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trapecia [35]
3 years ago
13

Solve for x: show your work 7x=-2

Mathematics
2 answers:
Roman55 [17]3 years ago
8 0
X = -2/7 is the answer

7x = -2
7x/7 = -2/7
x = -2/7
please mark me as brainliest tnx
Kamila [148]3 years ago
3 0
7x = -2

7x/7 = -2/7

X = -2/7 

(install Socratic on your phone)


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What us the measure of the missing angle?
kow [346]

Answer:

None of them

Step-by-step explanation:

Because 30+135+45 add up to 210 then if you add 30, or 45 degrees it will be more than 180 degrees. If you subtract -15 from 210 you will get 195 which is still not right. So the best  answer is none of the above

Hope this helps

8 0
3 years ago
What's the depth of 5cm
nordsb [41]

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what?

Step-by-step explanation:

7 0
2 years ago
5/4+5/4=_ × 1/4 plz help me​
Tanya [424]

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10/4

Step-by-step explanation:

4 0
3 years ago
(!!WORD PROBLEM!!)
Ivan

Answer: a package of cookies cost $ 5 and each bag of chips cost $5

Step-by-step explanation:

Let x represent the cost of a package of  cookies and y represent the cost of a bap of chips ,then from the first statement :

4x + 4y = 40

dividing through by 4 , we have

x + y = 10 ........................... equation 1

From the second statement

3x + 5y = 40  ..................... equation 2

Solving the system of linear equation by substitution method , from equation 1 , make x the subject of the formula , that is

x = 10 - y ................... equation 3

substitute x = 10 - y into equation 2 , we have :

3 (10 - y ) + 5y = 40

30 - 3y + 5y = 40

30 + 2y = 40

subtract 30 from both sides

2y = 40 -30

2y = 10

y = 5

substitute y = 5 into equation 3 , equation 3 becomes

x = 10 - 5

x = 5

Therefore ; a package of cookies cost $ 5 and each bag of chips cost $5

5 0
3 years ago
Help help help help thanks lol
riadik2000 [5.3K]
f(x)=x^2-81\\
y=x^2-81\\
x^2=y+81\\
x=\pm \sqrt{y+81}\\
f^{-1}(x)=\pm \sqrt{x+81}\\

f(x)=2x-6\\
y=2x-6\\
2x=y+6\\
x=\dfrac{1}{2}y+3\\
f^{-1}(x)=\dfrac{1}{2}x+3\\
f^{-1}(2)=\dfrac{1}{2}\cdot2+3\\
f^{-1}(2)=1+3\\
f^{-1}(2)=4
5 0
3 years ago
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