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Alexandra [31]
3 years ago
12

DOES ANYONE KNOW HOW TO DO THIS???

Mathematics
1 answer:
Anna11 [10]3 years ago
4 0

Answer:

Cost of a pound of chocolate chips: $3.5

Cost of a pound of walnuts: $1.25

Step-by-step explanation:

x - cost of a pound of chocolate chips

y - cost of a pound of walnuts

We create two equations based on the information we have:

3x+2y=13

8x+4y=33

The whole point of these problems os to get rid of x or y. In this question, we can do this by multiplying both sides of the first equation by 2, and then subtracting it from the second equation:

8x+4y=33

6x+4y=26

2x=7

x=3.5

Then we change x for 3.5 in the first equation:

3×3.5+2y=13

10.5+2y=13

2y=2.5

y=1.25

Hope this helps!

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zmey [24]
Use substitution
3x = 2(-6x + 18) + 14
3x = -12x + 36 + 14
3x = -12x + 50
15x = 50, x = 50/15 = 10/3
Solution: x = 10/3
4 0
3 years ago
Can someone please explain?
geniusboy [140]

This is an isosceles triangle. The angles at the base are congruent (they have the same measures).

Look at the picture.

We know: The sum of the measures of angles in a triangle is equal 180°.

Therefore we have the equation:

2x-10+2x-10+3x+25=180       <em>combine like terms</em>

(2x+2x+3x)+(-10-10+25)=180

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x=25

m\angle A=2x-10\to m\angle A=2(25)-10=50-10=40\\\\m\angle C=m\angle A=40\\\\m\angle B=3x+25\to m\angle B=3(25)+25=75+25=100^o

<h3>Answer: D. m∠C = 40</h3>

6 0
3 years ago
I’m trying to figure out What equals 6 x 9?
Assoli18 [71]

Answer:

54

Step-by-step explanation:

6x9=54

6 0
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Read 2 more answers
Need help with the problem
Alborosie
G(-1) = -1

g(1) = - (1 + 1)² + 1 = 5

g(3) = - 1/2 (3) + 2 = 3 1/2


Answer: -1, 5 , 3 1/2
3 0
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Review the proof of tan (A-B) =
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Answer: The expression which must fill in each blank space to complete step 3 is; Choice B; Cos(A)Cos(B).

Which expression must fill in each blank space?

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From observation, it follows that the required expression is; cos(A)sin(B). This is because upon division of each term by the expression, the result is as in Step 4.

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2 years ago
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