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SashulF [63]
3 years ago
13

What is the solution to the system of equations?

Mathematics
1 answer:
Studentka2010 [4]3 years ago
3 0

\begin{cases}3x + y = 3 \\2x + y = 7 \end{cases} \\ \Leftrightarrow \begin{cases}x =  - 4 \\2( - 4)  + y = 7 \end{cases} \\ \Leftrightarrow \begin{cases}x =  - 4 \\ y = 15\end{cases} \\ \Rightarrow (x,y)=(-4,15)

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Estimate the range of 1,294 × 48 use a hyphen (-) to separate the two numbers
spayn [35]

Answer:

54000-65000

Step-by-step explanation:

round the numbers first down to 1200 and 45, and multiply, then round up for the larger, like 1300 and 50 to get your answer.

7 0
3 years ago
Not every whole number is an integer true or false
lora16 [44]
Integers are like whole numbers, but they also include negative numbers so true
8 0
3 years ago
Dairon needs 20 pieces of string 3/8 inch in length. He cut a 4 7/8 inch piece of string into pieces that are 3/8 of an inch lon
AysviL [449]

From the information given, Dairon already had a string that is  4 7/8 inches long.

We first write or  simplify  3/8 and 4 7/8 in their decimal fraction forms.

3/8 is written as 0.375 and 4 7/8 is written as 4.875

We can now find out how many pieces he cut from the string (that was 4 7/8 inches), so:

4.875 ÷ 0.375 = 13

So he got 13 pieces  of string. He wants 20 pieces, so;

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5 0
3 years ago
Linesl,mand n are parallel to each other and p is a transversal​
butalik [34]
<h3>Answer:  126 degrees</h3>

========================================================

Explanation:

Since L and M are parallel lines, this means x+y = 180 due to the same side interior angles theorem. Some books refer to these angles as consecutive interior angles.

If x+y = 180, then y = 180-x.

Plug this into the equation your teacher gave you

x/y = 3/7

x/(180-x) = 3/7

7x = 3(180-x) ... cross multiply

7x = 540 - 3x

7x+3x = 540

10x = 540

x = 540/10

x = 54

Use this to find y

y = 180-x

y = 180-54

y = 126

Then notice how x/y = 54/126 = 3/7, which helps confirm we have the correct x and y values.

Divide both parts of the first fraction by 18 to fully reduce.

Now because angles y and z are alternate exterior angles, this must mean z = y = 126 degrees

4 0
3 years ago
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mezya [45]
38/16 is the answer
8 0
3 years ago
Read 2 more answers
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