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3 years ago

Which inequality is shown in the graph?

Mathematics

2 answers:

Varvara68 [4.7K]3 years ago

8 0

Answer: D

Step-by-step explanation:

I don’t know how to explain this to you step by step but when it comes to questions like this try to think more “logically” (if that makes sense) especially if you’re not familiar with the topic, like me. Think about it, if it was the first one the line on the graph would be above the middle line (its addition plus its greater than y so that wouldn’t be correct). Now the second one is subtraction but its less than y and everything thats coloured goes up not down so it has to be greater than y. C is not the correct answer because its a regular equation and thats not what the question wants plus its the only question out of the the 4 answers which is completely the odd one out so you can just cancel that out. Mow we come to the last answer which is the correct answer because it follows all the right “points” I mentioned earlier. I hope this makes sense to you, sorry I couldn’t explain it better!

motikmotik3 years ago

6 0

The answer is D just trust me lol

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Answer:

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Step-by-step explanation:

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3 years ago

What area of the grass is being watered by this sprinkler

Novay_Z [31]

<h3>♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>

➷ Use this formula:

Area of circle = $\pi r^{2}$

However, as we are using 3.14 for 'pi', we can write it like this:

Area = $(3.14)r^{2}$

'r' is the radius which is 12ft

Substitute this value into the equation:

Area = $(3.14)12^{2}$

Solve:

Area = 452.16

Multiply this value by 0.75 to get the answer:

452.16 x 0.75 = 339.12

339.12 square feet is being watered

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

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5 0

3 years ago

PLEASE HELP!!

Bezzdna [24]

Answer:

$y=-\dfrac{9}{40}x^2+\dfrac{441}{40}\\ \\y=-\dfrac{9}{160}x^2+\dfrac{1,521}{160}$

Step-by-step explanation:

If a parabola has its vertex on the y-axis, then its equation is

$y=ax^2+b$

This parabola passes through the point R(3,9), then

$9=a\cdot 3^2+b\\ \\9=9a+b$

The area of the right triangle PQR is

$A_{PQR}=\dfrac{1}{2}\cdot PQ\cdot QR$

Find PQ and QR, if $P(x_1,0),\ Q(3,0),\ R(3,9):$

$PQ=\sqrt{(x_1-3)^2+(0-0)^2}=|x_1-3|\\\\QR=\sqrt{(3-3)^2+(0-9)^2}=9$

Now,

$40.5=\dfrac{1}{2}\cdot |x_1-3|\cdot 9\\ \\90=9|x_1-3|\\ \\|x_1-3|=10\\ \\x_1-3=10\ \text{or}\ x_1-3=-10\\ \\x_1=13\ \text{or }x_1=-7$

We get two possible points $P_1(-7,0)$ and $P_2(13,0).$

For point $P_1:\\$

$0=a\cdot (-7)^2+b\\ \\49a+b=0$

So,

$b=-49a\\ \\9=9a-49a\\ \\-40a=9\\ \\a=-\dfrac{9}{40}\\ \\b=\dfrac{441}{40}\\ \\y=-\dfrac{9}{40}x^2+\dfrac{441}{40}$

For point $P_2:\\$

$0=a\cdot (13)^2+b\\ \\169a+b=0$

So,

$b=-169a\\ \\9=9a-169a\\ \\-160a=9\\ \\a=-\dfrac{9}{160}\\ \\b=\dfrac{1,521}{160}\\ \\y=-\dfrac{9}{160}x^2+\dfrac{1,521}{160}$

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3 years ago

A gardening club has 36 members,of which 29 are males and the rest are females.What is the ratio of females to males?

Jlenok [28]

7:29
i found the answer by doing 29 minus 36 and the answer is how many females are on the gardening club

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3 years ago

for the polynomial f(x)=x^3-x^2-4x+4 how many zeros does the function have over the set of complex numbers

s344n2d4d5 [400]

The number of the zeroes of the function will be 3. Then the zeroes of the functions are -2, 1, and 2.

<h3>What is a factorization?</h3>

It is a method for dividing a polynomial into pieces that will be multiplied together. At this moment, the polynomial's value will be zero.

The equation is given below.

f(x) = x³ - x² - 4x + 4

Then the factor of the equation will be

f(x) = x²(x - 1) - 4(x - 1)

f(x) = (x² - 4)(x - 1)

f(x) = (x² - 2²)(x - 1)

f(x) = (x + 2)(x - 2)(x - 1)

Then the solution to the equation will be

(x + 2)(x - 2)(x - 1) = 0

x = -2, 1, 2

The number of the zeroes of the function will be 3. Then the zeroes of the functions are -2, 1, and 2.

More about the factorization link is given below.

brainly.com/question/6810544

#SPJ1

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2 years ago