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lutik1710 [3]
3 years ago
12

Which of the following value of x make this equation true? 2x + 3 = 11 x = x = 3 x = 4 x = 8

Mathematics
1 answer:
AlekseyPX3 years ago
8 0

Answer:

x = 4

Step-by-step explanation:

1) Substitute the given x values, by substitution you replace x with the numbers provided. We do this because since the numbers are already given you are to find the correct value of y.

2) Plug in the numbers provided.

Start with x = 3

2(3) + 3 = 11

2 * 3 = 6

6 + 3 = 9

x = 3 is not a correct choice

2) Use the second option and determine if the second option is correct.

x = 4

2(4) + 3 = 11

4 * 2 = 8 + 3 = 11

This option is correct because the value of x makes the equation true.

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Peter mixes 4 1/2 cups of orange juice, 2 1/4 of ginger ale and 6 1/3 cups of strawberry lemonade to make some punch. What is th
ruslelena [56]
To add these amounts together, we must first find their least common multiple in order to get common denominators (b/c when you add fractions, the denominators must be the same).

We'll start by listing some of their multiples.
To do this, count by whatever the denominator is:
4 1/2 (denominator is 2): 2 4 6 8 10 12 14
2 1/4 (denominator is 4): 4 8 12 16
6 1/3 (denominator is 3): 3 6 9 12 15

Look and see which is the first multiple that all three denominators have. Circle them if it helps you. In this case, it's 12.

So now we have to multiply the denominators by whatever number it takes to reach 12, and multiply by the same number to the numerator:

4 1/2 (times 6 to both top and bottom) =
4 6/12

2 1/4 (times 3) = 2 3/12

6 1/3 (times 4) = 6 4/12

Add all these fractions together, and you get 12 13/12, which is equal to 13 1/12.

Thus, Peter makes a total of 13 1/2 cups.

Hope this made sense! tell me if anything is confusing/incorrect :))
8 0
3 years ago
What is the area of triangle DEF
kolezko [41]

Answer:

76.5 cm²

Step-by-step explanation:

Given the triangles are similar , then

ratio of sides = a : b , so

ratio of areas = a² : b²

Here ratio of sides = 9 : 13.5 = 2 : 3

ratio of areas = 2² : 3² = 4 : 9

let x be the area of Δ DEF and using proportion

\frac{4}{34} = \frac{9}{x} ( cross- multiply )

4x = 306 ( divide both sides by 4 )

x = 76.5

The area of Δ DEF = 76.5 cm²

3 0
3 years ago
Ms. Smith is giving a test worth 100 points and contains 40 questions. There are two-point and four-point questions on the test.
Tanya [424]

x for 2 pointquestion y for 4 point question

x+y=40

2x+4y=100

x=40-y

80-2y+4y=100

2y=100-80

2y=20

y=10

x=40-10=30

4 0
3 years ago
Read 2 more answers
Plz help both problems right answer!!
Aneli [31]
3:5=m:60
m= 36
1. B)36

22in30 min
22+22=44
44in 1hr
44x3=132 in 3hr 
2.  D)132
7 0
3 years ago
Write the point-slope form of the equation of the line through the given points through: (-3,-1) and (-2,5)?
nevsk [136]

The point-slope form of the equation of the line through the given points through: (-3,-1) and (-2,5) is y + 1 = 6x + 18

<u>Solution:</u>

Given, two points are (-3, -1) and (-2, 5)

We have to find that a line that passes through the given two points.

First let us find the slope of the line that passes through given two points.

<em><u>The slope of line "m" is given as:</u></em>

\text { slope of line } m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

\text { where, }\left(x_{1}, y_{1}\right) \text { and }\left(x_{2}, y_{2}\right) \text { are two points on line. }

Now, let us find the line equation using point slope form

y-y_{1}=m\left(x-x_{1}\right)

where m is slope

\begin{array}{l}{\text { Then, line equation } \rightarrow y-(-1)=6(x-(-3))} \\\\ {\rightarrow y+1=6(x+3)} \\\\ {\rightarrow y+1=6 x+18}\end{array}

Hence the point slope form is y + 1 = 6x + 18

7 0
3 years ago
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