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3 years ago

HELP ME OUT PLEASE !!! WILL NAME BRAINLIEST:D

Mathematics

2 answers:

MaRussiya [10]3 years ago

8 0

Answer:

the answer is B -9

Step-by-step explanation:

if you do the equation and add and subtract them ull therefore get -9

Klio2033 [76]3 years ago

8 0

This represents: -4x + 6 = 2x -12

Add 12 to both sides

-4x + 18 = 2x

Next, add 4x to each side

18 = 6x

Divide both sides by 6

3 = x

C) 3

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China's population is 1.446 x 10 to the ninth power. Marshal islands population

Maru [420]

1.446 x 10 = 14.46
Hope I helped :D

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4 years ago

Dalia owns a gravel pit. She took a random sample of rocks and counted 585858 sedimentary rocks, 213213213 metamorphic rocks, an

goblinko [34]

step One

Find the total number of rocks in the gravel pit

58 + 213 + 522 = 793

Step Two

Set up the probabilities.

P(Sedimentary) = 58 / 793 = 0.0731

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3 0

3 years ago

Graph each linear equation y equals negative 3x - 2

den301095 [7]

Answer: y=-(3x-2)= -3x+2

The intercept with y is 2

The intercept with x is 2/3

4 0

3 years ago

Read 2 more answers

the length of each side of the square increases by 2.5 inches to form a new square with a perimeter of 70 inches. The length of

lozanna [386]

15 inches.

2.5*4=10

70-10 equal 60

60/4=15.

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3 years ago

Read 2 more answers

Solve for X and Y: Y=2+7x and -2x+6y=-28

Furkat [3]

Answer:

x=-1 and y=-5

Step-by-step explanation:

ሰላም!

Given expressions let them given as two equations

y=2+7x....... equation (1)
-2x+6y=-28..... equation (2)

Thus, substitute y=2+7x into equation (2)

$- 2x + 6(2 + 7x) = - 28 \\$

simplify it

$- 2x + 12 + 42x = - 28 \\ 40x + 12 = - 28$

subtract 12 from both sides

$40x + 12 - 12 = - 28 - 12 \\ 40x = - 40$

divide both sides by 40

$\frac{40x}{40} = \frac{ - 40}{40} \\ x = - 1$

Therefore, as we get the value of x=-1 substitute it to equation (1) and solve for variable y

$y = 2 + 7x \\ y = 2 + 7( -1 ) \\ y = 2 - 7 \\ y = - 5$

To be more sure make a cross check on both of the two expressions

Thus,

1) y=2+7x .... substitute y=-5 and x=-1 and check if it is equal

-5=2+7(-1)

-5=2-5

-5=-5

2)-2x+6y=-28... substitute and check

-2(-1)+6(-5)=-28

2-30=-28... (-a)(-b)=ab

-28=-28

Hope it helps!

6 0

2 years ago