All categories

3 years ago

Pls help it’s hard I don’t understand

Mathematics

1 answer:

Rus_ich [418]3 years ago

7 0

Answer:

4: 600

5: I cannot see the recipe for Tomas's oatmeal.

You might be interested in

How to do 6b - 8 - 5b=

zhuklara [117]

b = 8

Since 6b and 5b have the same variables, you can subtract them both. 1b, but I'd perfer just b. Then, swap the -8 to the other side. It makes it positive. So it's b = 8.

4 0

4 years ago

Read 2 more answers

Solve the following linear equations a) a+7 =15

klasskru [66]

Answer:

a = 8

Step-by-step explanation:

a + 7 = 15

a + 7 - 7 = 15 - 7 Subtract 7 from both sides.

a = 8

6 0

2 years ago

Read 2 more answers

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

4 years ago

Read 2 more answers

If Johnny has 4 apples and heather has 6 apples, how many apples will they have together?

sergejj [24]

Answer:

-2

Step-by-step explanation:

4 0

4 years ago

What is 4.7 times 10 to the negative third power (show your work)

Afina-wow [57]

Since we are working with an equation written in scientific notation and we are dealing with a negative exponent, we are going to divide 4.7 by 10 three times.

4.7 / 10 = 0.47

0.47 / 10 = 0.047

0.047 / 10 = 0.0047

Best of Luck!

4 0

3 years ago