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2 years ago

9. What is the correct factorization of x2 + 13x + 30?

Mathematics

1 answer:

Readme [11.4K]2 years ago

4 0

Answer:

(x+3)(x+10)

Step-by-step explanation:

sorry I don't know how I should explain it....

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Helppp pleaseee

Oliga [24]

B.28 Years Hope it help

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3 years ago

Y varies directly with x, and y = 5 when x = 4. What is the value of x when y = 8?

Tomtit [17]

As y varies directly with x, there is a proportionality constant. As x increases by that certain constant, y also increases. We equate:
y = kx
where k = proportionality constant.
Given the condition, y = 5 when x = 4, then we solve for k:
5 = k(4)
k = 5/4 or 1.25
When y = 8, then
8 = (5/4)(x)
x = 8/(5/4) = (8)(4/5) = 32/5 or 6.4 (ANSWER)

7 0

3 years ago

Find the two numbers that have a sum of 49 and a difference of 1/2

NeX [460]

Answer:

$49.5 , -0.5$

Step-by-step explanation:

$a + b =49\\a - b = 0.5\\a= 49.5\\b= -0.5$

6 0

1 year ago

Read 2 more answers

Write the standard form of the equation of the line through the pair of points (6,3) and (-7,7)

timofeeve [1]

Step-by-step explanation:

steps are in the picture above.

<h3>Note:if you need to ask any question please let me know.</h3>

3 0

2 years ago

The sum of three numbers $x$ ,$y$, $z$ is 165. When the smallest number $x$ is multiplied by 7, the result is $n$. The value $n$

babymother [125]

You're given

x + y + z = 165

7x = n

n = y - 9

n = 9 + z

and you want to find xyz.

Solve the last three equations for x, y, and z :

7x = n → x = n/7

n = y - 9 → y = n + 9

n = 9 + z → z = n - 9

Substitute x, y, and z into the first equation and solve for n :

n/7 + (n + 9) + (n - 9) = 165

n/7 + 2n = 165

n + 14n = 1155

15n = 1155

n = 77

Now solve for x, y, and z :

x = 77/7 = 11

y = 77 + 9 = 86

z = 77 - 9 = 68

Then the product is

xyz = 11 • 86 • 68 = 64,328

6 0

2 years ago