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3 years ago

Convert 13 over 2 to a decimal using long division.

Mathematics

1 answer:

Serhud [2]3 years ago

8 0

Answer:

6.5

Step-by-step explanation:

You divide.

So like 13 / 2 is 13 divided by 2 and is 6 remainder 1.

You can write this as 6 1/2.

1/2 is 0.5

So 13/2 is 6.5

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Which two substances bind using a lock-and-key mechanism?

kherson [118]

Answer:

enzyme and substrate. reactant and substrate. substrate and product.

Step-by-step explanation:

4 0

3 years ago

25 points help please just give the y intercept and slope

ycow [4]

Answer:

eq 1 yint = 7

eq2 yint= 4

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7 0

2 years ago

Help me pls!!!!!!!!!

Dominik [7]

Answer:

$x^2+18=-9x : x = -3, x = -6$

Step-by-step explanation:

$x^2+18=-9x$

Add 9x to both sides:

$x^2+18+9x=-9x+9x$

Simplify:

$x^2+9x+18=0$

Solve with the quadratic formula:

For a quadratic equation of the form $ax^2+bx+c=0$ the solutions are:

$x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

For $a=1,\:b=9,\:c=18:\quad x_{1,\:2}=\frac{-9\pm \sqrt{9^2-4\cdot \:1\cdot \:18}}{2\cdot \:1}$

$x =\frac{-9 + \sqrt{9^2-4\cdot \:1\cdot \:18}}{2\cdot \:1} : -3$

$x =\frac{-9 - \sqrt{9^2-4\cdot \:1\cdot \:18}}{2\cdot \:1} : -6$

The solution to the quadratic equation are:

$x=-3,\:x=-6$

Hope I helped. If so, may I get brainliest and a thanks?

Thank you, have a good day!

6 0

3 years ago

How do you determine the perimeter of a square

Ivanshal [37]

Answer:

You add all of the sides... or you can multiply one side with 4.

Hope this helps! Please mark as brainliest.

Congrats on your first question using brainly!

3 0

3 years ago

Read 2 more answers

Sally's summer punch recipe is a combination of lemonade and fruit punch. Sally uses 6 cups of lemonade for every 8 cups of frui

disa [49]

Answer:

August made the recipe using the correct ratios

Step-by-step explanation:

we know that

Sally uses 6 cups of lemonade for every 8 cups of fruit punch

using proportion

Find out the number of cups of fruit punch for 15 cups of lemonade

Let

x ----> the cups of fruit punch

$\frac{6}{8}=\frac{15}{x}\\ \\x=8*15/6\\ \\x= 20\ cups\ fruit\ punch$

The total cups of liquid is the sum of the cups of lemonade plus the cups of fruit punch

$15+20=35\ cups$

therefore

August made the recipe using the correct ratios

4 0

3 years ago