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Anarel [89]
3 years ago
14

What is the answer to number 8.

Mathematics
1 answer:
Viktor [21]3 years ago
4 0

Its 20. |-2|+4-(-2)×(7). This simplifies to 2+4+(2×7)

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Este curso nuestro instituto tiene 473 alumnos. Si nos dicen que respecto al curso anterior se ha producido un aumento de inscri
tester [92]

Answer:

En el curso anterior había 430 alumnos.

Step-by-step explanation:

El curso tiene 473 alumnos. Nos dicen que respecto al curso anterior se ha producido un aumento de inscripciones del 10 %. Entonces, siendo x la cantidad de alumnos que había en el curso anterior, se puede plantear la ecuación:

x + 0.1*x= 473

Resolviendo se obtiene:

1.1*x=473

x= 473 ÷1.1

x= 430

<u><em>En el curso anterior había 430 alumnos.</em></u>

7 0
3 years ago
e is 150% more than d . what is the ratio d:e in its simplest form? what is the ratio e:d in the form 1::n​
Bad White [126]

Answer:

d:e is 2:3

Step-by-step explanation:

if 'e' is 150% more than 'd' we can say that 'e' is 1.5 and 'd' is 1

ratio of 1/1.5 or 1÷3/2 is 2/3

3 0
3 years ago
Please help me...............
denis-greek [22]

Answer:

Step-by-step explanation:

a(20ft)

b(46ft)

c(72.6mm)

6 0
2 years ago
Helppppppppppppppppp plzzzzzzzzzzzzzzzzzzzzzz
blondinia [14]
A it’s only right they is no way you can get more then A and it’s rounded
8 0
3 years ago
Two regular pentagons have areas of 20 mm² and x² - x mm². What values of x make the pentagons congruent?
Aleksandr-060686 [28]

<u>Answer</u>

5 and -4


<u>Explanation</u>

If the two triangle are congruent then they have the same area.

20 = x² - x

x² - x - 20 = 0

x² - x + (1/2)² = 20 + (1/2)²

(x - 1/2)² = 20.25

x - 1/2 = √20.25

x - 1/2 = 4.5                             or    x - 1/2 = - 4.5

x = 4 1/2 + 1/2                                      x = -4 1/2 + 1/2

   = 5                                                      = -4

The values of x are 5 and -4.



8 0
3 years ago
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