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3 years ago

Use the distributive property to remove the parentheses -9(-4x+3w-1)

Mathematics

2 answers:

Margarita [4]3 years ago

7 0

Answer:

36x - 27w + 9

Explanation:

Multiply the outside by everything on the inside

pashok25 [27]3 years ago

7 0

Answer:36x-27w+9

Step-by-step explanation:

A negative times a negative is positive and a negative times a positive is negative so you take -9 and times it by each number. -4x, 3w,-1 Keep it in the same order

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Solve 16x+9=9y−2x16x+9=9y−2x for y

denis23 [38]

16x + 9 = 9y-2x Add 2x to both sides
18x + 9 = 9y Divide both sides by 9
2x + 1 = y Switch the sides to make it easier to read
y = 2x + 1

6 0

3 years ago

Find x for the problem

oee [108]

Answer:

14.4

Step-by-step explanation:

sin x = 24/30

x = sin^-1 (24/30) = 53.13

sin 53.13 = x/18

x = sin 53.13 x 18 = 14.4

6 0

3 years ago

Mohamed and Li Jing were asked to find an explicit formula for the sequence -5, -25, -125, -625,....

Nuetrik [128]

Answer:

Li Jing's formula i.e. $\boxed{g_n=-5\cdot \:5^{n-1}}$ is right.

Step-by-step explanation:

Considering the sequence

$-5,\:-25,\:-125,\:-625,...$

A geometric sequence has a constant ratio r and is defined by

$g_n=g_0\cdot r^{n-1}$

$\mathrm{Compute\:the\:ratios\:of\:all\:the\:adjacent\:terms}:\quad \:r=\frac{g_{n+1}}{g_n}$

$\frac{-25}{-5}=5,\:\quad \frac{-125}{-25}=5,\:\quad \frac{-625}{-125}=5$

$\mathrm{The\:ratio\:of\:all\:the\:adjacent\:terms\:is\:the\:same\:and\:equal\:to}$

$r=5$

So, the sequence is geometric.

$\mathrm{The\:first\:element\:of\:the\:sequence\:is}$

$g_1=-5$

$r=5$

$g_n=g_1\cdot r^{n-1}$

$\mathrm{Therefore,\:the\:}n\mathrm{th\:term\:is\:computed\:by}\:$

$g_n=-5\cdot \:5^{n-1}$

Therefore, Li Jing's formula i.e. $\boxed{g_n=-5\cdot \:5^{n-1}}$ is right.

8 0

4 years ago

The shoes that Sofia wanted to buy at the mall were marked down from $30 to $24. What is the percentage of discount?

Nataliya [291]

30-24=6
6/30=1/5 aka 20%

The answer is 20%

Hope this helps.

8 0

4 years ago

The measure of two angles in a triangle are shown in the diagram what equation can be used to find the value of x

earnstyle [38]

Answer:

Step-by-step explanation:

5 0

3 years ago