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2 years ago

3) Jack has $400 and is going to start saving $30 per week. Sally has $225 and is going to start saving $55 per

Mathematics

1 answer:

Gre4nikov [31]2 years ago

8 0

It will take 7 weeks and both will have $610

30x7=210+400=610
55x7=385+225=610

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Please I need the correct answer please

Rzqust [24]

(−1

2 )(n^3)+

1

2 n^2+4.6n+(−

1

2)(n^3)+

1

2 n^2+4.5n

−1

2 n^3+

2 n^2+4.6n+

−1

2 n^3+

2 n^2+4.5n

Combine Like Terms:

−1

2 n^3+

1

2 n^2+4.6n+

−1

2 n^3+

1

2 n^2+4.5n

=(−1

2 n^3+

−1

2 n^3)+(

1

2 n^2+

1

2 n^2)+(4.6n+4.5n)

=−n^3+n^2+9.1n

Answer:

=−n^3+n^2+9.1n

Everything underlined means its a fraction/divided hope this helps :D

8 0

3 years ago

Using Euler’s formula, how many edges does a polyhedron with 20 faces and 12 vertices have?

astra-53 [7]

Euler's formula for a polyhedron is given by:

$\begin{gathered} F+V=E+2 \\ \text{where,} \\ F=\text{faces} \\ V=\text{vertices} \\ E=\text{edges} \end{gathered}$

Make E, the subject of the formula:

$\begin{gathered} F+V=E+2 \\ E=F+V-2 \end{gathered}$

Put F = 20, V = 12, to obtain E,

$\begin{gathered} E=20+12-2 \\ E=30 \end{gathered}$

Therefore, there are 30 edges

3 0

1 year ago

Five more than n is equal to 9

dedylja [7]

n+5=9 is the answer for this

4 0

3 years ago

What’s the geometric mean between 7 and 28 ?

Yuki888 [10]

I believe the mean its 14!

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3 years ago

Which unit is commonly used in both the metric and u.s system of units

Arlecino [84]

Answer:

Step-by-step explanation:

Surely the units of time: minut, hour, second.

5 0

3 years ago

Read 2 more answers