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2 years ago

Match each whole number with a rational, exponential expression.

Mathematics

1 answer:

Katyanochek1 [597]2 years ago

4 0

$1.\\9=3^2\\2.\\196=14^2\\3.\\256=16^2=4^4=2^8\\4.\\225=15^2\\5.\\16=4^2=2^4\\6.\\25=5^2$

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X+4y=6 3x+3y=9 Answer is 6.3 but how

maksim [4K]

Answer:

X = 2

Y = 1

Step-by-step explanation:

x + 4y = 6

3x + 3y = 9

3x + 12y = 18

3x + 3y = 9

9y = 9

x + 4y = 6

y = 1

x + 4 * 1 = 6

y = 1

x + 4 = 6

y = 1

x = 2

so there ia only 1 solution for this equation is (2;1)

Done :))

8 0

2 years ago

The difference of x and 5 is less than 21. Translate the sentence into an inequality.

Ad libitum [116K]

Answer:

x-5<21

Step-by-step explanation:

3 0

3 years ago

Wendy can wash a car twice as fast as Jason. When they work together, Wendy and Jason can wash a large van in 2 hours. How many

Ugo [173]

X= number of hours would it take Jason to wash the van by himself.
2x=number of hours would it take Wendy to wash the van by herserlf.

we calcaulate the fraction of work by Jason during one hour 

x hours-----------------------------1 work
1 hour---------------------- fraction of work during one hour.

fraction of work during one hour=(1 hour * 1work) / x hours=1/x

we calculate the fraction of work by Wendy during one hour.
2x hours-----------------------------1 work
1 hour---------------------- fraction of work during one hour.

fraction of work during one hour=(1 hour * 1work) / 2x hours=1/2x

We can suggest this equation:
2 hours(fraction of work by Jason during one hour + fraction of work by Wendy during one hour)=1 work

2(1/x + 1/2x)=1

least common multiple=2x
2(2+1)=2x
2(3)=2x
6=2x
x=6/2
x=3

answer: 3 hours would ti take Jason to wash the van by himself.

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3 years ago

A group of adults plus one child attend a movie at a movie theater. Tickets cost $9 for adults and $3 for children. The total co

dmitriy555 [2]

Answer:

There are 6 adults. My mistake! I had the wrong equation. 3 + 9a = 57.

Step-by-step explanation:

There is only 1 child in the group.
Cost for children is 3$.
The cost for adults is 9$.
9 * 6 = 54
3 * 1 = 3
3 + 9a = 57
Simplify:
6 Adults.

8 0

2 years ago

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The ratio of boys to girls in Mr. Baker's social studies class is 2 to 3. If there are 30 total students in the class, how many

astraxan [27]

Answer:

Step-by-step explanation:

1st of all we should let the ration of boys to girls be 2x and 3x.

After that we should make the sum between 2x and3×and the sum of 2numbers is equal to 30

i.e.2x+3x=30

Then ,by solving this eqation we get the value of x=6

After that put the value of x in the number of boys

i.e.

2x=2×6=12

Hence ,the number of boys is 12

7 0

3 years ago

Read 2 more answers