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4 years ago

Please help me right away! will give brainliest

Mathematics

1 answer:

Anon25 [30]4 years ago

4 0

The table represents a greater unit rate of change.

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Which number line shows the inequality n < -1?

nordsb [41]

Answer:

The second line

Step-by-step explanation:

8 0

3 years ago

How to to this? Can you please help? 1.A

eimsori [14]

First you need to expand them
(x^2 + 9) + (2x + 6)
then you add them together

x^2 + 2x + 15
now you can factorise it

i hope this helped you

8 0

4 years ago

Pls help with this volume wiestion

Zielflug [23.3K]

Answer:

15833.6269741 cm^3.But we can make it 15,833.63 cm^3 rounded to the nearest hundredth.

Step-by-step explanation:

so let’s solve this using the following formula -> $V=\pi r^2h$ .

So if the height is 25 and the radius is 12 them we can plug those numbers into the formula.

$\pi (12)^2(35)$ .

So let’s start by doing 12 squared which is 144 then 144*35 which is 5040.

And now 5040*pi which is 15833.6269741 cm^3.But we can make it 15,833.63 cm^3 rounded to the nearest hundredth.

Id you ant to check if my answer is correct look at the image below.

3 0

3 years ago

suppose y varies directly with the square root of x and inversely with z. when x=4 and z=3, then y=10. find y if x=49 and z=3

lyudmila [28]

$\bf \qquad \qquad \textit{double proportional variation}\\\\
\begin{array}{llll}
\textit{\underline{y} varies directly with \underline{x}}\\
\textit{and inversely with \underline{z}}
\end{array}\implies y=\cfrac{kx}{z}\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------$

$\bf \begin{array}{llll}
\textit{y varies directly with}\\
\textit{the square root of x and inversely with z}
\end{array}\qquad y=\cfrac{k\sqrt{x}}{z}
\\\\\\
\textit{we also know that }
\begin{cases}
x=4\\
z=3\\
y=10
\end{cases}\implies 10=\cfrac{k\sqrt{4}}{3}\implies 30=k2
\\\\\\
\cfrac{30}{2}=k\implies 15=k\qquad \qquad \boxed{y=\cfrac{15\sqrt{x}}{z}}
\\\\\\
\textit{when x = 49 and z = 3, what is \underline{y}?}\qquad \qquad y=\cfrac{15\sqrt{49}}{3}$

$\bf y=\cfrac{15\cdot 7}{3}\implies y=\cfrac{15}{3}\cdot 7\implies y=5\cdot 7\implies y=35$

5 0

3 years ago

Solve system by elimination 9x + 3y = 24 10x - 2y = 0

valentina_108 [34]

Answer:

(1, 5 )

Step-by-step explanation:

Given the 2 equations

9x + 3y = 24 → (1)

10x - 2y = 0 → (2)

Multiplying (1) by 2 and (2) by 3 and adding the result will eliminate the y- term

18x + 6y = 48 → (3)

30x - 6y = 0 → (4)

Add (3) and (4) term by term to eliminate y

48x + 0 = 48

48x = 48 ( divide both sides by 48 )

x = 1

Substitute x = 1 into either of the 2 equations and solve for y

Substituting into (1)

9(1) + 3y = 24

9 + 3y = 24 ( subtract 9 from both sides )

3y = 15 ( divide both sides by 3 )

y = 5

solution is (1, 5 )

4 0

3 years ago