Evaluate 2x − 4 for x = 9.

Answer:

6.57, 6.38, 6.125, 6.057, 6.03, 6.01

Answer:

A

Step-by-step explanation:

The denominator of all the options are the same. So we just need to look at the numerator

[tex](9^2)^{9/10}=9^{2\cdot (9/10)}=9^{9/5}[/tex]

The answer is the first option

Answer:

Step by step answers are key,... and they're below,... ;->

Step-by-step explanation:

This is your equation:

[tex]5 \frac{6}{30} + 1\frac{3}{4}[/tex]

Make both fractions improper fractions (this makes them easier to work with) All you did to convert your two mixed number into improper fractions is:

Multiply the denominator (the bottom number in a fraction in this case 30) by the number not in the fraction (5), 30x5=150 and then add the product (150) to the numerator (the top number in a fraction (which in this case is 6))

[tex]5\frac{6}{30} = \frac{156}{30}[/tex]

Do the same to the other mixed number (turning it into a improper fraction), Multiply the 4x1=4, add the product to the numerator 4+3=7 and then you have your second improper fraction

[tex]1\frac{3}{4} = \frac{7}{4}[/tex]

Your new equation:

[tex]\frac{156}{30} +\frac{7}{4}[/tex]

Now you need to get both denominators the same so you can add the together,... the easiest way to do this is to multiply the two denominators together,... 30x4=120

[tex]\frac{x}{120} + \frac{x}{120}[/tex]

But how do we know what the numerator are to be? What you have to do is the following,... you had to multiply 30 by 4 to get to 120, so you have to multiply the 156 by 4 to make an equivilant fraction,... 156x4=624

[tex]5\frac{6}{30} = \frac{156}{30} = \frac{624}{120}[/tex]

Like wise you had to multiply 4 by 30 to get to 120 so you have to multiply the numerator by 30 to make the fraction hold the same value,... 7x30=210

[tex]1\frac{3}{4} = \frac{7}{4} =\frac{210}{120}[/tex]

Now all that is left is to add:

[tex]\frac{624}{120} +\frac{210}{120} =\frac{834}{120}[/tex]

The answer is 835/120 simplify is or 6 19/20 or 6.95

Hope that was explination enough,... and have a SUPER-EXTRA-ORDINARILY-AMAZINGLY-AWESOME day,...

Chow,...!

Answer:

n=3/4

Step-by-step explanation:

[tex]15 - (n - 3) = 3(n + 5) \\ 15 - n + 3 = 3n + 15 \\ - n + 3 = 3n \\ - n - 3n = - 3 \\ - 4n = - 3 \\ n = \frac{3}{4} [/tex]

[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]

[tex] \huge \boxed{\mathfrak{Answer} \downarrow}[/tex]

[tex] \large \boxed{\bf \: n=\frac{3}{4}=0.75}[/tex]

[tex] \huge \boxed{\mathfrak{Explanation} \downarrow}[/tex]

[tex] \large \sf \: 15 - ( n - 3 ) = 3 ( n + 5 )[/tex]

[tex] \large \sf \: 15-n-\left(-3\right)=3\left(n+5\right) [/tex]

[tex] \large \sf \: 15-n+3=3\left(n+5\right) [/tex]

[tex] \large \sf \: 18-n=3\left(n+5\right) [/tex]

[tex] \large \sf \: 18-n=3n+15 [/tex]

[tex] \large \sf \: 18-n-3n=15 [/tex]

[tex] \large \sf \: 18-4n=15 [/tex]

[tex] \large \sf \: -4n=15-18 [/tex]

[tex] \large \sf-4n=-3 [/tex]

[tex] \large \sf \: n=\frac{-3}{-4} \\ = > \: \large \boxed{\bf \: n = \frac{3}{4} = 0.75} [/tex]

Answer:

135

27 × 5= 135

Hope it helps you!

Step-by-step explanation:

#1

[tex]\\ \sf\longmapsto \dfrac{5}{4.2}=1.19=1.2[/tex]

#2

[tex]\\ \sf\longmapsto \dfrac{5}{6.2}=0.8[/tex]

#3

[tex]\\ \sf\longmapsto \dfrac{9}{18}=\dfrac{1}{2}=0.5[/tex]

#4

[tex]\\ \sf\longmapsto \dfrac{52}{3.5038}=1.48=1.5[/tex]

#5

[tex]\\ \sf\longmapsto \dfrac{23}{1.8078}=0.127=0.13[/tex]

#6

[tex]\\ \sf\longmapsto \dfrac{15}{0.5655}=0.26=0.3[/tex]

Answer:

Brainliest is appreciated

-4, -1, 5

Step-by-step explanation:

when x = -1

y= 3x - 1

3(-1) - 1

-3 -1

-4

when x = 0

y = 3x - 1

3(0) - 1

0 - 1

-1

when x = 2

y = 3x -1

3(2) - 1

6 - 1

5

Step-by-step explanation:

[tex]y = 3x - 1[/tex]

Putting x = -1

[tex]y = 3( - 1) - 1[/tex]

[tex]y = - 3 - 1[/tex]

[tex]y = - 4[/tex]

Putting x = 0

[tex]y = 3(0) - 1[/tex]

[tex]y = 0- 1[/tex]

[tex]y = -1[/tex]

Putting x = 2

[tex]y = 3(2) - 1[/tex]

[tex]y = 6 - 1[/tex]

[tex]y = 5[/tex]

Answer:

ha+ha = haaaaa

XD

Step-by-step explanation:

>3

Answer:

85/6 sq in × 5/2 in = 425/12 cu in.

Answer:

4 hours

Step-by-step explanation:

if 1/3 of an hour = 10 miles

You need to get it to 120 miles.

120/10 = 12

And 12 x 1/3 = 4

Answer:

The first one

Step-by-step explanation:

You have a negative slope, so it should be falling or going downwards. Your y-intercept is 4, so it should hit 4 on the y-axis. Hope this helped!

Answer:

The first graph

Step-by-step explanation:

The slope is -2/3

slope is rise over run

y intercept equals 4

Answer:

im not sure if this is correct 16.97056274 hope it helped ;-;

Step-by-step explanation:

Answer:

use synthetic division method

[tex]-7x+11=19+11+12x[/tex]

[tex]19x=19\implies x=1[/tex]

There is one solution and also that solution is a real number.

Hope this helps :)

Answer:

I believe it's "one Solution"

Step-by-step explanation:

Real numbers things like pi and (algerbraicly) Square roots. Plus, this question deffo has a solution... The only one that makes sense is one solution.

Answer:

5(3t)-7(2)=0

15t-14=0

15t=14

t=14/15

Answer:

15t - 14

Step-by-step explanation:

[tex]5(3t) - 7(2)[/tex]

[tex]5 \times (3t) - 7 \times 2[/tex]

[tex]5 \times 3t - 14[/tex]

[tex] = 15t - 14[/tex]

Answer:

14

Step-by-step explanation:

Answer:

the final answer of 4 should be 24 7/12.

Step-by-step explanation:

Answer:

plug in -3 and 2 into the equations you should get two different numbers

Step-by-step explanation:

3(-3)+2(-3)=24

3(2)+2(2)=24

Molar mass of H_20

[tex]\\ \sf\longmapsto 2(1u)+16u[/tex]

[tex]\\ \sf\longmapsto 16u+2u[/tex]

[tex]\\ \sf\longmapsto 18g/mol[/tex]

Now

[tex]\boxed{\sf No\;of\:moles=\dfrac{Given\:Mass}{Molar\:Mass}}[/tex]

[tex]\\ \sf\longmapsto No\:of\;moles=\dfrac{0.0018}{18}=0.0001mol[/tex]

Now

[tex]\boxed{\sf No\;of\;molecules=No\:of\;moles\times Avagadro\:No}[/tex]

[tex]\\ \sf\longmapsto 0.0001\times 6.023\times 10^{23}[/tex]

[tex]\\ \sf\longmapsto 0.0000166\times 10^{23}[/tex]

[tex]\\ \sf\longmapsto 1.6\times 10^{18}molecules[/tex]

Step-by-step explanation:

send the picture of the question

Answer:

f(-4) = - 16

Step-by-step explanation:

f(-4) = (-4)2 + 8(-4)

f(-4) = 16 + -32

f(-4) = - 16

Answer:

f(−4)  = -16

Step-by-step explanation:

f(x)=x^2+8x

f(−4)= [tex]-4^{2}[/tex] + 8 (-4)

       = 16 -32

       = -16

Answer:

[tex]y= \frac{7-6x}{8}[/tex]

Step-by-step explanation:

The value of y in in terms of is y = (7-6x)/8

What is Mathematical function ?

Function is defined as the expression or relation between any given two variables such as x and y and there must be an independent variable and dependent variable.

In other words the function represents the graph between x and y that is for each value of x there exist one value of y but here there is no restriction in values of y that is y can have infinity values.

Given equation is 8y+6x=7 and to solve for the value of y subtract 6x both the side and then divide 8 both the side to get the value of y as shown :

8y+6x=7

8y +6x-6x=7-6x

8y = 7-6x

y = (7-6x)/8

Therefore, the value of y in in terms of is y = (7-6x)/8

check and know more about equations here :

https://brainly.com/question/10003183

#SPJ2

Answer:

$450

Step-by-step explanation:

If the tax rate is 8% that would mean it is 1.08 and you can multiply 1.08 with 450 and get 486 as the answer.

Answer:

50% of 320 is equal to 80% of 200

Step-by-step explanation:

[tex]\sf{50\% \times 320}[/tex]

[tex]\sf{ = \frac{50}{100} \times 320 }[/tex]

[tex]\sf{ = \frac{16000}{100} }[/tex]

[tex] = \sf{160}[/tex]

-

[tex]\sf{160 \div 80\%}[/tex]

[tex]\sf{ = 160 \div \frac{80}{100} }[/tex]

[tex]\sf{ =\cancel{ 160} \times \frac{100}{\cancel{80}} }[/tex]

[tex]\sf{ = 2 \times 100}[/tex]

[tex] = \boxed{\sf{\underline{\purple{200}}}}[/tex]

Answer:

50% of 320 is equal to 80% of 200.

Step-by-step explanation:

Given,

50% of 320 is equal to 80% of a number (let it be x)

Now,

50% of 320

= 50% × 320

= 50/100 × 320

= 50/10 × 32

= 5 × 32

= 160

Also now,

160 is equal to 80% of x.

80% of x = 160

80% × x = 160

80/100 × x = 160

8/10 × x = 160

4/5 × x = 160

4/5x = 160

x = 160 ÷ 4/5

x = 160 × 5/4

x = 40 × 5

x = 200

Sum of interiors =exterior

[tex]\\ \sf\longmapsto x+60=110[/tex]

[tex]\\ \sf\longmapsto x=110-60[/tex]

[tex]\\ \sf\longmapsto x=50[/tex]

2(x - 3) - 4(x - 6) = 7x

2x - 6 - 4x + 24 = 7x

-2x + 18 = 7x

-2x - 7x = -18

-9x = -18

x = -18 ÷ (-9)

x = 2

5(x - 6) = 8

5x - 30 = 8

5x = 8 + 30

5x = 38

x = 38/5