3 years ago

Find each rate and unit rate 420 miles in 7 hours

Mathematics

1 answer:

Anon25 [30]3 years ago

4 0

the unit rate is 60 mph

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Which is the property that justifies the action?

lidiya [134]

A) Action: multiply both sides by 4.

Have a look:

(x/4)x4=16x4
x=64

As you can see, the value of x can be found by multiplying 4 on both sides.

Hope I helped :)

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3 years ago

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Which equation is graphed here?

lyudmila [28]

Y = (-3/2)x + 1 is the equatjon

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3 years ago

Someone help please

nadezda [96]

Answer:

Step-by-step explanation:

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What is the first term in a geometric sequence if the common ratio is − 2 and the sum of the first six terms is −105?

Serggg [28]

$\bf \qquad \qquad \textit{sum of a finite geometric sequence}
\\\\
S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
----------\\
r=-2\\
n=6\\
S_6=-105
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$\bf -105=a_1\left( \cfrac{1-(-2)^6}{1-(-2)} \right)\implies -105=a_1\left( \cfrac{1-(64)}{1+2} \right)
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\cfrac{-105}{-21}=a_1\implies 5=a_1$

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3 years ago

Ravi and his wife are each starting a saving plan. Ravi will initially set aside $125 and then add $40.75 every week to the savi

katen-ka-za [31]

Answer:

T = 125 +116.40N

Step-by-step explanation:

The total savings is the sum of the two plan values:

T = A + B

T = (125 +40.75N) +(75.65N) . . . . substitute the given formulas

T = 125 + (40.75+75.65)N . . . . . . .combine like terms

T = 125 +116.40N

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3 years ago

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