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beks73 [17]
2 years ago
6

John has twice as many dimes as nickels. All together he has $2.75. How many dimes do he have?

Mathematics
1 answer:
frez [133]2 years ago
3 0
They're is 27 dimes.
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I don’t really get this one.<br> Thx and have a great day!!
gayaneshka [121]

Answer:

The correct option is C). (9,4)

The coordinates of a point N is (9,4)

Step-by-step explanation:

Theory: If point P(x,y) lies on line segment AB and AP: PB=m:n, then we say P divides line AB internally in ratio of m:n and Point is given by

P=(\frac{mX2+nX1}{m+n} , \frac{mY2+nY1}{m+n})

Given that point, M is lying somewhere between point L and point N.

The coordinates of a point L is (-6,14)

The coordinates of a point M is (-3,12)

Also, LM: MN = 1:4

We can write as,

Let,

Point L(-6,14)=(X1, Y1)

Point M(-3,12)=(x,y)

Point N is (X2, Y2)

m=1 and n=4

M(-3,12)=(\frac{mX2+nX1}{m+n} , \frac{mY2+nY1}{m+n})

M(-3,12)=(\frac{1(X2)+4(-6)}{1+4} , \frac{(Y2)+4(14)}{1+4})

M(-3,12)=(\frac{(X2)-24}{5} , \frac{1(Y2)+56}{5})

(-3)=\frac{(X2)-24}{5}

(-15)=X2-24

X2=9

(12)=\frac{(Y2)+56}{5}

(60)=Y2+56

Y2=4

Thus,

The coordinates of a point N is (9,4)

Result: The correct option is C). (9,4)

3 0
3 years ago
Whats the average between these numbers:7.75,7.25,7.33,7.6?
satela [25.4K]

Step-by-step explanation:

Average between these no.s =

\frac{7.75 + 7.25 + 7.33 + 7.6}{4}

= 7.4825

= 7.5 approx

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3 years ago
If a rectangular poster has an area of
d1i1m1o1n [39]
2x ^2 - 9x + 10=\\&#10;2x^2-4x-5x+10=\\&#10;2x(x-2)-5(x-2)=\\&#10;(2x-5)(x-2) \Rightarrow C
8 0
3 years ago
James can finish a job in 1.5 hours. Jane can finish the same job in one hour. How long will it take them to finish this job if
shusha [124]
An hour and 15 minutes i believe. not 100% though
4 0
3 years ago
What is the area of the triangle? On a coordinate plane, a triangle has a base of 8 units and a height of 6 units. 24 square uni
LekaFEV [45]

Answer:

24

Step-by-step explanation:

8*6=48/2=24

6 0
3 years ago
Read 2 more answers
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