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AlladinOne [14]
3 years ago
10

A meteorologist used the expression below to describe how the temperature changed. –5 + (–4) Which statement could describe how

the temperature changed? The temperature was –5 degrees, then it increased 4 degrees. The temperature was –5 degrees, then it decreased 4 degrees. The temperature was 5 degrees, then it increased 4 degrees. The temperature was 5 degrees, then it decreased 4 degrees.
Mathematics
2 answers:
saw5 [17]3 years ago
6 0
The answer is
The temperature was -5°, then it decreased 4°
Mkey [24]3 years ago
4 0

Answer:

The temperature was –5 degrees, then it decreased 4 degrees.

Step-by-step explanation:

Expression : -5+(-4)

A meteorologist used this expression to describe how the temperature changed.

Since temperature was -5.

Now,temperature is :

-5+(-4)

-9

So, initially temperature was - 5 and now the temperature is -9 .

So,it decreased 4 degrees.

Thus we can conclude that The temperature was –5 degrees, then it decreased 4 degrees.

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igor_vitrenko [27]
Another number will be negative.
3 0
3 years ago
Lines x and y are parallel and are cut by the transversal b. If the measure of angle 1 is 57°, what is the measure of angle 6? E
lana [24]

Answer:

\angle6=123

Step-by-step explanation:

Given

Lines x and y

Transversal b

\angle 1 = 57

Required

Find \angle 6

From the attachment, \angle1 and \angle7 are vertically opposite.

This means that

\angle 1 =\angle 7 = 57

Similarly

\angle 7  and \angle 6 are supplementary angles

So:

\angle7 + \angle6=180

Make \angle6 the subject

\angle6=180-\angle7

\angle6=180-57

\angle6=123

The relationship between \angle1 and \angle6 is that they are supplementary angles because:

\angle6+ \angle1=180

4 0
3 years ago
A trader sold a radio set for 72.00 making a profit of 8% .Find , correct to the nearest ghana cedis ,the cost price for the rad
VMariaS [17]

Given:

The selling price of a ratio set = 72.00

Profit percent = 8%

To find:

The cost price for the radio set.

Solution:

Let x be the cost price for the radio set.

Radio set is sold at 8% profit.

\text{Selling price}=x+\dfrac{8}{100}x

\text{Selling price}=x+0.08x

\text{Selling price}=1.08x

The selling price of a ratio set is 72.00.

72=1.08x

\dfrac{72}{1.08}=x

x=66.666...

x\approx 67

Therefore, the cost price for the radio set is 67.

7 0
3 years ago
Solve 3(2x-4)>2(x+4)
DerKrebs [107]

Answer:

x > 5

Step-by-step explanation:

3 ( 2x - 4 ) > 2 ( x + 4 )

6x - 12 > 2x + 8

4x > 20

x > 5

6 0
3 years ago
In 2007, there were 31 laptops
abruzzese [7]

Answer:

l=31+20(y-2007)

where l is the number of laptops, and y is the year.

in 2017: l=231

Step-by-step explanation:

I will define the variable x as the number of years that passed since 2007.

Since the school buys 20 lapts each year, after a number x of years, the school will have

20*x more laptops.

and thus, since the school starts with 31 laptops, the equation to model this situation is

l=31+20*x

where l is the number of laptops.

since x is the number of years that have passed since 2007, it can be represented like this:

x=y-2007

where y can be any year, so the equation to model the situation using the year:

l=31+20(y-2007)

and this way we can find the number of laptos at the end of 2017:

y=2017

and

l=31+20(y-2007)

l=31+20(2017-2007)\\l=31+20(10)\\l=31+200\\l=231

3 0
3 years ago
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