All categories

3 years ago

What is this and what is the answer 9a + 10(6a-1)

Mathematics

1 answer:

Nadusha1986 [10]3 years ago

7 0

9a + 10(6a-1)

distribute

9a +10*6a -10*1

9a +60a -10

add like terms

69a-10

You might be interested in

In its first month of operation, Swifty Corporation purchased 270 units of inventory for $8, then 370 units for $9, and finally

astra-53 [7]

Answer:

$640

Step-by-step explanation:

3 0

3 years ago

Will crown the correct answers brainliest 3x

Solnce55 [7]

Answer :

(1) $\frac{1}{x}+\frac{1}{y}=\frac{y+x}{xy}$

(2) $\frac{1}{5x}+\frac{1}{3y}=\frac{3y+5x}{15xy}$

(3) $\frac{1}{7x}-\frac{1}{2y}=\frac{2y-7x}{14xy}$

(4) $\frac{2}{5x}+\frac{3}{7y}=\frac{6y+15x}{21xy}$

(5) $\frac{7}{11x}-\frac{1}{33y}=\frac{231y-11x}{363xy}$

(6) $\frac{1}{2x}+\frac{3}{x}-\frac{1}{7y}=\frac{7y+42y-2x}{14xy}$

Step-by-step explanation :

(1) The given expression is: $\frac{1}{x}+\frac{1}{y}$

$\frac{1}{x}+\frac{1}{y}=\frac{y+x}{xy}$

(2) The given expression is: $\frac{1}{5x}+\frac{1}{3y}$

$\frac{1}{5x}+\frac{1}{3y}=\frac{3y+5x}{(5x)\times (3y)}=\frac{3y+5x}{15xy}$

(3) The given expression is: $\frac{1}{7x}-\frac{1}{2y}$

$\frac{1}{7x}-\frac{1}{2y}=\frac{2y-7x}{(7x)\times (2y)}=\frac{2y-7x}{14xy}$

(4) The given expression is: $\frac{2}{5x}+\frac{3}{7y}$

$\frac{2}{5x}+\frac{3}{7y}=\frac{(2\times 3y)+(3\times 5x)}{(5x)\times (7y)}=\frac{6y+15x}{21xy}$

(5) The given expression is: $\frac{7}{11x}-\frac{1}{33y}$

$\frac{7}{11x}-\frac{1}{33y}=\frac{(7\times 33y)-(1\times 11x)}{(11x)\times (33y)}=\frac{231y-11x}{363xy}$

(6) The given expression is: $\frac{1}{2x}+\frac{3}{x}-\frac{1}{7y}$

$\frac{1}{2x}+\frac{3}{x}-\frac{1}{7y}=\frac{(x\times 7y)+(3\times 2x\times 7y)-(2x\times x)}{(2x)\times (x)\times (7y)}=\frac{7xy+42xy-2x^2}{14x^2y}=\frac{7y+42y-2x}{14xy}$

7 0

3 years ago

Please help me please

MissTica

Answer:

not all of them are proportional because they do not all equal the same.

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Pizazz manufactures a 5.0 oz. energy drink of the same name. Because the cans are so small, consumers are concerned that they ar

omeli [17]

Answer:

The LCL of the R-chart starts from the origin ( i.e. zero value ) while the LCL of an X -chart did not start from the origin

LCL of R-chart = 0 * 0.84533 = 0

LCL of R-chart = 75.128

Step-by-step explanation:

Given data:

number of observations = 15

sample size ( m ) = 6

sum of sample mean = 80.20 ounces

sum of sample range ( R ) = 12.68 ounces

Determine the control limits of an x-bar and R-chart

<em>for an R-chart </em>

LCL of R-chart = D3 * R(bar) ---- ( 1 )

where : m = 6 , D3 = 0 , R = 12.68

R(bar) = 0.84533

back to equation 1

LCL of R-chart = 0 * 0.84533 = 0

<em>for an X-chart </em>

LCL of X-bar) = ( mean ) - (m x R-bar)

= 80.20 - ( 6 * 0.84533 )

= 75.128

The LCL of the R-chart starts from the origin ( i.e. zero value ) while the LCL of an X -chart did not start from the origin

3 0

3 years ago

Your crew can pave two driveways in a day. You work five days per week but take off 2 weeks each year for holidays and vacations

Juli2301 [7.4K]

500.
2 a day times five days a week, times 50 weeks, (each year is 52 weeks, take two off) this equals 500.

5 0

3 years ago

Read 2 more answers