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3 years ago

Can somebody help me

Mathematics

1 answer:

Nuetrik [128]3 years ago

8 0

Answer:

The second, and fourth choices are true.

Step-by-step explanation:

The symbol < means less than so the arrow will point to the LEFT.

Also -1/4 will not be a part of the solution. because the sign is less than.

Because the inequality is less than there will be an open circle at -1/4.

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A gym membership has an enrollment fee of $50 and costs $35 each month. Which expression represents the cost of the gym membersh

kogti [31]

C 50+35m because m is representing months and its 35 per month so the answer is C

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3 years ago

Read 2 more answers

Help................

Leno4ka [110]

C (I think, I don't know for sure but i'm 99.93% sure!)

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3 years ago

Pergunta 5 You need to fill a football with air to play with it. You know that your pump expels air at speed of 8.2 ft/s. The ne

ra1l [238]

The volume flow rate of the air being pumped into the football will be given by:
Q=V*A
Where
V=Speed
A=Area
You know that your pump expels air at speed of 8.2 ft/s
The area of The needle of your pump is
A=pi*r^2=pi*((4.5/1000)*(3.28))^2=0.00068442 ft^2
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8 0

3 years ago

Show that the roots of the equations

harkovskaia [24]

Answer:

The roots are real and distinct.

Step-by-step explanation:

Given the following equation:

$x^{2} + kx - k -2 =0$

In this problem, a = 1, b = k and c = -k - 2

The discriminant is b² - 4ac, and for the roots to be real and distinct, it must be at least or greater than 0.

We get,

(k)²- 4(1)(-k - 2) = 1 - 4(-k - 2)

= k² + 4k + 8

Let's check:

At k = -2,

$(-2)^{2} + 4(-2) + 8 = 4 - 8 + 8 = 4


$

At k = 0,

$(0)^2 + 4(0) + 8 = 8$

At k = -100,

$(-100)^2 + 4(-100) + 8 = 10,000 - 400 + 8 = 9608$

Therefore, we can conclude that for all values of k, the roots are real and distinct.

This has been a long way in answering this question, so it would be great if you could mark me as brainliest

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3 years ago

HELP: Cho charges $1500 to build a small deck and $2500 to build a large deck. During the spring and summer, she built 5 more sm

Ludmilka [50]

Answer:

if she build x numbers of large decks, therefore small decks would be (x + 5)

1500*(x+5)+2500x =23500

1500x+7500+2500x=23500

4000x+7500 =23500

4000x=23500-7500

4000x=16000

x=4

4+5=9

cho built 4 large decks and 9 small decks

7 0

3 years ago