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olchik [2.2K]
3 years ago
8

Plz answer all these questions for me I really need help

Mathematics
1 answer:
Ber [7]3 years ago
4 0
A is 400

E I don't know soory
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Can any one help me with these 2 plsss :/
Pepsi [2]

Answer:

6) f=45

7) r=57

Step-by-step explanation:

the angles of a triangle will always add up to 180 degrees. Therefore, for the first one the three inside angles have to be 30, 15, and 135. If 135 is the supplementary angle to f, 45 must be the degree of f.

Same idea for the second one. 180-143=37. so 37+86+r=180. solve for r to get 57.

8 0
3 years ago
pedro placed an order with an online nursery for 6 apple trees and 5 azaleas and the order came to $219. the next order for 3 ap
ololo11 [35]
X = apples trees
Y= azaleas


6x + 5y = 219
3x + 4y = 132

-2(3x + 4y = 132)
-6x - 8y = -264
6x + 5y = 219
-3y = -45
-3y/-3 = -45/-3
y = 15

6x + 5y = 219
6x + 5(15) = 219
6x + 75 - 75 = 219 - 75
6x/6 = 144/6
X = 24

The cost for each apple tree is $24 and fit each azalea is $15
4 0
2 years ago
Solve this system of equations<br> 3x+3y+z =-18<br> x-3y+2z=15<br> 8x-2y+3z=7
oee [108]
Just showed this but here again

3 0
2 years ago
Ignore please. Not sure how to delete this<br>.... help?
AVprozaik [17]
Lollllllllllllllllll

5 0
3 years ago
Jon is buying gas for his car. The cost of gas varies directly with the number of gallons of gas. If
Ksivusya [100]

Answer:

56 gallons of gas

Step-by-step explanation:

<em>Jon paid $8.75 for 5 gallons. </em>

<em>So how much does 1 gallon cost?</em>

=> 5 gallons = $8.75

=> 5/5 gallons = $8.75/5

=> <u>1 gallon = $1.75</u>

<em>So how much does 32 gallons cost?</em>

=> 32 gallons = <u>32 * 1.75</u> = $56

6 0
3 years ago
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