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Alja [10]
3 years ago
13

The square of a number is equal to 24 more than twice the number. Find the negative number. Please help me with this problem. 

Mathematics
1 answer:
alisha [4.7K]3 years ago
4 0
N^2 = 24 + 2n
n^2 - 2n - 24 = 0
(n-6)(n+4) = 0
n = 6 , n = - 4
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Which of the following equations describes the line shown below? Check all
nexus9112 [7]

Answer:

C and D

Step-by-step explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

Calculate m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (- 3, - 6) and (x₂, y₂ ) = (9, 3) ← 2 points on the line

m = \frac{3+6}{9+3} = \frac{9}{12} = \frac{3}{4}

Using (a, b ) = (9, 3 ) , then

y - 3 = \frac{3}{4} (x - 9) → C

Using (a, b ) = (- 3, - 6 ), then

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y + 6 = \frac{3}{4} (x + 3) → D

4 0
3 years ago
C is the circumcenter of APQR.<br> PC=3x+7, RC=5x-15, &amp; QC=51-X<br> x=[?]
amm1812

Answer:

x = 11

Step-by-step explanation:

C is the circumcenter of \triangle PQR

\implies PC=QC=RC (Radii of same circle)

\implies RC=QC

\implies 5x-15=51-x

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8 0
3 years ago
Plz help and explain ty
mel-nik [20]
4x = 8, so x = 2
5y + 4 = 4, so 5y = 0, so y = 0
(2,0)
8 0
3 years ago
So I’m not great in math at all I spent 15 min crying because I don’t get it so anyone pls help
Yuri [45]

Answer:

A

Step-by-step explanation:

The area (A) of a triangle is calculated as

A = \frac{1}{2} bh ( b is the base and h the perpendicular height )

Here b = 13 and h = 4 , thus

A = \frac{1}{2} × 13 × 4 = \frac{1}{2} × 52 = 26 units² → A

3 0
3 years ago
Read 2 more answers
What is the sum of the series?​
Mamont248 [21]

Answer:

45

Step-by-step explanation:

Since the values are relatively small substitute i = 1 to 5 into 3i and sum

(3 × 1) + (3 × 2) + (3 × 3) + (3 × 4) + (3 × 5)

= 3 + 6 + 9 + 12 + 15

= 45

6 0
3 years ago
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