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3 years ago

I. Do not get it plz help

Mathematics

1 answer:

brilliants [131]3 years ago

8 0

You need to do 20 times 18, then mulitply the product of that to 5

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Solve x^2 +14x=15 by completing the square

ivanzaharov [21]

Answer:

x = -15 and x = 1

Step-by-step explanation:

Since we have to use the complete the square method, we first need to rewrite the equation in the form $x^{2}+2ax+a^{2}=(x+a)^{2}$ .

This results in $x^{2} + 14x + 7^{2} = 15 + 7^{2}$ .

Next, we simplify the equation to get $x^{2} +14x+7^{2} = 64$ .

Factoring the left side gives us $(x+7)^{2} = 64$ .

Finally we solve the equations: $x+7=\sqrt{64}$ and $x+7=-\sqrt{64}$ .

This gives us x=1, and x=-15

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3 years ago

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The graph of the function f(x) = (x+6)(x+2) is shown.

oksano4ka [1.4K]

Answer:1 2 and 4

Step-by-step explanation:

I just did it

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3 years ago

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How many millimeters are there in 3.5 m

malfutka [58]

Answer:

3500

Step-by-step explanation:

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2 years ago

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The function rule C = 40n + 210 relates the number of months n to cost in dollars C of a phone plan and budget phone. Make a tab

Viefleur [7K]

Answer:

Input - Output

2 - $290

12 - $690

24 - $1170

Step-by-step explanation:

Cost after n months:

The cost after n months is given by the following function:

$C(n) = 40n + 210$

After 2 months:

This is C(2). So

$C(2) = 40(2) + 210 = 80 + 210 = 290$

After 12 months:

This is C(12). So

$C(12) = 40(12) + 210 = 480 + 210 = 690$

After 24 months:

This is C(24). So

$C(24) = 40(24) + 210 = 960 + 210 = 1170$

Table:

Input - Output

2 - $290

12 - $690

24 - $1170

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3 years ago

The figure shows three quadrilaterals on a coordinate grid:

Salsk061 [2.6K]

Answer:

Q and W are similar but not congruent.

Step-by-step explanation:

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3 years ago