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2 years ago

I need help and it is y intercept and x intercept

Mathematics

1 answer:

Neporo4naja [7]2 years ago

5 0

Answer:

y-intercept (0, -3) and x-intercept (3/2, 0)

Step-by-step explanation:

y + 5 =2(x + 1)

y + 5 =2x + 2

subtract 5 from both side

y =2x -3

-3 is the y-intercept because in y=mx+b, b is the y-intercept and it always starts at 0.

To find the x-intercept, we need to plug in 0 for y in y =2x -3

0=2x -3

add 3 to both sides

2x=3

divide both sides by 2

x=3/2 and so the x-intercept is 3/2 and it always starts at 0.

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2 years ago

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2 years ago

Help. I have no idea what to do

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2 years ago

Solve: 8x2 + 64x = 0

tankabanditka [31]

Solutions

Factor out the common term 8x

8x(x+8)=0

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1. Ask: When will x(x+8) equal zero?

2. Answer: When x=0 or x+8=0.

3. Solve each of the 2 equations above:

x=0,−8

8 0

2 years ago

the ratio of the number of apples to the number of oranges is 4:6. The ratio of the number of oranges to the number of pears is

Maksim231197 [3]

The answer is 64 apples, 96 oranges, and 12 pears.

Let's represent the fruit as following:
a - the number of apples,
o - the number of oranges,
p - the number of pears.

$a:o=4:6$
⇒ $\frac{a}{o}= \frac{4}{6}$
⇒ $a= \frac{4}{6}o$

$o:p=8:1$
⇒ $\frac{o}{p}= \frac{8}{1}$
⇒ $o= 8p$

Therefore:
$a= \frac{4}{6}*8p =16/3p$

Now, if $a+o+p=172$ , then:
$\frac{16}{3}p +8p+p=172$
$\frac{16}{3}p +9p172$

Since $9= \frac{9}{1} = \frac{27}{3}$ , 9p can be expressed as 27/3p:
$\frac{16}{3}p+ \frac{27}{3}p=172$
$\frac{43}{3}p =172$
⇒ $p =172* \frac{3}{43}$
⇒ p = 12
There are 12 pears.

Since o = 8p, o = 96:
o = 8 × 12 = 96
There are 96 oranges.

Since $a= \frac{16}{3}p$ , a = 64:
$a= \frac{16}{3} *12=16*4=64$
There are 64 apples.

Therefore, there are 64 apples, 96 oranges, and 12 pears.

6 0

2 years ago