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nexus9112 [7]
2 years ago
14

Simplify: (7x4 – 7x3 + 7x2 + 2x) + (-5x4 + 7x3 + 5x2 – 9)​

Mathematics
1 answer:
ikadub [295]2 years ago
8 0

Answer:

Step-by-step explanation:

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Help with 1 and 3 if possible show work
Vinvika [58]
1)

\bf \qquad \textit{Compound Interest Earned Amount}
\\\\
A=P\left(1+r\right)^{t}
\quad 
\begin{cases}
A=\textit{compounded amount}\\
P=\textit{original amount deposited}\to &\$600\\
r=rate\to 1.6\%\to \frac{1.6}{100}\to &0.016\\
t=years\to &2
\end{cases}
\\\\\\
A=600\left(1+0.016\right)^{2}

3)

\bf V(t)=1350(1.017)^t\implies 
\begin{array}{llllll}
V(t)&=&1350(&1 +& 0.017&)^t\\
A&=&P(&1+&\boxed{r}&)^t
\end{array}

notice the rate "r"... now, is in decimal format, as you saw on 1) is just r/100 so 1.6% was really 1.6/100 or 0.016  anyhow

to get the percentage form, just multiply it by 100

5 0
3 years ago
A car travels 90 miles in 1.5 hours. at this rate, how many miles can it travel in 4 hours?
Bad White [126]
(90 * 4) ÷ 1.5 = 240 miles in 4 hours
4 0
2 years ago
C and ​ ∠D ​ are vertical angles with m∠C=−x+26 and m∠D=2x−10 . What is m∠D ? Enter your answer in the box. ​ °
ANEK [815]
Angle c and angle d are congruent. Congruent means they have the same the measure, or they have EQUAL measures. You set the two values equal to each other and solve for x.
X+26=2x-10 subtract x from both sides
26=x-10 add 10 to both sides
36=x

Now substitute x back in for angle d.
2(36)-10 = 62
4 0
3 years ago
The triangle ABC in the figure provided has midpoints labeled M and N and O.
makvit [3.9K]
HoHm : B means that starting at point B, you do a half-turn about m. This puts point B where A is. Continuing, this point is again allowed to to do a half-turn but this about o so that the point ends up at C.
The answer is Point C.<span />
3 0
3 years ago
Read 2 more answers
Can someone answer my newest question please will give brainly
Aleksandr-060686 [28]

Answer:

yes if you give me brainliest

Step-by-step explanation:

8 0
2 years ago
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