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natita [175]
3 years ago
8

I am really confused on questions 1-5 can you please help?????

Mathematics
1 answer:
Norma-Jean [14]3 years ago
5 0
I can answer 1 it would be 2.5x+5y=20
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Chen spent 7 hours at school on Friday he spent 30 minutes at lunch 50 minutes at a school assembly and the rest in class how mu
Helga [31]

Answer:

5 hours and 40 minutes would be class

Step-by-step explanation:

We know that the total time is 7 hours, which in minutes would be:

7 * 60 = 420

420 minutes would be class, now, we subtract the other times that are not to be in class and it would be:

420 - 30 - 50 = 340

So we could say that in class it takes 340 minutes, and if we spend hours it would be:

340/60 = 5.67 hours or also 5 hours and 40 minutes would be class.

4 0
3 years ago
Find f(-3) PLEASE HELP
Artemon [7]

Answer:

2

Step-by-step explanation:

When the point on the x-axis is on -3, the point on the y-axis is 2. Therefore, f(-3) is equal to 2.

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6 0
3 years ago
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HELP ME PLEASE I REALLY COULD USE IT BRAINLY GOES TO THE CORRECT ANSWER
Zanzabum

Answer:

y=x+8

Step-by-step explanation:

In order to get the output (y), you have to add 8 to the input (x).

18 + 8 = 26

35 + 8 = 43

86 + 8 = 94

therefore, x+8=y

8 0
3 years ago
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Find the measure of the indicated angle to the nearest degree.
fredd [130]

Step-by-step explanation:

Let the measure of required angle be x degree

\therefore \tan \: x =  \frac{33}{56}  \\  \\ \therefore \tan \: x =  0.589285714  \\  \\ \therefore  \: x =   {\tan}^{ - 1} (0.589285714)  \\  \\  \therefore  \: x =   {\tan}^{ - 1} ( \tan \: 30.510237394 \degree) \\  \\    \huge \red{ \boxed{\therefore  \: x =   31\degree}}

Thus, first option is the correct answer.

3 0
3 years ago
The scale of a map is 1 : 25 000
Artyom0805 [142]

Answer: 5.5km

Step-by-step explanation:

The scale given 1 : 25 000 , and it was said that on the map , the distance between two railway stations is 22 cm , this means that the scale of the map is 1: 25000 cm.

The scale 1 : 25 000 means that each centimeters on the map represent 25 ,000 in real life ,therefore , to calculate the real distance between the two railway station , we have

25,000 X 22

= 550000 cm

To convert this to km

Recall that

1 km = 100,000 cm

Therefore we will divide the answer by 100,000 , that is

550000/100000

= 5.5 km

Therefore , the real distance between the two railway stations is 5.5km

7 0
3 years ago
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