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3 years ago

Write a related subtraction fact for 9+3=12. Explain how the two facts are related

Mathematics

2 answers:

seropon [69]3 years ago

8 0

9-3=6 that is how it's
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postnew [5]3 years ago

5 0

12-3=9 they switch up and it still equals the same thing

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CHECK MY ANSWERS ASAP

AlexFokin [52]

Question 1:

For this case we must rewrite the following equation:

$-3x + y = 5$

If we add 3x to both sides of the equation we have:

$y = 5 + 3x$

Thus, we have that an equivalent expression is option C.

Answer:

Option C

$y = 5 + 3x$

Question 2:

For this case we must solve the following equation:

$-5x + 5 = -40$

Subtracting 5 from both sides of the equation we have:

$-5x = -40-5\\-5x = -45$

Dividing between -5 on both sides of the equation we have:

$x = \frac {-45} {- 5}\\x = 9$

Answer:

Option B

7 0

3 years ago

Rebecca has 6 yards of ribbon. It takes 3/8 yard to wrap one package. How many packages can rebecca wrap

Nastasia [14]

Answer:

Step-by-step explanation:

6 x 8 = 48

48 / 3 = 16

Rebecca can only wrap 16 packages with 6 yards of ribbon.

8 0

3 years ago

Emi computes the mean and variance for the population data set 87, 46, 90, 78, and 89. She finds the mean is 78. Her steps for f

Natali [406]

The error she made is Emi evaluated (46-78)² as - (32)² is wrong.

<h3>What is variance?</h3>

Variance is calculated as the average of squared differences of the data observations from the mean.

Given data: 87, 46, 90, 78, and 89.

Here, the first Emi find the difference of 89 - 78 correctly.

Now, Emi division is also correct.

Now, Emi evaluated (46 - 78)^2 as -(32)^2 is wrong.

(46-78)² = (-32)²

Here she used the negative sign outside.

Hence, Emi evaluated (46 - 78)^2 as -(32)^2 is wrong.

Learn more about this concept here:

brainly.com/question/9899363

#SPJ1

7 0

2 years ago

.. Use a graphing calculator to graph the functions /(x) = Vx - 3+ 5

topjm [15]

Ahhhhhhhh ok yeh so your answer is 374.65

7 0

3 years ago

Find an expression to represent the area of the triangle below.

fredd [130]

Answer:

$A = \dfrac{8x}{3x + 1}$

Step-by-step explanation:

$A = \dfrac{bh}{2}$

$A = \dfrac{16x^2}{9x^2 - 1} \times \dfrac{6x^2 - 5x + 1}{2x^2 - x} \times \dfrac{1}{2}$

$A = \dfrac{(16x^2)(6x^2 - 5x + 1)}{2(9x^2 - 1)(2x^2 - x)}$

$A = \dfrac{(16x^2)(2x - 1)(3x - 1)}{2(3x - 1)(3x + 1)(x)(2x - 1)}$

$A = \dfrac{8x}{3x + 1}$

7 0

3 years ago