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MrRissso [65]
3 years ago
12

5m + 9n if m = -7 and n = 4

Mathematics
2 answers:
dusya [7]3 years ago
8 0

Answer:

1

Step-by-step explanation:

5m + 9n

5(-7) + 9(4)

-35 + 36

1

HACTEHA [7]3 years ago
3 0

Answer:

1

Step-by-step explanation:

5m + 9n

Plug in the numbers

5(-7) + 9(4)

Multiply

- 35 + 36

Solve.

36-35=1

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7divided by 43.4 pls help
Vikki [24]

0.161      (they said explain it so)                                                                                                                                                                                                                                                                              

8 0
3 years ago
. Halla la expresión algebraica de un
Assoli18 [71]

Answer:

100*x + 14*y

Step-by-step explanation:

Tenemos que en el sistema decimal un número de 3 cifras se representa de este modo:

100*x + 10*y + z

También es llamado descomposición polinómica y de esta manera podremos encontrar la expresión algebraica.

Nos dicen la relación entre unidades y decenas, 4 veces mayor las unidades que las decenas, por lo tanto:

z = 4*y

Reemplazamos y nos queda:

100*x + 10*y + 4*y

reduciendo nos queda:

100*x + 14*y

Por lo tanto esta sería la expresión algebraica.

3 0
3 years ago
Find the cost of 20 grams of lead at 60$ per kilogram
ASHA 777 [7]

Answer:

$1.20

Step-by-step explanation:

Ratio:

Grams : Kilograms

1 : .001

Multiply both sides by 20 to convert grams to kilograms:

Grams : Kilograms

1 : .001

x20 x20

20 : .02

This means that 20 grams of lead = .02 kilograms of lead

Price:

Cost : Kilogram

$60 : 1

Multiply both sides by .02 to find the price of the lead:

Cost : Kilogram

$60 : 1

x.02  x.02

$1.20 : .02

Therefore, .02 kg of lead costs $1.20.

6 0
3 years ago
The difference of a number divided by 5 and 6 equals 2. <br><br> write equation
dusya [7]
(x/5)-6=2

It depends by difference of. Difference between is more specific. 



4 0
3 years ago
Read 2 more answers
un aliaj de platina are titlu de 0,800 si contine 1968 g de platina pura. Aflati masa aliajului. E urgent!!!!!!!!!!!!!!!!!!!1
MrRissso [65]

așa că nu sunt sigur ce vrei să spui ce este întrebarea?
7 0
3 years ago
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