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2 years ago

Can you help me with this.

Mathematics

2 answers:

pentagon [3]2 years ago

7 0

Answer:

i cant see but yes ill comment the answer when i download the file

Step-by-step explanation:

Irina-Kira [14]2 years ago

5 0

Answer:

The answer is "y = 1/4x + 16

Step-by-step explanation:

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Solve the equation 8x -12=5x+15

melamori03 [73]

Add 1212 to both sides
8x=5x+15+128x=5x+15+12
2 Simplify 5x+15+125x+15+12 to 5x+275x+27
8x=5x+278x=5x+27
3 Subtract 5x5x from both sides
8x−5x=278x−5x=27
4 Simplify 8x−5x8x−5x to 3x3x
3x=273x=27
5 Divide both sides by 33
x=273x=273
6 Simplify 273273 to 99
x=9x=9

5 0

3 years ago

Co-ordinate Geometry

saul85 [17]

Answer:

The value of a = 14

Step-by-step explanation:

Given

(x₁, y₁) = (2, 4)

(x₂, y₂) = (6, a)

(x₃, y₃) = (-1, 1)

A = 9 sq.units

Area of a triangle with vertices (x₁, y₁), (x₂, y₂), and (x₃, y₃) is:

$A=\frac{\left|x_1\left(y_2-y_3\right)+x_2\left(y_3-y_1\right)+x_3\left(y_1-y_2\right)\right|}{2}$

substituting the values (x₁, y₁) = (2, 4), (x₂, y₂) = (6, a), (x₃, y₃) = (-1, 1), A = 9 in th formula

$A=\frac{\left|x_1\left(y_2-y_3\right)+x_2\left(y_3-y_1\right)+x_3\left(y_1-y_2\right)\right|}{2}$

$9=\frac{\left|2\left(a-1\right)+6\left(1-4\right)+-1\left(4-a\right)\right|}{2}$

Multiply both sides by 2

$\frac{2\left|2\left(a-1\right)+6\left(1-4\right)-1\left(4-a\right)\right|}{2}=9\cdot \:2$

simplify

$\left|2\left(a-1\right)+6\left(1-4\right)-1\left(4-a\right)\right|=18$

As the area is always positive.

$2\left(a-1\right)+6\left(1-4\right)-1\cdot \left(4-a\right)=18$

$2\left(a-1\right)-18-\left(4-a\right)=18$

Add 18 to both sides

$2\left(a-1\right)-18-\left(4-a\right)+18=18+18$

simplify

$2\left(a-1\right)-\left(4-a\right)=36$

$3a-6=36$

$3a=42$

Divide both sides by 3

$\frac{3a}{3}=\frac{42}{3}$

$a=14$

Thus, the value of a = 14

7 0

2 years ago

Help 1-4 please 94 points

Mice21 [21]

Q1=2 because .5+.5+.5+.5=2
Q2=3 because 3/4 times 4=3
Q3=6 because all of the 1/4 added together =1 plus Q1 and Q2=6
Q4=6 divided by the ammout of bags.

7 0

3 years ago

Read 2 more answers

A prime number is always greater than 1 ?

Nesterboy [21]

Yes, negative numbers cannot be prime

7 0

3 years ago

Read 2 more answers

2 (x-3) +9 greater than or equal to X

KatRina [158]

Equal tooo

Your welcome

8 0

2 years ago