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12345 [234]
2 years ago
7

Simplify and answer step by step​

Mathematics
1 answer:
bazaltina [42]2 years ago
8 0

See attachment for math work. I did number 3 only.

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Please help!.......
larisa86 [58]
(f+g) means add the expressions together. combine like terms.
5 {x}^{2}  + 3 {x}^{2}  = 8 {x}^{2}
- 2x + x =  - x
there is no other constant term so the -4 stays as is.
4 0
3 years ago
Light travels at 186,000 miles per second. Light takes about 11⁄3 seconds to travel from the earth to the moon. Calculate the di
san4es73 [151]

Answer:

682,000 miles

Step-by-step explanation:

Using the ratio of 186,000 miles per second:

\frac{miles}{second}=\frac{186,000}{1}

we can set up a proportion (equivalent ratios) to find the distance, in miles, from the earth to the moon

\frac{186,000}{1}=\frac{x}{\frac{11}{3}} where 'x' is the number of miles between the earth and the moon

Cross-multiply:  x = 186,000*\frac{11}{3}

Solve for x = 682,000 miles

7 0
3 years ago
The hike to the campsite is 4 km long if we take turns carrying the tents for 4/5 of a kilometer meter how many times will the t
andrey2020 [161]
Total Distance = 4km

Each person takes 4/5km

Calculate the number of times the tent has to change hands:

4 \div  \dfrac{4}{5} =  \dfrac{4}{1} \times  \dfrac{5}{4} = \dfrac{5}{1} = 5

\boxed {\boxed { \text {Answer: The tent will have to change hands 5 times.} } \\  \\ }
6 0
3 years ago
Read 2 more answers
The top of a ladder rests at a height of 15 feet against the side of a house.If the base of the ladder is 6 feet from the house,
Lemur [1.5K]
21 feet because yea yessir
8 0
3 years ago
11. Reason Identify each solution as rational or
melamori03 [73]

Answer:

a. Rational; b. rational

Step-by-step explanation:

A rational number is the quotient of two integers.

a. ⁴/₇ + ⁻¹/₃

\begin{array}{rcl}\dfrac{4}{7} + \dfrac{-1}{3} & = & \dfrac{12}{21} + \dfrac{-7}{21} \\\\& = & \dfrac{5}{21}\\\end{array}

The solution is rational.

b. √4 ⅖

\begin{array}{rcl}\sqrt{4} \, \dfrac{2}{5} & = & 2 \, \dfrac{2}{5}\\\\& = & \dfrac{22}{5}\\\end{array}

The solution is rational.

7 0
3 years ago
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