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ollegr [7]
3 years ago
9

What is x^2+3x-28 factored

Mathematics
2 answers:
kap26 [50]3 years ago
4 0

Answer: x^(2)-3x-28=0

Step-by-step explanation:

Ghella [55]3 years ago
4 0

Answer:

x = 4

x =  - 7

Step-by-step explanation:

x^2+3x-28 \\ x ^{2}  + 7x - 4x - 28 \\ x(x + 7) - 4(x  + 7) \\ (x - 4)(x + 7) \\ x - 4 = 0 \:  \:  \: or \:  \:  \: x + 7 = 0 \\ x = 4 \:  \:  \:  \:  \:  \:  \:  \:  \:  \: or \:  \:  \: \:  x =  - 7

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The formula to convert Celsius to Fahrenheit is FC +32. Convert 87°F to
melisa1 [442]

Answer:

31°

Step-by-step explanation:

To convert Fahrenheit to Celsius is C= (F-32) * 5/9

So first do parenthesis 87-32= 55

Next multiply that number by 5/9 which is 30.55555555

Then round your answer = 31°

4 0
2 years ago
Question: The meaning of four consecutive even numbers is 15.
nasty-shy [4]
First, a bit of housekeeping:

<span>The meaning of four consecutive even numbers is 15.  Wouldn't that be "mean," not meaning?  Very different concepts!

The greatest of these numbers is _______ a^1

"a^1" means "a to the first power.  There are no powers in this problem statement.  Perhaps you meant just "a" or "a_1" or a(1).


The least of these numbers is ______a^2.
No powers in this problem statement.  Perhaps you meant a_2 or a(2)


In this problem you have four numbers.  All are even, and there's a spacing of 2 units between each pair of numbers (consecutive even).

The mean, or arithmetic average, of these numbers is (a+b+c+d) / 4, where a, b, c and d represent the four consecutive even numbers.  Here this mean is 15.  The mean is most likely positioned between b anc c.


So here's what we have:  a+b+c+d
                                         ------------- = 15
                                                 4

This is equivalent to a+b+c+d = 60.

Since the numbers a, b, c and d are consecutive even integers, let's try this:

a + (a+2) + (a+4) + (a+6) = 60.    Then 4a+2+4+6=60, or 4a = 48, or a=12.

Then a=12, b=14, c=16 and d=18.  Note how (12+14+16+18) / 4 = 15, which is the given mean.

We could also type, "a(1)=12, a(2)=14, a(3) = 16, and a(4) = 18.


</span>
8 0
3 years ago
Can someone explain how to do this and add the formula please
lisabon 2012 [21]

Answer:

5 is 35 and 6 is 50

Step-by-step explanation:

To solve 5, you need to know how many degrees is the line, which is 180 because lines are 180 degrees. You then subtract 110 from 180 which equals to 70. What you have left now is 2k. A number times 2 will equal to 70, so k=35.

For 6, if you ever see two lines intersecting each other, it means that it is 360 degrees. We already have one angle, which is 120. The other angle is d+70 degrees, and any angle that is reflecting the other angle will have the same value. So, d equals 50

(sorry if you still can't understand it I'm not good at English

6 0
2 years ago
Find the value of x in the triangle.
Hatshy [7]

Answer:

<h2>          x = 67°</h2>

Step-by-step explanation:

The sum of measures of angles in triangle is allways 180°

So:

   x + 53° + 60° = 180°  {subtract 113° from both sides}

   x = 67°

3 0
2 years ago
Can u guys help me with all of those ?'s plz I don't get it
hram777 [196]
I can't see the math problems.
4 0
3 years ago
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