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3 years ago

Factored form of x^2-3x-4

Mathematics

2 answers:

Agata [3.3K]3 years ago

6 0

Answer:

x=4,x=-1

Step-by-step explanation:

x2-3x-4

To factorise we will need to get two numbers that when added it will give -3 and the same two numbers when multiplied it will give you-4

The two numbers involved is -4 and +1

x2-4x+x-4

Let's factorise

x(x-4)+1(x-4)

(x-4)(x+1)

x-4=0

Make x the subject of formula

x=4

x+1=0

Let's make x the subject of formula

x=-1

kolbaska11 [484]3 years ago

5 0

(x + 1) x (x - 4). When you check it you will get your original expression.

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Calculate the percent.

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3 years ago

A triangular bandana has an area of 46 square inches. The height of the triangle is 5 3 4 inches. Enter and solve an equation to

shutvik [7]

Answer: 16 inches

Step-by-step explanation:

The area of a triangle = bh/2

where b = base = unknown

h = height = 5 3/4 inches

Area = 46 inches²

Therefore, 46 = base × 5 3/4 / 2

Cross multiply

46 × 2 = base × 5 3/4

92 = base × 5 3/4

Base = 92 ÷ 5 3/4

Base = 92 ÷ 23/4

Base = 92 × 4/23

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8 0

3 years ago

Suppose that 45% of people have dogs. If two people are randomly chosen, what is the probability that they both have a dog

mylen [45]

Answer:

$P(Dogs) = 0.2025$

Step-by-step explanation:

Given

$Proportion, p = 45\%$

Required

Probability of two people having dog

First, we have to convert the given parameter to decimal

$p = \frac{45}{100}$

$p = 0.45$

Let P(Dogs) represent the required probability;

This is calculated as thus;

P(Dogs) = Probability of first person having a dog * Probability of second person having a dog

$P(Dogs) = p * p$

$P(Dogs) = 0.45 * 0.45$

$P(Dogs) = 0.45^2$

$P(Dogs) = 0.2025$

Hence, the probability of 2 people having a dog is  $P(Dogs) = 0.2025$ 

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4 years ago

1) What is 5/7 x 3/5? A)2/3 B)2/9 C)3/7 D)5/4

Yuliya22 [10]

Answer: 3/7

Step-by-step explanation:

8 0

3 years ago

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What is the slope-intercept form of this equation 3x+9y=18

irina [24]

y = mx + b

m: slope

b: y-intercept

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

3x + 9y = 18

-3x -3x

9y = -3x + 18

/9 /9

y = -3/9x + 2 OR y = -1/3 + 2

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

m = -3/9 OR -1/3

b = 2

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PLEASE RATE AS THE BRAINLIEST ANSWER! THANK YOU! :)

6 0

3 years ago

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