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2 years ago

15

Combine like terms to create an equivalent expression. Enter coefficients as simplified proper or improper fractions or integers

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PLS help this is due soon !!

1 answer:

Art [367]2 years ago

8 0

Answer:

Step-by-step explanation:

The first (and only step) is to remove the brackets.

-1/2 * - 3y = 3/2y Two minus make a plus

-1/2 * 10 = - 5

Answer: 3/2 y - 5

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the pitch, or frequency, of a vibrating string varies directly with the square root of the tension. if a string vibrates at a fr

Naily [24]

$\bf \qquad \qquad \textit{direct proportional variation}\\\\
\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad y=kx\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------\\\\
\begin{array}{llll}
\stackrel{frequency}{f}\textit{ of a vibrating string varies directly}\\
\qquad \qquad \textit{with the square root of the tension }\stackrel{tension}{t}
\end{array}$

$\bf f=k\sqrt{t}\quad \textit{we also know that }
\begin{cases}
f=300\\
t=8
\end{cases}\implies 300=k\sqrt{8}
\\\\\\
\cfrac{300}{\sqrt{8}}=k\implies \cfrac{300}{\sqrt{2^2\cdot 2}}=k\implies \cfrac{300}{2\sqrt{2}}=k\implies \cfrac{150}{\sqrt{2}}=k
\\\\\\
\textit{and we can \underline{rationalize} it to }\cfrac{150\sqrt{2}}{2}\implies 75\sqrt{2}=k$

$\bf thus\qquad f=\stackrel{k}{75\sqrt{2}}\sqrt{t}\implies \boxed{f=75\sqrt{2t}}\\\\
-------------------------------\\\\
\textit{now, when t = 72, what is \underline{f}?}\qquad f=75\sqrt{2(72)}$

5 0

3 years ago

Read 2 more answers

Write an equation in slope-intercept form of the line with slope of 7 and a y-intercept of 22

iragen [17]

Answer:

y = 7x + 22

Step-by-step explanation:

pretty self explanatory

hope this helps <3

4 0

2 years ago

Read 2 more answers

Find the side of to cube<br> whose volume is<br> 5.832cm3

Scorpion4ik [409]

Answer:

$1.8cm$

Step-by-step explanation:

Use the volume of cube formula.

$\displaystyle V=s^3$

$\displaystyle5.832=s^3$

$\displaystyle\sqrt[3]{5.832} =s$

$\displaystyle s=1.8$

3 0

3 years ago

Read 2 more answers

Exam question: You can buy a 57-pound bag of flour for $ 11 or you can buy a 1-pound bag for $ 0.41 Compare the per pound co

egoroff_w [7]

Answer:

Step-by-step explanation:

57 lb bag for $ 11 or 1 lb bag for $ 0.41

11/51 = 0.215 .....rounds to 0.22 ......this is the correct way...... the student messed up and divided wrong.

the large bag only charges $ 0.22 per lb, whereas, the small bag charges $ 0.41 per lb.

3 0

3 years ago

Given ∆ABC≅∆PQR, mb=8v-9 , find m 31°<br> b.<br> 52°<br> c.<br> 49°<br> d.<br> 32°

Ipatiy [6.2K]

Here, 5v+6 = 8v-9
8v - 5v = 6 + 9
3v = 15
v = 15/3
v = 5

So, m<b = 5(5) + 6 = 25 + 6 = 31
As they are congruent, m<q would be same [ 31 degree ]

In short, Your Answer would be Option A

Hope this helps!

3 0

3 years ago