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Anna007 [38]
3 years ago
7

ming- LI spent $15 at the movies. She then earned $30 babysitting. She spent $12 at the bookstore. She ow has $18 left. How much

money did Ming-Li have to begin with?
Mathematics
1 answer:
valentina_108 [34]3 years ago
8 0

Answer:

$29

Step-by-step explanation:

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4x + 7y = 3 x = y - 2
liberstina [14]

First equate 4x+7y=3x,

we get, x+7y=0 ---->equ 1

Now equate 3x=y-2, we get 3x-y=-2 ----->equ2

solve equ 1,2,

We get x= -7/11, y=1/11

8 0
3 years ago
Read 2 more answers
1. A farmer estimates her hens will produce
a_sh-v [17]

Answer:

Expected profit per dozen eggs = 4 ¢

Expected profit on the total egg production = 60,000 ¢

Step-by-step explanation:

Complete table as obtained online

Net Profit | 8 | 6 | 4 | 2 | 0 | -2

Probability |0.1|0.4|0.2|0.1|0.1|0.1

a) Expected profit per dozen eggs

Expected value is given as

E(X) = Σ xᵢpᵢ

xᵢ = each variable

pᵢ = probability of each variable

E(X) = (8×0.1) + (6×0.4) + (4×0.2) + (2×0.1) + (0×0.1) + (-2×0.1) = 4 ¢ per dozen

b) Expected profit on the total egg production

Last year, she had 12,000 dozen eggs

This year, she estimates 3,000 dozen more eggs

Estimated Total egg production this year = 12000 + 3000 = 15,000 dozen eggs

Expected profit per dozen eggs = 4 ¢

Expected profit on 15,000 dozen eggs = 15000 × 4 = 60,000 ¢

Hope this Helps!!!!

5 0
4 years ago
Please help me!!!!!!
antiseptic1488 [7]
My best guess is c= 4.20h
Sorry if I’m wrong
5 0
3 years ago
Read 2 more answers
What is the answer to -134>-a+2(-7-7a)
maw [93]

Answer:

the answer is a > 8

i hope this helps!!

6 0
3 years ago
Find the equation of the tangent line to the curve y=x sqrtx at point (4,8)<br><br> Y=?
Viefleur [7K]

Answer: I think y is 32 im not good at this tho

Step-by-step explanation:

7 0
3 years ago
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