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OverLord2011 [107]
3 years ago
5

Solve the system by substitution. y = 3x + 14 y = X

Mathematics
2 answers:
boyakko [2]3 years ago
6 0

Answer:

x = 7 and y = -7

Step-by-step explanation:

use substitution method

lys-0071 [83]3 years ago
4 0

Answer:

\boxed{x = -7~~and~~ y =-7}

Step-by-step explanation:

y = 3x + 14

y = x

.

x = 3x + 14

3x - x = -14

2x = -14

x = \frac{-14}{2}

x = -7

.

y = x

y = -7

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The ratio of the bake time for a pepperoni pizza (P) and a cheese pizza (C) is modeled by the equation: P = 3C - 2. A.) If a sma
Elena L [17]

Answer:

34 minutes

Step-by-step explanation:

Given:

Ratio of time for which Pepperoni pizza and cheese pizza should be baked is given as:

P = 3C - 2

Where P is the time for which pepperoni pizza should be baked and

C is the time for which Cheese pizza should be baked.

Also, it is given that a small Cheese pizza should be baked for 12 minutes.

In other words, we are given that: C=12\ min

To find:

For how long small pepperoni pizza should be baked ?

In other words,

P=?

Solution:

Let us put the value of C in the equation of the model.

P = 3C - 2

\Rightarrow P = 3\times 12 - 2\\\Rightarrow P = 36 - 2\\\Rightarrow P = \bold{34\ min}

Therefore, a small pepperoni pizza should be baked for <em>34 minutes</em>.

5 0
2 years ago
11. Let f(x) = 2x² + 7x + 5
Lady_Fox [76]

Answer:

(x+1)(2x+5)

Step-by-step explanation:

f(x) = 2x² + 7x + 5

Factor the expression by grouping. First, the expression needs to be rewritten as 2x²+ax+bx+5. To find a and b, set up a system to be solved.

a+b=7

ab=2×5=10

Since ab is positive, a and b have the same sign. Since a+b is positive, a and b are both positive. List all such integer pairs that give product 10.

1,10

2,5

Calculate the sum for each pair.

1+10=11

2+5=7

The solution is the pair that gives sum 7.

a=2

b=5

2x²+7x+5 as (2x²+2x)+(5x+5).

(2x²+2x)+(5x+5)

Factor out 2x in the first and 5 in the second group.

2x(x+1)+5(x+1)

Factor out common term x+1 by using distributive property.

(x+1)(2x+5)

7 0
2 years ago
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Answer:

15.0

Step-by-step explanation:

we are finidng the adjacent angle, they have given us the opposite and the missing adjacent side so we use tan

tan25=7/x

since x is at the bottom then switch

x= 7/tan25

x= 15. 012

6 0
3 years ago
Read 2 more answers
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o-na [289]
Should be 72 ounces, as he used 23/24 of the blueberries and 69/72 = 23/24.
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Answer:

Piece one would equal to 14" and piece two would be 42" because 42 is three times the length of 14

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