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Slav-nsk [51]
4 years ago
5

What should be added to both sides of this equation to solve for the variable? r + (-12) = 19

Mathematics
2 answers:
Usimov [2.4K]4 years ago
6 0
12

So,
r+ -12+ 12 = 19+ 12
r+ 0 = 31
R=31
Slav-nsk [51]4 years ago
5 0

Answer:

12

Step-by-step explanation:

Then the -12 and +12 will cancel out, so you're left with a clean isolated r on the left:

r -12 +12 = 19 + 12

r = 31

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This bc it’s really really really hard and I can’t figure it out
Ket [755]

Answer:

-4/5

Step-by-step explanation:

3/5+(-7/5)

-4/5

5 0
2 years ago
Identify the factors of the function <br> y = 3x2 - 7x – 10
NikAS [45]

Answer:

(x + 1)(3x - 10)

Step-by-step explanation:

Given

3x² - 7x - 10

Consider the factors of the product of the x² term and the constant which sum to give the coefficient of the x- term.

product = 3 × - 10 = - 30 and sum = - 7

The factors are + 3 and - 10

Use these factors to split the x- term

3x² + 3x - 10x - 10 ( factor the first/second and third/fourth terms )

3x(x + 1) - 10(x + 1) ← factor out (x + 1) from each term

(x + 1)(3x - 10), thus

y = (x + 1)(3x - 10) ← in factored form

8 0
3 years ago
Need to show my work
dalvyx [7]

Answer:

\large\boxed{x=\dfrac{5}{4},\ y=\dfrac{15}{16}}

Step-by-step explanation:

\left\{\begin{array}{ccc}y=\dfrac{3}{4}x&(1)\\\dfrac{5}{2}x+2y=5&(2)\end{array}\right\\\\\text{Substitute}\ (1)\ \text{to}\ (2):\\\\\dfrac{5}{2}x+2\left(\dfrac{3}{4}x\right)=5\\\\\dfrac{5}{2}x+\dfrac{3}{2}x=5\\\\\dfrac{5+3}{2}x=5\\\\\dfrac{8}{2}x=5\\\\4x=5\qquad\text{divide both sides by 4}\\\\x=\dfrac{5}{4}

\text{Put the value of}\ x\ \text{to (1)}\\\\y=\dfrac{3}{4}\cdot\dfrac{5}{4}\\\\y=\dfrac{15}{16}

4 0
4 years ago
Read 2 more answers
The graph shows the amount of money earned by a teacher for running an after-school homework help session. How much does the tea
True [87]

Answer:

From the looks of the graph, it seems that the teacher earned either $40 a hour or $20 a hour.

Step-by-step explanation:

6 0
3 years ago
Find the slope of the line that's passing through (2,2) and (-1, -2)
irga5000 [103]
Slope=(y2-y1)/(x2-x1)
=((-2-)2)/((-1)-2)
= (-4) / (-3)
= 4/3

the answer is A

hope I can help u
5 0
3 years ago
Read 2 more answers
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