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Mars2501 [29]
3 years ago
6

Caroline is saving up to buy a new video game .she already has $45 and can save an additional $9 per week using money from her a

fter-school job how much total money you would Caroline have after 9 weeks of saving? also write an expression that represents the amount of money Caroline would have saved in W weeks .​

Mathematics
1 answer:
notka56 [123]3 years ago
5 0
9w+45= amount of money she’ll have after any amount of weeks.

So, since W is weeks... and you have 9 weeks, you do (9x9)+45.

Then you get 81+45, which is 126. She will have $126 after 9 weeks
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kogti [31]

Step-by-step explanation:

In the expression a^n, for integer values of n greater than 1, there are n factors. For example, a^2 = a * 2 (2 factors), a^3 = a * a * a (3 factors), etc.

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If a is negative, and n is even, then a^n is non-negative.

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3 years ago
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Anton [14]

Answer:

Δ PQT ~ Δ QRS  .....{S-S-S test for similarity}...Proof is below.

Step-by-step explanation:

Given:

In Δ PQT

PQ = 30 ft

QT = 28 ft

TP = 20 ft

In Δ QRS

QR = 15 ft

RS = 14 ft

SQ = 10 ft

To Prove:

Δ PQT ~ Δ QRS

Proof:

First we consider  the ratio of the sides

\frac{PQ}{QR}=\frac{30}{15} = \frac{2}{1}            ..............( 1 )

\frac{QT}{RS}=\frac{28}{14} = \frac{2}{1}            ..............( 2 )

\frac{TP}{SQ}=\frac{20}{10} = \frac{2}{1}            ..............( 3 )

So By equation ( 1 ), ( 2 ) and  ( 3 ) we get

\frac{PQ}{QR}=\frac{QT}{RS} = \frac{TP}{SQ}

Now in Δ PQT  and Δ QRS we have

\frac{PQ}{QR}=\frac{QT}{RS} = \frac{TP}{SQ}

Which are corresponding sides of a similar triangle in proportion.

∴ Δ PQT ~ Δ QRS  .....{S-S-S test for similarity}...Proved

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Answer:


Step-by-step explanation:

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