3 years ago

3(4+6)-16 what does it equal and how did you get the answer

Mathematics

1 answer:

Alecsey [184]3 years ago

5 0

Answer:

Step-by-step explanation:

you can do this two ways:

First:

$3(10)-16\\=30-16\\=14$

Second:

Distribute the 3 first

$\\12+18-16\\=30$

You might be interested in

These four numbers are plotted on a number line: -2/3 5/8 -3/5 -1/2 Which is the correct ordering on the number line, from left

Yuki888 [10]

Answer:

-2/3 -3/5 -1/2 3/8

..................……

3 0

3 years ago

What is the solution to the equation 3/4y+1/4=1+y , given the replacement set {−4, −3, −2} ?

ivann1987 [24]

Answer:

It's -3 mate

Step-by-step explanation:

I just did the test

8 0

3 years ago

Question 2 of 10

mariarad [96]

Answer: (4x−9)(3x+4) D

Step-by-step explanation:

Factor 12x2−11x−36

12x2−11x−36

=(4x−9)(3x+4)

5 0

3 years ago

Write the equation of a line perpendicular to 9xplus7yequals6 that passes through the point (9,negative 7).

andrew11 [14]

$k:\ y=m_1x+b_1\\\\l:\ y=m_2x+b_2\\\\k\ ||\ l\iff m_1=m_2\\\\k\ \perp\ l\iff m_1m_2=-1$

We have:

$k:\ 9x+7y=6\ \ \ |-9x\\\\7y=-9x+6\ \ \ \ |:7\\\\y=-\dfrac{9}{7}x+\dfrac{6}{9}\to m_1=-\dfrac{9}{7}\\\\l:\ y=m_2x+b\\\\l\ \perp\ k\iff-\dfrac{9}{7}m_2=-1\ \ \ \ |\cdot\left(-\dfrac{7}{9}\right)\\\\m_2=\dfrac{7}{9}\to\ l:\ y=\dfrac{7}{9}x+b$

We know. The line l passes throught the point (9, -7). Substitute the coordinates of the poin to the equation of line l :

$-7=\dfrac{7}{9}\cdot9+b\\\\-7=7+b\ \ \ \ |-7\\\\b=-14$

$y=\dfrac{7}{9}x-14\ \ \ \ |\cdot9\\\\9y=7x-126\ \ \ \ |-9y\ |+126\\\\7x-9y=126$

Answer: $y=\dfrac{7}{9}x-14\to7x-9y=126$

7 0

3 years ago

(100 Points)last one i promise lol

erik [133]

Answer:

40.35

Step-by-step explanation:

First find the discount

97 * 60%

97 *.6 = 58.2

Subtract the discount to find the new price

97-58.20 =38.80

Next find the tax

38.80 * 4%

38.80 * .04

1.55

We add the tax to the sales price

38.8+1.55

40.35

7 0

3 years ago

Read 2 more answers