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stepladder [879]
3 years ago
9

Select the correct answer.

Mathematics
1 answer:
Vikentia [17]3 years ago
3 0

Answer:

D. It has a single solution: x=-3, y= 26.

Step-by-step explanation:

3x + y=17

Subtract 3x so it is in y=mx+b form. So now it is y= -3x +17

Now plug in

x + 2 (-3x+17) = 49

x + -6x + 34 = 49   (distribute)

-5x = 15 (combine the x terms and subtract 34 on both sides)

x = -3  (divide -5 on both sides to get x alone)

now plug in x into any other equation to get y

x + 2y = 49

-3 + 2y = 49

2y = 52 (add 3 on both sides)

y = 17  (divide 2 on both sides to get y alone)

(-3, 26)

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List all the elements of each set. Set of the values of x that turn equation 0.7(x−7)−4.9=5.7 into a true statement
Paraphin [41]

Answer: 22.14 (22.1428571429)

Step-by-step explanation:

OK

Let's Start with the equation

0.7(x−7)−4.9=5.7

Add 4.9 to both sides

0.7(x-7)=10.6

Divide both sides by 0.7

x-7= 15. 1428571429

Add 7 to both sides

x= 22.1428571429 or 22.14

3 0
3 years ago
After substituting, what is the first operation performed when evaluating 5+(9x-3) - 2 for %=5?
algol13

Answer:

Multiplication.

Step-by-step explanation:

Given:

5+(9x-3)-2

Also x=5

Solution:

It has been given that value of x is 5.

So if we substitute the value of x in given equation the we get;

5+(9\times 5 - 3)-2

Now by PEDMAS, The first operation perform will be the terms in parenthesis and in that too the first will be multiplication.

so we get;

5+(45-3)-2

Now again Solving the terms in parenthesis we get;

5+42-2

Now the next operation will be addition then we get;

47 -2

And finally performing subtraction we get;

45

Hence The first operation performed in given equation is multiplication.

7 0
3 years ago
What two consecutive odd integers have a sum of 88?
Sindrei [870]

Answer:

What two consecutive odd integers have a sum of 88? x + x + 2 = 88 • 2x + 2 = 88 • 2x = 86 • x = 43, x + 2 = 45 • 43 + 45 = 88 • Ans: 43, 45 • They equal 88 and are both odd.

3 0
3 years ago
Hello please help thanks
Vladimir79 [104]

Answer:

Oceans and the Sun.

Step-by-step explanation:

Lakes and the sun is also a good answer, but the question is asking which interact the <em>most</em>, which is the ocean and sun.

We can also rule out the moon since it has nothing to do with the water cycle, so the last two options are also wrong.

5 0
3 years ago
Tell whether the set of ordered pairs {(1,1), (3,3), (5,9), (8,13)} satisfies a linear function. Explain
egoroff_w [7]
Hello! In order to find a linear function without graphing it, we can see if the x-values (domain) has more than one value of y (range) out of this set of ordered pairs. Those ordered pairs represent a linear function, because each x-value does not have more than 1 y-value. Therefore, those points satisfies a function.
7 0
3 years ago
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