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mart [117]
2 years ago
12

I ONLY NEED THE CHECK PART PLEASEEEE HELP ASAPPP i’ll mark brainliest !!!

Mathematics
2 answers:
inysia [295]2 years ago
7 0

Answer:

x=-10

Step-by-step explanation:

(3x+2)/4=-7

3x+2=4×-7

3x=-28-2

3x=-30

x=-10

PolarNik [594]2 years ago
4 0

Answer:

\frac{3(-10) + 2}{4}  = \frac{-30 + 2}{4} = \frac{-28}{4} = -7

Step-by-step explanation:

<u>Solve:</u>  

3x+2 = 4(-7)

3x+2 = -28

3x = -30

x = -10

<u>Check:</u>

\frac{3(-10) + 2}{4}  = \frac{-30 + 2}{4} = \frac{-28}{4} = -7

To check your answer to an equation, just plug your answer in place of x, and see if you get the same answer as the original equation.

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Answer please i will give brainliest
il63 [147K]

Step-by-step explanation:

a.

simply add both equations

x + y = 2

-3x - y = 5

----------------

-2x + 0 = 7

x = -7/2

x + y = 2

-7/2 + y = 2

y = 2 + 7/2 = 4/2 + 7/2 = 11/2

b.

1/2 x + 2y = -13

x - 4y = 8

first multiply the first equating by 2

x + 4y = -26

x - 4y = 8

--------------------

2x + 0 = -18

x = -18/2 = -9

x - 4y = 8

-9 - 4y = 8

-4y = 17

y = -17/4

7 0
2 years ago
john is a proud owner of a herd of cows 12 of them are brown and 32 are black what is the ratio of brown cows to the total numbe
Burka [1]

Answer:

12:44, or if simplified 3:11

Step-by-step explanation:

In mathematics, a ratio indicates how many times one number contains another. For example, if there are eight oranges and six lemons in a bowl of fruit, then the ratio of oranges to lemons is eight to six (that is, 8∶6, which is equivalent to the ratio 4∶3). Similarly, the ratio of lemons to oranges is 6∶8 (or 3∶4) and the ratio of oranges to the total amount of fruit is 8∶14 (or 4∶7).

6 0
2 years ago
Read 2 more answers
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Answer:

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Step-by-step explanation:

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2 years ago
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Plzzz help asapppppp what is the inverse of f if f(x)=^3 sqrt x-5
jasenka [17]

Hello from MrBillDoesMath!

Answer:

The first choice, y = x^3 + 5


Discussion:

Let

y = (x-5) ^ (1/3)

To find the inverse, sway x and y and then solve for y:

x = ( y - 5 )^(1/3)         =>             cube both sides

x^3 = y - 5                  =>             add 5 to both sides

x^3 + 5 = y


So the inverse is  x^3 + 5, which is the first choice


Thank you,

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3 years ago
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UkoKoshka [18]
In Binomial distribution, the expected value or mean is given by,
E(X) = np 
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