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Marrrta [24]
2 years ago
10

Write an equation that has x=3 as a solution

Mathematics
2 answers:
Damm [24]2 years ago
8 0

Answer:

(3x + 5)/2 = 7

Step-by-step explanation:

If you substitute 3 for x, you get the equation:

(3(3) + 5)/2 = 7

(9 + 5)/2 = 7

14/2 = 7

Ira Lisetskai [31]2 years ago
8 0

Answer: Infinite

Step-by-step explanation:

well a lot things can equal x=3

There are many examples so 2x=4x-6 or 3x=4x-3 or 1000x=2000x-3000 would all equal to x=3

You might be interested in
If Free Yer Assets Bank (FYAB) will give you 0.25% compounded quarterly and I.M.A.Q.T.π bank will give you 0.23% interest compou
ivann1987 [24]

Answer:

FYAB gives a better deal.

Step-by-step explanation:

Compound interest:

A = P(1 + \dfrac{r}{n})^{nt}

Continuously compounded interest:

A = Pe^{rt}

For the quarterly compounded interest, r = 0.25%, and n = 4.

2P = P(1 + \dfrac{0.0025}{4})^{4t}

1.000625^{4t} = 2

\log (1.000625^{4t}) = \log 2

4t(\log 1.000625) = \log 2

t = \dfrac{\log 2}{4\log 1.000625}

t = 277

For the continuously compounded interest, r =0.23%

A = Pe^{rt}

2P = Pe^{0.0023t}

2 = e^{0.0023t}

\ln 2 = \ln e^{0.0023t}

\ln 2 = 0.0023t

t = \dfrac {\ln 2}{0.0023}

t = 301

The quarterly compounded doubles in 277 years.

The continuously compounded doubles in 301 years.

Answer: FYAB gives a better deal.

7 0
2 years ago
Which situation can be represented by the expression <br><br> 5−8
TEA [102]

Answer:

Tammy had 5 dollars left on her credit card but she saw a shirt that cost 8 dollars so now she has -3 dollars in her bank account.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Julio says "If you subtract 13 from my number and multipy the difference by -3 the result is -45" what is Julio's number
ICE Princess25 [194]

Answer:28

Step-by-step explanation:

Julio's number is x

(X-13)*-3=-45

Divide by -3

X-13=15

Add13 to both sides

x=28

6 0
2 years ago
Solve the system of equations using the substitution method.
Karolina [17]
Substitution is where we first Isolate one of the unknowns, express it in terms of the other unknown, and replace the isolated unknown with the other unknown in another equation. So that each time we only need to deal with one unknown. I think you'll get a better idea here:

First name these 2 equations with 1 and 2.
4x + 5y = 7 (1)
y = 3x + 9 (2)

Since y is already isolated in (2), so we can skip the isolation step and continue to substitute.

Substitute (2) into (1).
4x + 5(3x+9) = 7

Expand.
4x + 15x + 45 = 7

Group.
19x + 45 = 7

Shift +45 to the other side and turn it into -45.

19x = 7 - 45
19x = -38

Shift x19 to the other side, turn it into /19.
X = - 38/19
X = - 2

Now we solved x already, we can just substitute x= - 2 back to equation (2).

y = 3(-2) + 9
y = - 6 + 9
y = 3

So, the answers are
x = - 2
y = 3
3 0
2 years ago
Please solve this quickly
adell [148]

Answer:

I Didn't see nothing

Step-by-step explanation:

So I can't help you

7 0
2 years ago
Read 2 more answers
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