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SpyIntel [72]
2 years ago
11

PLEASE HELP SOLVE THE EQUATION USING ELIMINATION 3x+8y=-5 -2x+2y=18

Mathematics
1 answer:
Alexxx [7]2 years ago
6 0
By elimination:

X=-7 and y=2
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A man bought a pair of jeans for $23.00 a shirt for $14.00 and two ties for $7.98 each. What was the total cost of his clothing
Anna35 [415]

Answer:

$52.96

Step-by-step explanation:

To find the total cost of his clothing, add up the prices of everything he bought.

Jeans: $23.00

Shirt: $14

Ties: 2 ties for $7.98 each.

Each tie costs $7.98, and the man bought two ties. Therefore, multiply 2 and $7.98

2*$7.98 = $15.96

Add all the prices together.

jeans + shirt + ties

$23 + $14 + $15.96

$37 + $15.96

$52.96

The total cost of his clothing is $52.96

4 0
3 years ago
Read 2 more answers
solve for each variable i don’t need work shown just the answers please thank you very much i have 2 hours to get this done
ale4655 [162]

Answer:

(a)

x = 18.5

y = 22.5

(b)

x = 10

Step-by-step explanation:

Solving (a):

7x - 19 and 3x + 14 are interior angles.

So:

7x - 19 + 3x +14 = 180

Collect like terms

7x + 3x = 180 - 14 + 19

10x = 185

x = 18.5

7x - 19 and 5y - 2 are equal angles --- corresponding angles

So:

5y - 2 = 7x - 19

Make 5y the subject

5y  = 7x - 19+2

5y  = 7x -17

Make y the subject

y = \frac{1}{5} (7x - 17)

Substitute x = 18.5

y = \frac{1}{5} (7*18.5 - 17)

y = \frac{1}{5} (112.5)

y = 22.5

Solving (b):

The triangle is right-angled.

So:

5x + 3 + 2x + 17 + 90 = 180

Collect Like Terms

5x + 2x = 180 - 90 - 17-3

7x = 70

x = 10

3 0
3 years ago
Wat is 320,000,000 written in scientific notation
vazorg [7]

Answer:

3.2 x 108

Step-by-step explanation:

it just is lol. also the 8 is to the power of ten

4 0
3 years ago
*MARKING BRAINLIEST*
wlad13 [49]

Answer:

(x+y+z)^2

Step-by-step explanation:

x^2+2x(y+2)+(y+2)^2

there is a factoring rule where

a^2+2ab+b^2=(a+b)^2

So,

a = x

b = y + z

6 0
3 years ago
What is 2 multiplying by 10
notsponge [240]
The answer is 20 because any number multiplied by 10 is going to be the same number but with a zero to the right of it for example 20 times 10 is 200 because u just add the zero to the right of the number have a great day
7 0
2 years ago
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