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3 years ago

What’s the answer I’m really stuck and homework due today

Mathematics

1 answer:

iVinArrow [24]3 years ago

8 0

Step-by-step explanation:

what is to be done ? just that addition ?

first, let's all bring to pure fractions.

7 2/3 = (7×3 + 2)/3 = 23/3

2 1/5 = (2×5 + 1)/5 = 11/5

then let's bring all to a common denominator (bottom part of the fraction).

for this, we need to find the first (or any) common multiple of the 2 denominators (here 3 and 5).

if you have no other idea, just multiply them with each other (in our case here this is also the smallest common multiple) : 3×5 = 15.

so, we bring both fractions into the form of .../15. then it is easy to add them.

23/3 = x/15

x = 23/3 × 15 = 23×15/3 = 23×5 = 115

23/3 = 115/15

11/5 = x/15

x = 11/5 × 15 = 11×15/5 = 11×3 = 33

11/5 = 33/15

now the addition :

115/15 + 33/15 = 148/15 or 9 13/15

this is the result, as it cannot be further simplified.

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Answer:

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Step-by-step explanation:

In this question, we are asked to calculate how much will be received for 17 coins , with each coin having a specific value in the US currency.

Obviously, there are four coins, so let’s proceed to get the amount he gets per type of coins.

For the m coin, she has 3 pieces. One m coin has a value of $10, then the amount of coins she makes on the m coins will be 3 * 10 = $30

For the a coin, he has 7 pieces. One m coin has a value of $5, then the amount of coins she makes on the a coins will be 7 * 5 = $35

For the t coin, he has 5 pieces. One t coin has a value of $50, then the amount of coins she makes on the t coins will be 5 * 50= $250

For the h coin, she has 2 pieces. One h coin has a value of $100, then the amount of coins she makes on the h coins will be 2* 100 = $200

The total amount made on the 17 coins would thus be mathematically equal to;

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4 years ago

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3 years ago

[30 POINTS] Please help!!!

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Answer:

Part 1) $y=1.5x+5$

Part 2) $y=-(2/3)x-(11/3)$

Part 3) $y=0.25x+2.75$

Part 4) $y=-2x+5$

Part 5) $y=0.5x-1$

Part 6) The graph in the attached figure

Step-by-step explanation:

Part 1) we have

$m=3/2=1.5$

$point(-2,2)$

The equation of the line into point slope form is equal to

$y-y1=m(x-x1)$

substitute

$y-2=1.5(x+2)$

$y=1.5x+3+2$

$y=1.5x+5$

Part 2) we know that

If two lines are perpendicular

then

the product of their slopes is equal to minus one

$m1*m2=-1$

the slope of the line 1 is equal to

$m1=1.5$

Find the slope m2

$1.5*m2=-1$

$m2=-2/3$

Find the equation of the line 2

we have

$m2=-2/3$

$point(-7,1)$

The equation of the line into point slope form is equal to

$y-y1=m(x-x1)$

substitute

$y-1=(-2/3)(x+7)$

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$y=-(2/3)x-(11/3)$

Part 3) we have

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$point(1,3)$

The equation of the line into point slope form is equal to

$y-y1=m(x-x1)$

substitute

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$y=0.25x-0.25+3$

$y=0.25x+2.75$

Part 4) we have

$m=-2$

$b=5$ -----> y-intercept

we know that

The equation of the line into slope intercept form is equal to

$y=mx+b$

substitute the values

$y=-2x+5$

Part 5) we have that

The slope of the line 4 is equal to $-2$

the slope of the line perpendicular to the line 4 is equal to

$-2*m=-1\\m=(1/2)=0.5$

therefore

in this problem we have

$m=0.5$

$point(-2,-2)$

The equation of the line into point slope form is equal to

$y-y1=m(x-x1)$

substitute

$y+2=0.5(x+2)$

$y=0.5x+1-2$

$y=0.5x-1$

Part 6)

using a graphing tool

see the attached figure

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