0

7 0
3 years ago
Write an equation in point-slope form (4,-3) (2,-9)
Tom [10]

Answer:

m = 3

Step-by-step explanation:

Try using Symbolab, I use it all the time it gives the correct answer and it gives good explanations.

8 0
3 years ago
Curtis threw 15 darts at a dartboard.40% of his darts hit the bull’s eye.how many darts not hit the bulls eye?
Harlamova29_29 [7]

Answer:

9

Step-by-step explanation:

The number of darts that failed to hit the bulls eye is 40% of 15 subtracted from 15

Since 40% of the darts hit the bulls eye .

Therefore

40% of 15

40/100 x 15

0.4 x 15

6

This means that 6 darts hit the bulls eye.

Therefore,number of darts that did not hit the bulls eye is

15 - 6 = 9

9 darts failed to hit the bulls eye

7 0
3 years ago
Y= - 1 / 4 x + 8<br> its for math 8 thanks yall :)
Mandarinka [93]

Answer:

x =-4y+32

Step-by-step explanation:

<u>Calculations:</u>

y=-\frac{1}{4} x+8

y-8=-\frac{1}{4}x

x =-4y+32

8 0
3 years ago
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