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2 years ago

Help 6th grade math!

Mathematics

1 answer:

ddd [48]2 years ago

7 0

Answer:

The opposite of -4 1/2 is 4 1/2. Both are 4 1/2 units from zero.

Step-by-step explanation:

The opposite of -4 1/2 is 4 1/2. Both are 4 1/2 units from zero.

See attachment with a number line.

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Karen spent 7/10 hour reading and 3/5 hours writing in her journal how much longer did karen spend reading than writing in her j

STatiana [176]

Answer: 1/10

Step-by-step explanation:

From the question, we are informed that Karen spent 7/10 hour reading and 3/5 hours writing in her journal.

To calculate how much longer karen spent reading than writing in her journal, we have to subtract 3/5 from 7/10. This will be:

= 7/10 - 3/5

Note that the lowest common multiple of 5 and 10 is 10.

= 7/10 - 6/10

= 1/10

Therefore, the answer is 1/10

3 0

3 years ago

Math homework geometry please help

Ghella [55]

Answer:

Step-by-step explanation:

The theorem we use for this is

$a(a + b) = c(c + d)$

Solve for d.

$a(a + b) = c { }^{2} + cd$

$a(a + b) - {c}^{2}$

$\frac{a(a + b) - {c}^{2} }{c}$

A is the answer

3 0

3 years ago

For the following problem:

Gnoma [55]

(a) identify the unknown quantities and introduce variables to represent them

Answer:

Distance traveled by Amelia upstream is 12 km. Let us call it x.

So that x = 12 km

Distance traveled downstream is unknown. But by reading and understanding the question, one can tell that the distance covered on trip downstream must be the same as distance traveled while going upstream.

Let us call it y.

So that y = x = 12 km

y = 12 km

Speed of Amelia while swimming = s

Speed of the current in the river = c

(b) write equations which express the information given in the statement of the problem

Answer:

s - c = 2 ------eq-1

s + c = 6 ------eq-2

Step-by-step explanation:

Speed of Amelia's swimming is same then why is the time taken while going upstream different than while going downstream?

It is because the resistance of current in the river is in the downward direction. It explains why Amelia takes more time to go upstairs and much less to come back.

Using Speed = Distance traveled/Time

While going upstream:

Amelia is going against the current, hence the direction for Amelia and river's current is opposite. We get the equation:

s - c = 12/6 = 2------eq-1 where t = 6 hours

While going downstream:

Amelia is going with the current, hence the direction for Amelia and river's current is same. We get the equation:

s + c = 12/2 = 6------eq-2 where t = 2 hours

(c) solve the equations and give the answer

Answer:

speed of the current in the river = c = 4 km/h

Step-by-step explanation:

To find = c?

We will use the two equations:

s - c = 2 ------eq-1

s + c = 6 ------eq-2

From eq-1 :

$s-c= 2\\⇒ s = 2+c\\$

putting s = 2+c in eq-2:

$(2+c)+c = 6\\2+2c=6\\2c=8\\c=4$

Hence; the speed of the current of the river is 4 km/h.

5 0

3 years ago

What is a frequency table? Give details.

Elden [556K]

Answer:

A table divided into cells by category with counts for each category in each cell. For example, let's say you were counting the number of cars and trucks that drove down a road each day over a 5-day week. Your categories would be vehicle and day. You could summarise this as a frequency table:

Step-by-step explanation:

6 0

4 years ago

The school fu fair made $1768 on games and $978 on food sales. How much money did the fun fair make on games and food sales?

ololo11 [35]

$1768 + 978 = 2746$
because when you add 1768 and 978 it would equal $2746 so the total between the both is 2746 so your answer is 2746

8 0

3 years ago