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3 years ago

A purse contains 21 coins consisting of nickels and dimes. Find the number of coins of each kind if the total value is $1.65.

Mathematics

1 answer:

MaRussiya [10]3 years ago

4 0

the value of the dimes is 10(21 - 5)

hope this helps

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PLEASE HURRY NEEDED ASAP

Aleksandr-060686 [28]

Answer:

1: Is a function

2: Isnt a function

3: Is a function

4: Isnt a function

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8 0

2 years ago

Read 2 more answers

Luis is packing his bags for his vacation he has 9 unique toy animals but only 5 fit in his bag how many different groups of 5 t

Eva8 [605]

Answer:

126 groups

Step-by-step explanation:

we know that

This is a combination problem, because the order doesn't matter. He has 9 toys and wants to know the number of different combinations of 5 he can take.

The formula for the number of possible combinations of r objects from a set of n objects is given by

$^nC_r=\frac{ {n!}}{r!(n-r)!}$

In this problem we have

$n=9, r=5$

substitute

$^9C_5=\frac{ {9!}}{5!(9-5)!}$

$^9C_5=\frac{ {9!}}{5!(4)!}$

$^9C_5=\frac{ {(9)(8)(7)(6)5!}}{5!(4)!}$

$^9C_5=\frac{ {9)(8)(7)(6)}}{(4*3*2*1)}$

$^9C_5=126$

7 0

3 years ago

Translate equation into a sentence. 2/5v + 3/4 = 2/3x

tatyana61 [14]

Answer:

Two fifths v plus three fourths equals two thirds x

Step-by-step explanation:

8 0

2 years ago

Derek walks along a road which can be modeled by the equation y =2x, where (0,0) represents his starting point. When he reaches

Lady_Fox [76]

Answer:

(35,0)

Step-by-step explanation:

Consider the diagram below, the starting point is given as A and the finish point given as C.

Using similar right-angle triangle, we have that:

$\frac{|AM|}{|BM|}= \frac{|BM|}{|MC|}\\\frac{7}{14}= \frac{14}{x}\\7x=14 X 14\\x=196/7=28$

Therefore to find the point where Derek stops at C, we first determine the distance |AC|

|AC|=7+28=35

The Coordinates at C where Derek stops is (35,0)

8 0

2 years ago

<img src="https://tex.z-dn.net/?f=8%28%20%7B4%7D%5E%7B2%7D%29%20%2B%20%20%7B2%7D%5E%7B4%7D%20" id="TexFormula1" title="8( {4}^{2

cluponka [151]

The given expression $8(4)^2+2^4$ is equal to 144 or $12^2$

<em><u>Solution:</u></em>

Given expression is:

$8(4)^2+2^4$

We have to evaluate the above given expression

We know that,

$(4)^2 = 4 \times 4 = 16$

$2^4 = 2 \times 2 \times 2 \times 2=16$

Substituting these in above given expression, we get

$8(4)^2+2^4=8 \times 16+16\\\\8(4)^2+2^4= 128+16\\\\8(4)^2+2^4=144$

Also we know that,

$12 \times 12 = 144$

Therefore,

$8(4)^2+2^4=144 = 12 \times 12 = 12^2$

Thus the given expression $8(4)^2+2^4$ is equal to 144 or $12^2$

7 0

3 years ago