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4 years ago

Select a pair of numbers that have a sum of 9 and a difference of 1

Mathematics

2 answers:

Tems11 [23]4 years ago

8 0

Answer:

The two numbers with the sum of 9 and difference of 1 is 5 and 4.

Step-by-step explanation:

Doss [256]4 years ago

5 0

Answer:

The answer is 4 and 5.

Step-by-step explanation:

4+5 = 9

5-4 = 1

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Tyler and Pearl went on a 20km bike ride that lasted for 3 hours. Because of steep hills or the trail, they walked for most of t

noname [10]

Answer: 1 hour

Step-by-step explanation:

Let the distance they walked be $d_1$ in time $t_1$ and the distance they walked be $d_2$ in time $t_2$ ,then

Walking speed= $\frac{d_1}{t_1}=4$

$\\\Rightarrow\ d_1=4t_1$

Riding speed= $\frac{d_2}{t_2}=12$

$\\\Rightarrow\ d_2=12t_1$

Also the total time taken=3 hours

∴ $t_1+t_2=3\\\Rightarrow\ t_2=3-t_1$ ...(1)

Since the total distance= 20 km

∴ $d_1+d_2=20\\\Rightarrow4t_1+12t_2=20\\\Rightarrow4t_1+12(3-t_1)=20..............[\text{from (1)}]\\\Rightarrow4t_1+36-12t_1=20\\\Rightarrow-8t_1=-8\\\Rightarrow\ t_1=1$

Thus, the they spent 1 hour time in walking.

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3 years ago

Spencer has a Doctorate degree and earns an annual salary of $96,000. He works 40 hours per week for 48 weeks per year. His brot

Stells [14]

Answer:

23 or 23.00

Step-by-step explanation:

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3 years ago

Simplify by combining like terms <br><br> 7/2x-8.62-3/2x-2.38

Dimas [21]

Like terms are terms whose variables are the same.
7/2 x and -3/2x have the same variable, so we can combine them to make 4/2x.
-2.38 and -8.62 are both integers, so we can combine them to make -11.
This gives us -11 + 4/2x.
This is your final answer.

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3 years ago

the football team needed 15 feet for a first down. how many yards did the team need for the first down.

Tatiana [17]

5 yards 15 divided by 3

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3 years ago

Find the equation of a line that passes through the points (1,-5) and (3,-6).

sdas [7]

Answer:

y = - $\frac{1}{2}$ x - $\frac{9}{2}$