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4 years ago

I NEED help on this problem

Mathematics

2 answers:

soldier1979 [14.2K]4 years ago

6 0

Ok so you multiply -3 on both sides so on the right it is -48 and then the left the -3 is cancelled out and so you are left with -6+c . You add 6 on both sides and so it is -42=c so c=-42

Vlada [557]4 years ago

3 0

16 = (-6 +c) /-3
16/1 = (-6+c)/ -3
16 x -3 = 1(-6+c)
-48 = -6 + c
-c = 48 -6
-c = 42
:-1 :-1
C = -42

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Someone please help asap! Thank you!

nekit [7.7K]

Answer:

The answer to your question is:

Perimeter = 26.5 units

Area = 22.5 units²

Step-by-step explanation:

Data

A (5, 9)

B (8, 0)

C (0, 9)

Formula

d = $\sqrt{(x2 - x1)^{2} + (y2 - y1)^{2} }$

dAB = $\sqrt{(8 - 5)^{2} + (0 - 9)^{2} }$

dAB = $\sqrt{3^{2} + 9^{2} }$

dAB = $\sqrt{90}$

dBC = $\sqrt{(0 - 8)^{2} + (9 - 0)^{2} }$

dBC = $\sqrt{8^{2} + 9^{2} }$

dBC = $\sqrt{145}$

dAC = $\sqrt{(0 - 5)^{2} + (9 - 9)^{2} }$

dAC = $\sqrt{5^{2} + 0^{2} } \\$

dAC = $\sqrt{25} = 5$

Perimeter = $\sqrt{90} + \sqrt{145} + 5$

Perimeter = 26.5 units

Area = 1/2 [ ( 5x0) + (8x9) + (0 x 9) - (5x 9) - (0x 0) - (8x9)]

= 1/2 [ 0 + 72 + 0 - 45 - 0 - 72]

= 1/2 [-45]

= 45/2

= 22.5 units²

4 0

4 years ago

Rina is 6x + 3:8 feet tall and Ryan is 5x + 1/8 feet tall. How much taller is Rina than Ryan?

Dimas [21]

Answer: Rina is $x+\dfrac{1}{4}$ feet taller than Ryan.

Step-by-step explanation:

Given, the height of Rina = $6x+\dfrac{3}{8}$ feet

The height of Ryan = $5x+\dfrac{1}{8}$ feet

To find : How much taller is Rina than Ryan?

Clue : Rina is taller than Ryan.

For that , we need to check the difference of the height between Ryan and Rina

i.e. (height of Rina) - (height of Ryan)

$=6x+\dfrac{3}{8}-(5x+\dfrac{1}{8})\\\\=6x+\dfrac{3}{8}-5x-\dfrac{1}{8}\\\\=x+\dfrac{3-1}{8}\\\\=x+\dfrac{2}{8}\\\\=x+\dfrac{1}{4}$

Hence, Rina is $x+\dfrac{1}{4}$ feet taller than Ryan.

8 0

4 years ago

A cash register contains $5 bills and $50 bills with a total value of $1060. If there are 32 bills total, then how many of each

kozerog [31]

Answer:

12 5 dollar bills

20 50 dollar bills

Step-by-step explanation:

Let x = number of five dollar bills

Let y = number of fifty dollar bills

We have a total of 32 bills

x+y = 32

The total amount is 1060

5x+50y = 1060

We have 2 equations and 2 unknowns

x+y = 32

5x+50y = 1060

Multiply the first equation by -5 so we can eliminate x

-5x -5y = -5*32

-5x -5y =-160

Add this to the second equation

5x+50y = 1060

-5x -5y =-160

------------------------

45 y = 900

Divide each side by 45

45y/45 = 900/45

y = 20

There are 20 50 dollar bills

x+y = 32

x+20 = 32

Subtract 20 from each side

x+20-20 = 32-20

x = 12

There are 12 5 dollar bills

8 0

3 years ago

What's the answer? 3-6+9-12+15-18+...+297-300

Vlad1618 [11]

Um well are u just adding and doing subtraction if so I think the answer is 12 idk I used calculator also I would need to know the answer choices I really don’t know if I’m right so don’t come at me

3 0

3 years ago

Find four consecutive whole numbers whose sum is 74

Rina8888 [55]

Answer:

17, 18, 19, 20

Explanation:

Let the numbers be x, x + 1, x + 2, x + 3

Their sum is equals to 74

x + x + 1 + x + 2 + x + 3 = 74 (group the variables)

x + x + x + x + 1 + 2 + 3 = 74 (simplify)

4(x) + 6 = 74 (subtract both sides by 6)

4x = 68 (divide both sides by 4)

x = 17

Other numbers:

x + 1 = 17 + 1 = 18

x + 2 = 17 + 2 = 19

x + 3 = 17 + 3 = 20

4 0

2 years ago

Read 2 more answers