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inna [77]
3 years ago
14

2 factors of 28 add up to 9 what are they

Mathematics
2 answers:
bogdanovich [222]3 years ago
5 0
It is 2 and it is 7 the two factors your welcome  
salantis [7]3 years ago
5 0
Think of all the factors that equal 28 and line them up smallest to greatest.

1, 2, 4, 7, 14, 28

Look at all the numbers, and try adding some of them together.

Let's start with 1.

1+2=3 ×
1+4=5 ×
1+7=8 ×

Well, 1 isn't one of the factors because no matter which factor you add it to, it'll be either larger or smaller than 9.

Let's try 2.

2+1=3 ×
2+4=6 ×
2+7=9 √

The factors 2 & 7 added together equal 9.

Hope this helps.
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Solve the inequality.<br> - 6 &lt; 2x - 4 &lt;4
ale4655 [162]

Answer:

-1 < x < 4.

Step-by-step explanation:

- 6 < 2x - 4 <4

2x - 4 < 4

2x < 8

x < 4.    Also we have:

2x - 4 > -6

2x > -2

x > -1.

5 0
3 years ago
More points for easy questions
Veseljchak [2.6K]

Answer:

"the sum of the cube of 6x and 2"

Step-by-step explanation:

We see that only the expression of 6x is being cubed, not the entire expression of (6x)³ + 2.

The first blank must apply to both these terms 6x and 2, so the word can't be cubed. Instead, because we're finding the sum of these two, the word should be "sum".

The second blank should apply to only the 6x because we've already described the relationship of 6x and 2. So, since we are cubing 6x, the word here should be "cube".

The final sentence should read:

"the sum of the cube of 6x and 2"

6 0
3 years ago
Read 2 more answers
Can someone help please and thank you!
kondor19780726 [428]

Answer:

10 and 40 I think maybe?

Step-by-step explanation:

I hope this is correct if not I am so so so so so so sorry

5 0
2 years ago
Read 2 more answers
The area of the base of the oblique pentagonal pyramid is 50 cm^2 and the distance from the apex to the center of the pentagon i
Verdich [7]
The complete question in the attached figure

Part a) 
we know that
ABC is a right triangle
∠ACB=45°
AC=hypotenuse------> 6√2 cm
sin 45=AB/AC-----> AB=AC*sin 45----> AB=6√2*√2/2----> AB=6 cm

the answer part a) is
AB=6 cm

Part b) 
we know that
volume of the pyramid=(1/3)*Area of the base*height
area of the base=50 cm²
height=6 cm
so
volume of the pyramid=(1/3)*50*6----> 100 cm³

the answer part b) is 
100 cm³

5 0
3 years ago
Y=x^2 -9x at x = 4 Find an equation of the tangent an an equation of the normal
Montano1993 [528]

The tangent line to <em>y</em> = <em>f(x)</em> at a point (<em>a</em>, <em>f(a)</em> ) has slope d<em>y</em>/d<em>x</em> at <em>x</em> = <em>a</em>. So first compute the derivative:

<em>y</em> = <em>x</em>² - 9<em>x</em>   →   d<em>y</em>/d<em>x</em> = 2<em>x</em> - 9

When <em>x</em> = 4, the function takes on a value of

<em>y</em> = 4² - 9•4 = -20

and the derivative is

d<em>y</em>/d<em>x</em> (4) = 2•4 - 9 = -1

Then use the point-slope formula to get the equation of the tangent line:

<em>y</em> - (-20) = -1 (<em>x</em> - 4)

<em>y</em> + 20 = -<em>x</em> + 4

<em>y</em> = -<em>x</em> - 24

The normal line is perpendicular to the tangent, so its slope is -1/(-1) = 1. It passes through the same point, so its equation is

<em>y</em> - (-20) = 1 (<em>x</em> - 4)

<em>y</em> + 20 = <em>x</em> - 4

<em>y</em> = <em>x</em> - 24

3 0
3 years ago
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