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Lyrx [107]
3 years ago
5

Evaluate the expression x=-4.9 and y=-1.3 -5x+7y

Mathematics
1 answer:
Flura [38]3 years ago
8 0

Answer:

15.4

Step-by-step explanation:

-5×(-4.9) +7×(-1.3)

=24.5+(-9.1)

=24.5-9.1

==15.4

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Find the missing side x:
damaskus [11]

Answer:

Probably 5

Step-by-step explanation:

This is an extremely confusing question.  Whoever wrote it most likely had a typo.

The little box in the corner of the triangle means that is 90 degrees. if that is the case, this is a simple question:

Apply pythagorean theorem (a^2 + b^2 = c^2)

In this case:

3^2 + 4^2 = x^2

x^2 = 25

x=5.

HOWEVER: the two given angles are 60 degrees and 50 degrees.

Which does not work. It creates an impossible triangle.

7 0
3 years ago
1=-10
Archy [21]
I think you have to divide by 10
6 0
3 years ago
One number is 3 more than 2 times the other, and their sum is 27. Find the numbers.
TEA [102]

Answer:

Option 2 is correct

Step-by-step explanation:

One number is 2 times another number plus 3. Their sum is 21.

"One number is 2 times another number plus 3" translated to

x = smaller number = another number

It is also given that: Their sum is 21.

Combine like terms:

3x+3 = 21

4 0
4 years ago
Read 2 more answers
Expand and simplify 4(p+2)-3(5-6p)
MissTica

Answer:

22p-7

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Please help
Crazy boy [7]

Answer:

157 / 110

Step-by-step explanation:

1.42727........

1000x = 1427.2727.......

10x = 14.2727....... ( - )

___________________

990x = 1413

___________________

x = 1413 / 990

x = 157 / 110

Therefore,

1.42727........ in fraction is 157 / 110.

8 0
3 years ago
Read 2 more answers
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