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melisa1 [442]
3 years ago
15

help me the area of a rectangular roof of a doghouse is 756 square inches. the length of the roof is 108 inches. how many inches

wide is the roof? show the math
Mathematics
2 answers:
castortr0y [4]3 years ago
8 0
<u />Area of Doghouse: 756 sq. inches
Length: 108 in.
So you have to multiply the length times the width to get the area: 108 x Width = 756
Answer: 7 inches
Andrei [34K]3 years ago
5 0
A=L*w \\ A=756 \ square \ inches \\L=108 \ inches  \\ \\ 108*w=756 =>w=756:108 \\ \\ w=7 \ inches
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What is 3 and 5? And show how to solve plz
nataly862011 [7]

Answer:

3. 9n + 6 = 78

5. see below

Step-by-step explanation:

3.

Let the number of adults be n. Each adult ticket costs $9, so the cost of n adult tickets is 9n. There is only one child, and a child's ticket is $6, so the cost of the child's ticket is 6. Adding the costs, you get 9n + 6. The total cost is $78, but the expression representing the total cost is 9n + 6, so 9n + 6 must equal 78. That is the equation.

9n + 6 = 78

5.

Sam bought equal gifts for his two children. The two gifts had the same price, x. He received a discount of $125. How much did each of the two gifts cost before the discount?

5 0
3 years ago
Rhian sat a math test and an english test.In the maths test she scored 14 out of 17.In the english test she scored 31 out of 39.
Dvinal [7]

Answer:

The maths test

Step-by-step explanation:

If you convert both of the results to percentage,

Maths:

\frac{14}{17}   \times 100 = 82\%

English:

\frac{31}{39}  \times 100 = 79\%

You'll see that she scored better in the maths test.

4 0
3 years ago
Solve for x<br><img src="https://tex.z-dn.net/?f=0%20%3D%20%20-%20%7B%20e%20%7D%5E%7B%20-%20x%7D%20%20%2B%203%20%7Be%7D%5E%7B3x%
Brilliant_brown [7]

\bf \textit{Logarithm Cancellation Rules} \\\\ \stackrel{\stackrel{\textit{we'll use this one}}{\downarrow }}{log_a a^x = x}\qquad \qquad a^{log_a x}=x~\hfill\stackrel{recall}{ln=log_e}\qquad log_e(e^z)=z \\\\[-0.35em] \rule{34em}{0.25pt}


\bf 0=-e^{-x}+3e^{3x}\implies e^{-x}=3e^{3x}\implies \cfrac{1}{e^x}=3e^{3x}\implies 1=e^x\cdot 3e^{3x} \\\\\\ 1=3e^xe^{3x}\implies \cfrac{1}{3}=e^{x+3x}\implies \cfrac{1}{3}=e^{4x}\implies ln\left( \cfrac{1}{3} \right)=ln\left( e^{4x} \right) \\\\\\ ln\left( \cfrac{1}{3} \right)=4x\implies \cfrac{ln\left( \frac{1}{3} \right)}{4}=x


and you plug that in your calculator to get about -0.27465307216702742285.

8 0
3 years ago
4m-m-1/2=3m+1/3 what is the value of m
sammy [17]

Answer:

Correct option is

A

1,−1/2

For equal roots D=b

2

−4ac=0

⇒[2(m+1)]

2

−4m(3m+1)=0

⇒m

2

+2m+1−3m

2

−m=0

⇒−2m

2

+m+1=0

⇒2m

2

−m−1=0⇒(m−1)(m+

2

1

)=0

⇒m=1,

2

−1

7 0
3 years ago
Find the height of the tower using the information given in the illustration. A right triangle has a a vertical side as the heig
ollegr [7]

Answer:

1725.1 feet

Step-by-step explanation:

It is given that there is a right angled triangle having a base of length of 130 feet. The angle between the hypotenuse and the base is given as 85.691 degrees.

Therefore, to find the height, we know :

$\tan \theta = \frac{\text{height}}{\text{base}}$

$\tan 85.691 = \frac{\text{h}}{\text{130}}$

$13.27 = \frac{\text{h}}{\text{130}}$

h = 13.27 x 130

  = 1725.1 feet

Therefore, the height of the Eiffel tower =  1725.1 feet

4 0
3 years ago
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