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3 years ago

MAX POINTS!!!! Please help me solve the problem in the picture and tell me what I’m doing also explain each step.

Mathematics

2 answers:

lapo4ka [179]3 years ago

5 0

Answer: j=0.4

-j+0.8=-0.9j+0.76

-j+0.8+0.9j=-0.9+0.76+0.9j

-0.1j+0.8=0.76

-0.1+0.8-0.8=0.76-0.8

-0.1j=-0.04

-0.1j/-0.1=-0.04/-0.1

j=0.4

Ya have a good day.

algol133 years ago

3 0

Answer 0.4
Regroup terms: 0.8 - j= -0.9j + 0.76
Add j to both sides: 0.8 = -0.9j + 0.76+j
Simply : 0.8=0.1×j+0.76
Subtract: 0.76 from both sides 0.8-0.76=0.1x j
Simplify 0.8−0.76 to 0.04: 0.04= 0.1×j
Divide both sides by 0.1: 0.04/0.1=j
Simply 0.04/0.1 to 0.4: 0.4 =j
Switch sides: j= 0.4

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Answer:

50 minutes

Step-by-step explanation:

Given:

$\bullet \ \ \text{Monday:} \ \dfrac{2}{3} \times \text{Hour}\\\\\bullet \ \text{Wednesday:} \ \dfrac{1}{2} \times \text{Hour}$

Since Emily only practiced on Monday and Wednesday, the sum of time on both days is the time Emily practiced on the piano for a week.

$\implies \text{Monday + Wednesday = Total time practiced on piano for a week}$

Substitute the times in the equation

$\implies (\dfrac{2}{3} \times \text{Hour}) + (\dfrac{1}{2} \times \text{Hour}) = \text{Total time practiced on piano for a week}$

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2 years ago

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Usando el concepto del área del triángulo, se encuentra que :

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La base es de 50.91 unidades.

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El área del triángulo de base b y altura h es dada por:

$A = \frac{bh}{2}$

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El area es de 432 unidades quadradas, o sea, $A = 432$
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Reemplazando en la ecuación para el área, es posible encontrar la altura:

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For every 15 columns of news stories in a newspaper, 4 columns of ads are required. If a newspaper contains 300 columns of news

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By using cross multiplication
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So, the number of columns of ads must it have = 80

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4 years ago

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