3 years ago

Simplify the given expression, using only positive

Mathematics

1 answer:

zalisa [80]3 years ago

5 0

Answer: x=4 y=14 z=4

Step-by-step explanation:

On edge it is that

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Find three numbers whose product is -64. You may use integers from -10 to 10. You may not use two numbers that have the same dis

Gnom [1K]

I doesn’t let me see the photo I’m very good at this but I just don’t understand your question

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2 years ago

I am not sure about any of my answers and I don’t know how to find the range for question b or the slope for question c.

myrzilka [38]

Answer:

a) is correct

b) y = -a(x - 2.5)² + h

(5.5,0)

0 = -a(5.5-2.5)² + h

h = 9a

a = h/9

48 = -a(0-2.5)² + h

h = 48 + 6.25a

h = 48 + 6.25(h/9)

h = 157.0909090681

Range: [0,157]

c) (80-144)/(4.5-3)

= -42⅔ or -42.67

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2 years ago

A thread is being pulled off a spool at the rate of 40 cm per second. Find the radius of the spool

murzikaleks [220]

Answer:

r = 0.0424 cm (3sf)

Step-by-step explanation:

it makes 150 rev/sec

1 revolution = 1 circumference = 2pi*r

so every second the spool goes through 2*pi*r*150 of distance

we know that the rate of pulling is 40cm/sec

so 2pi*r*150 = 40

r = 40/(2pi*150), which is 0.04244131816 cm.

check: Circumference is 2pi*r = 0.2666

now multiply by 150rev/sec = 40 cm/sec

3 0

2 years ago

Find the equation of the line shown.

Luda [366]

Answer:

y = -x + 9

Step-by-step explanation:

✔️Find the slope using (9, 0) and (7, 2):

$slope (m) = \frac{y_2 - y_1}{x_2 - x_1} = \frac{2 - 0}{7 - 9} = \frac{2}{-2} = -1$

Slope (m) = -1

✔️Find the y-intercept (b):

The line intercepts the y-axis when y = 9. Therefore, y-intercept (b) = 9

✔️Substitute m = -1 and b = 9 into y = mx + b

Thus,

y = -1(x) + 9

y = -x + 9

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2 years ago

Need help on this ???????????

GREYUIT [131]

Answer:

First choice

-∞ < y< ∞

Step-by-step explanation:

In this function,we need to use graph in order to find out the range.

Graph is attached.

$\boxed{ - \infty < y < \infty }$

6 0

2 years ago