3 years ago

How to do rise over run graph

Mathematics

1 answer:

Pani-rosa [81]3 years ago

4 0

Answer:

rise is going up or down depending on the y and run is going left or right on the graph, it depends on your x

Step-by-step explanation:

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Find the positive base $b$ in which the equation $5_b \cdot 23_b = 151_b$ is valid.

DanielleElmas [232]

Answer:

b=7

Step-by-step explanation:

We want to determine the positive base b in which:

$5_b \cdot 23_b = 151_b$

The easiest way to approach this is to convert all the numbers to base 10.

$5_b=5Xb^0=5\\23_b =(2Xb^1)+(3Xb^0)=2b+3\\151_b=(1Xb^2)+(5Xb^1)+(1Xb^0)=b^2+5b+1\\Therefore:\\5_b \cdot 23_b = 151_b\\5(2b+3)=b^2+5b+1\\10b+15=b^2+5b+1\\b^2+5b+1-10b-15=0$

$b^2-5b-14=0$

Next, we factorize the resulting expression.

$b^2-5b-14=b^2-7b+2b-14=0\\b(b-7)+2(b-7)=0\\(b-7)(b+2)=0\\b-7=0\: or \: b+2=0\\b=7\: or \: b=-2$

The positive value of b for which the equality hold is 7.

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3 years ago

A recipe for cookies calls for 3/5 of a cup of sugar per batch. Jackie uses 12 3/5 cups of sugar to make multiple batches of coo

Vitek1552 [10]

She made 21 batches! Can I have brainlyest please?

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3 years ago

Ahmad has $x. Abu has $5 more than Ahmad. Razak has twice as much as Abu. Together they have $175. What is the value of x?

Alisiya [41]

Abu X + 5

Razak 2x + 10

Ahmad X

Together 4x + 15

175 - 15 = 160

160 / 4 = 40

X = 40

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3 years ago

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Kameron has 9 video games at his house. This is half as many games as Kevin has. Write an equation that demonstrates the relatio

Illusion [34]

Answer:

The answer is 18

Step-by-step explanation: Because 9 + 9 = 18 so therefore Kameron and Kevin has 27 video game in total :/

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4 years ago

Can anyone help me with my homework

aleksley [76]

Answer:

x = the number

Step-by-step explanation:

15.) 2x + 9 = 25

16.) 3x - 6 = 21

17.) 7x = 12 + 3x

18.) 4x = 18 + x

19.) 2x + 24 = 8x

20.) 30 - x = 4x

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3 years ago