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3 years ago

Someone help PLEASE

Mathematics

1 answer:

Iteru [2.4K]3 years ago

7 0

Answer:

Step-by-step explanation:

The perfect square:

$(a+b)^2=a^2+2ab+b^2$

We have

$y^2+14y+49=0\\\\y^2+2(y)(7)+7^2=0\\\\(y+7)^2=0\iff y+7=0\qquad\text{subtract 7 from both sides}\\\\\boxed{y=-7}$

We have

$y^2+16y+64=0\\\\y^2+2(y)(8)+8^2=0\\\\(y+8)^2=0\iff y+8=0\qquad\text{subtract 8 from both sides}\\\\\boxed{y=-8}$

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Answer:

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3 years ago

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What is 17 divided by 3 without remainders.

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3 years ago

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the relationship between the x- and y- values in each table is linear. write a function. find the amount and rate of change. (5

Doss [256]

(5)

Since, the relationship is linear

so, we can use point slope form of line and find equation of line

we can select any two points

first point is (4,10)

so, x1=4 , y1=10

second point is (7,17.5)

so, x2=7 , y2=17.5

now, we can find slope

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now, we can plug values

$m=\frac{17.5-10}{7-4}$

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now, we can use point slope form of line

$y-y_1=m(x-x_1)$

now, we can plug values

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we get

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Initial amount:

It is the value of y when x=0

so, we can plug x=0 and find y

$y=2.5\times 0$

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Rate of change:

we know that rate of change is slope

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Since, the relationship is linear

so, we can use point slope form of line and find equation of line

we can select any two points

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so, x1=2 , y1=29

second point is (5,41)

so, x2=5 , y2=41

now, we can find slope

$m=\frac{y_2-y_1}{x_2-x_1}$

now, we can plug values

$m=\frac{41-29}{5-2}$

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now, we can use point slope form of line

$y-y_1=m(x-x_1)$

now, we can plug values

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Initial amount:

It is the value of y when x=0

so, we can plug x=0 and find y

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we know that rate of change is slope

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3 years ago

Ending 7:43 elapsed time 37 minutes

Novosadov [1.4K]

Starting time:
Ending time: 7:43

Elapsed time: 37 minutes.

We are 43 minutes into 7 o'clock. 37 minutes ago, it would have been 43 - 37, or 6 minutes.

The starting time is 7:06

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3 years ago

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