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Amiraneli [1.4K]
3 years ago
8

How do I find the value of the expression 8x9-7+4x5 EXPLAIN PLEASE

Mathematics
2 answers:
AlladinOne [14]3 years ago
7 0
Please don't get mad at me but I did this on tn ready the other day and we learned about it but what you would do is multiply 8x9 then subtract 7 from the product and add 4 to the answer you got and then multiply it by that answer by 5 and you should get your answer. I hope I helped you? 
REY [17]3 years ago
4 0
You find the answer by first multiplying 8x9=72 then 4x5=20 and then 72-9=63 and then 63+4=67 your final answer should be 87
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A car company makes 2 types of cars: luxury and sport. Each luxury car costs the company $15,000 for parts and requires 1,600 ma
Mademuasel [1]

Answer:

luxury=15

sports cars 25

Step-by-step explanation:

Step one:

let the luxury cars be x

and the sports cars be y

the objective function is

maximize

15000x+16000y=625000------1

the constraints are

1. Man-hours

1600x+1500y=61500-----------2

Step two:

the system of equation for the situation is

15000x+16000y=625000------1

1600x+1500y=61500-----------2

let us reduce both equation

divide equation 1 be 1000

and equation 2 by 100 we have

15x+16y=625--------1 x15

16x+15y=615--------2 x16

  225x+240y=9375

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=-31x+0=-465

31x=465

x=465/31

x=15

put x=15 in 15x+16y=625 we have

15(15)+16y=625

225+16y=625

16y=625-225

16y=400

y=400/16

y=25

3 0
3 years ago
9a+2b=5a-7b find the ratio of a to b
Setler [38]

Answer:

5/4

Step-by-step explanation:

9a + 2b = 5a - 7b

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9a - 5a = 7b - 2b

4a = 5b

By cross multiplication,

a/b = 5/4

<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em> </em><em>:</em><em>)</em>

4 0
3 years ago
6x^(2)(x^(3)y+2x-3yz)
horsena [70]
The answer is 6x^5(y+2x-3yz)
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marusya05 [52]
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4 0
3 years ago
Answer of this questions
luda_lava [24]
I only got the answer to 20. Hope this helps!

7 0
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