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3 years ago

Victor sold cupcakes and cookies yesterday. Each cupcake sold for $2.25 and each cookie sold for $0.50. At the end of the

Mathematics

1 answer:

lidiya [134]3 years ago

3 0

answer:number of cupcakes sold is 13 Number of cookies sold is 27

Step-by-step explanation:

Let x represent the number of cupcakes that Victor sold. Let y represent the number of cookies that Jane sold. Each cupcake sold for $2.25 and each cookie sold for $0.50. At the end of the day, This mean Victor had 2.25x 0.5y = 42.75 - - - - - - - - - -1she sold 40 cupcakes and cookies combined, it means thatx y = 40Substituting x = 40 - y into equation 1, it becomes2.25(40 - y) 0.5y = 42.7590 - 2.25y 0.5y = 42.75- 2.25y 0.5y = 42.75 - 90- 1.75y = - 47.25y = - 47.35/-1.75y = 27x = 40 - yx = 40-27 = 13

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△ABC ≅ △DEF, EF = x 2 - 7, and BC = 4x - 2.

Artist 52 [7]

Answer:

Therefore the value of x is 5.

Step-by-step explanation:

Given:

△ABC ≅ △DEF,

EF = x 2 - 7, and

BC = 4x - 2.

To Find:

the values of x. = ?

Solution:

△ABC ≅ △DEF ........Given

If two Triangles are congruent then the Corresponding Parts of Congruent Triangles are Congruent.

∴ BC ≅ EF ...................CPCTC

Substituting the values we get

$4x-2=x^{2}-7\\x^{2}-4x-5=0$

Now By Factorizing we get

$x^{2}-5x+x-5=0\\x(x-5)+1(x-5)=0\\(x+1)(x-5)=0\\x+1=0\ or\ x-5=0\\x=-1\ or\ x=5\\x\ cannot\ be\ negative\\\therefore x=5$

Therefore the value of x is 5.

8 0

4 years ago

Can i plz have some help with this

Klio2033 [76]

Answer:

I think they're vertical angles

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4 0

3 years ago

Read 2 more answers

Can someone please help???? BASIC ALGEBRA problem

user100 [1]

Answer:

3. 9x+5+x-7=25

4. 10x-2=25

5. 10x=27

Step-by-step explanation:

3. 9x+5+x-7=25

4. 10x-2=25

10x=25+2

5. 10x=27

x=27÷10

x=2.7

7 0

3 years ago

In a pet store the number of fish is 120 more than three times the number of reptiles. If the pet store has 210 fish, how many r

polet [3.4K]

Let r represent reptiles
210=3r-120
330=3r
110=r

110 reptiles

4 0

3 years ago

The sanitation department calculated that last year each city resident produced approximately 1. 643 × 103 pounds of garbage. Th

mote1985 [20]

Answer:

(d) 428,820,000 pounds of garbage

Step-by-step explanation:

Your calculator or spreadsheet can give you the product of two numbers expressed in scientific notation.

(1.643×10^3 lb/resident) × (2.61×10^5 residents) = 4.28823×10^(3+5) lb

≈ 428.82×10^6 lb

= 428,820,000 lb . . . of garbage

4 0

2 years ago