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Gelneren [198K]
3 years ago
10

Find the value of x (really need help with this)

Mathematics
1 answer:
qwelly [4]3 years ago
4 0

Answer:

x=-7

Step-by-step explanation:

The sum of the angles of a triangle are 180 degrees

40 + x+57 + 90 =180

Combine like terms

187 +x = 180

Subtract 187 from each side

187-187 +x = 180-187

x = -7

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a store is having a clearance sale where merchandise on the sales racks is reduced by 80% from the original. if a jacket was ori
posledela

The sales price is $15.2

Step-by-step explanation:

Given,

Discount = 80%

Original price = $76

Discount price = 80% of original price

Discount\ price=\frac{80}{100}*76\\Discount\ price=\frac{6080}{100}\\Discount\ price=\$60.8

Sale's price = Original price - Discount price

Sale\ price= 76-60.8\\Sale\ price= \$15.2

The sales price is $15.2

Keywords: Subtraction, percentage

Learn more about subtraction at:

  • brainly.com/question/8280736
  • brainly.com/question/8301701

#LearnwithBrainly

8 0
3 years ago
George is 14 years old. His age is 2 years more than twice his brother, Jhon's age. How old is John?
Luda [366]

Answer:

30

Step-by-step explanation:

14×2=28

28+2=30

i hate riddles

8 0
2 years ago
Explain why it does not matter what letter or symbol is used to find an unknown number
lawyer [7]
In an equation using x is just a place holder because those numbers are variables so it doesn't matter whether it is x or w.
6 0
3 years ago
During a spring clearance sale, Sears advertise 1/4 off the list of Model II microwave ovens and an additional 1/5 off the sale
ozzi

Answer:

$ 75.

Step-by-step explanation:

From the information above,

List price of model II = $240

Sale price of the clearance sale is 1/4 off the list price of Model II microwave oven and additional 1/5 of the sale price for oven that are scratched and dented.

Therefore,

Let the sale price be X,

= (1/4)*(list price) + (1/5)*X

X = (1/4)*(240) + (1/5)*X

X = 60 + (1/5)X

Solving for X,

X - (1/5)X = 60

(4/5)X = 60

X = (60*5)/4

= $75.

4 0
3 years ago
Christoper bought a new watch
Lyrx [107]

Answer:

Any more details?

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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