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3 years ago

9

Which expression is equivalent to 6 (3x + 4)?

2 answers:

lidiya [134]3 years ago

8 0

18.1+24 hshshgsbsjhssjjs

Elenna [48]3 years ago

6 0

Answer:

18.1+24

Step-by-step explanation:

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Universal Pet house sells vinyl doghouse and treated lumber doghouses. It takes the company 5 hours to build a vinyl doghouses a

LuckyWell [14K]

Answer:

The system of equations is :

Equation 1- $5x+2y=50$

Equation 2- $x+2y=30$

Number of vinyl doghouse = 5

Number of treated lumber doghouse =12.5

Step-by-step explanation:

Let x be the number of vinyl doghouses

y be the number of treated lumber doghouses

→If it takes the company 5 hours to build a vinyl doghouses and 2 hours to build a treated lumber doghouse. The company dedicates 50 hours every week towards assembling and painting doghouses.

Equation 1- $5x+2y=50$

→It takes an additional hour to paint each vinyl doghouse and an additional 2 hours to assemble each treated lumber doghouse. The company dedicates 30 hours every week towards assembling and paining dog houses.

Equation 2- $x+2y=30$

→When we solve these equation we get the number of vinyl doghouse and treated lumber doghouse.

Subtract equation 2 from equation 1

$5x+2y-x-2y=50-30$

$4x=20$

$x=\frac{20}{4}$

$x=5$

Put value of x in equation 2

$x+2y=30$

$5+2y=30$

$2y=25$

$y=\frac{25}{2}$

$y=12.5$

Therefore, number of vinyl doghouse = 5, number of treated lumber doghouse =12.5

4 0

3 years ago

Read 2 more answers

Derek wants to ship items that weigh a total of 7 pounds, and Keisha wants to ship items that weigh a total of 10 pounds. How mu

Rashid [163]

Answer:

what are the shipping costs?

3 0

3 years ago

Solve the rational equation 2x/x-3=3x/x-2

shepuryov [24]

Answer:

x = 0 , 5

Step-by-step explanation:

$\frac{2x}{x-3}=\frac{3x}{x-2}$

Cross multiply,

2x* ( x - 2) = 3x *(x - 3)

2x*x - 2*2x = x*3x - 3*3x

2x² - 4x = 3x² - 9x

subtract 2x² from both sides

-4x = 3x² - 2x² - 9x {Combine like terms}

-4x = x² - 9x

Add 9x to both sides

-4x+ 9x = x²

x² = 5x

x² - 5x = 0

x(x - 5) = 0

x = 0 ; x - 5 = 0

x = 5

5 0

3 years ago

Read 2 more answers

With individual lines at its various windows, a post office finds that the standard deviation for normally distributed waiting t

anastassius [24]

Answer:

H0 : σ²= 7.2²

H1 : σ² < 7.2

We can conclude that the mean waiting time of customers vary less, Than 7.2 minutes.

Step-by-step explanation:

H0 : σ²= 7.2²

H1 : σ² < 7.2²

The test statistic :

X² = [(n - 1)*s² ÷ σ²]

s² = 3.5

n = sample size = 25. ; s²

X² = [(25 -1)*3.5² ÷ 7.2²

X² = (24 * 3.5^2) / 7.2^2

X² = 5.67

Pvalue from Chisquare statistic :

P(X² < 5.67) = 0.000042

Pvalue < α ; we reject the Null.

Hence, we can conclude that the mean waiting time of customers vary less, Than 7.2 minutes.

5 0

3 years ago

What is -|-4| equal to?

goblinko [34]

Simple, it is equal to |4|, you have to draw the lines around the 4 on the worksheet.

4 0

3 years ago