3 years ago

3.

Mathematics

1 answer:

artcher [175]3 years ago

7 0

Answer:

14 or 15

Step-by-step explanation:

14 squared is 196

15 squared is 225

I memorized these, my math tutor recommends to memorize the squares up to 20. :)

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Let x^2+18x=44 . What values make an equivalent number sentence after completing the square?

Lostsunrise [7]

To find the final term to compete the square you need to divide the 'x' term by 2 then square it

$x^2 +18x + = 44+ \\ x^2+18x+( \frac{18}{2} )^2=44+( \frac{18}{2} )^2 \\ x^2+18x+9^2=44+9^2 \\ x^2+18x+81=44+81 \\ (x+9)^2=125$ - equivalent equation

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3 years ago

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Which of the following equations has only one solution? x2 + 4x + 4 = 0 x2 + x = 0 x2 - 1 = 0

Nady [450]

<span>you can solve all quadratic equations using this method:
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x^2 + 4x + 4 = 0
---
the above quadratic equation is in standard form, with a=1, b=4, and c=4
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to solve the quadratic equation, by using the quadratic formula, copy and paste this:
1 4 4
into this solver: https://sooeet.com/math/quadratic-equation-solver.php
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this quadratic has ONE real root (the x-intercept), which is:
x = -2
x = -2
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x^2 + x = 0
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the above quadratic equation is in standard form, with a=1, b=1, and c=0</span>

4 0

3 years ago

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HELP MEEEEEEE PLEASE

dedylja [7]

The first option and the third one

8 0

3 years ago

Three friends each have some ribbon. Carl has 54 inches of ribbon,Tino has 13.5 feet of ribbon, and Baxter has 3.5 yards of ribb

deff fn [24]

Answer:

342 inches, or 28.5 feet, or 9.5 yards

Step-by-step explanation:

It is perhaps easiest to start with all the dimensions in inches.

13.5 ft = (13.5 ft)(12 in/ft) = 162 in

3.5 yd = (3.5 yd)(36 in/yd) = 126 in

Then the total of the lengths of ribbon is ...

54 in + 162 in + 126 in = 342 in

Converting to feet, we get ...

(342 in)/(12 in/ft) = 28.5 ft

And converting to yards, we get ...

(342 in)/(36 in/yd) = 9.5 yd

The total length of ribbon is 342 inches, or 28.5 feet, or 9.5 yards.

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3 years ago

0.07 is closest to 0,1, or 1/2?

gulaghasi [49]

0 is the right answer.

3 0

3 years ago