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melomori [17]
4 years ago
12

Mr. Loh is bored over winter break so he gets a temporary job at a halal cart. He gets paid 3$ for each chicken over rice that h

e sells.l However, he gets hungry on the job and spends $12 a day on food. He wants to make at least 90 in a day. Write and solve the inequality
Mathematics
2 answers:
Lemur [1.5K]4 years ago
5 0

Answer:

He has to make 26 chicken over rice or more to get at least $90 a day.

Step-by-step explanation:

3x+12 ≥ 90 (we put x in for how many chicken over rice he sells)

3x ≥ 90-12

3x ≥ 78

x ≥ 26

He has to make 26 chicken over rice or more to get at least $90 a day.

Masja [62]4 years ago
3 0

Answer:

halal cart. Imao. does he sell fatoush

Step-by-step explanation:

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Step-by-step explanation:

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Which of the following sets are subspaces of R3 ?
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Answer:

The following are the solution to the given points:

Step-by-step explanation:

for point A:

\to A={(x,y,z)|3x+8y-5z=2} \\\\\to  for(x_1, y_1, z_1),(x_2, y_2, z_2) \varepsilon A\\\\ a(x_1, y_1, z_1)+b(x_2, y_2, z_2) = (ax_1+bx_2,ay_1+by_2,az_1+bz_2)

                                        =3(aX_l +bX_2) + 8(ay_1 + by_2) — 5(az_1+bz_2)\\\\=a(3X_l+8y_1- 5z_1)+b (3X_2+8y_2—5z_2)\\\\=2(a+b)

The set A is not part of the subspace R^3

for point B:

\to B={(x,y,z)|-4x-9y+7z=0}\\\\\to for(x_1,y_1,z_1),(x_2, y_2, z_2) \varepsilon  B \\\\\to a(x_1, y_1, z_1)+b(x_2, y_2, z_2) = (ax_1+bx_2,ay_1+by_2,az_1+bz_2)

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\to a(x_1,y_1,z_1)+b(x_2, y_2, z_2) \varepsilon  B

The set B is part of the subspace R^3

for point C: \to C={(x,y,z)|x

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\to for (-2,-1,2) \varepsilon  C

\to -1(-2,-1,2)= (2,1,-1) ∉ C

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The set C is not a part of the subspace R^3

for point D:

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The scalar multiplication s is not to hold

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this is an inequality, which is not hold

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\to E= {(x,0,0)}|x \ is \ arbitrary) \\\\\to for (x_1,0 ,0) ,(x_{2},0 ,0) \varepsilon E \\\\\to  a(x_1,0,0) +b(x_{2},0,0)= (ax_1+bx_2,0,0)\\

The  x_1, x_2 is the arbitrary, in which ax_1+bx_2is arbitrary  

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The x_1, x_2 arbitrary so, they have ax_1+bx_2 as the arbitrary \to a(-2x_1,-3x_1,-8x_1)+b(-2x_2,-3x_2,-8x_2) \varepsilon F

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