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Nonamiya [84]
3 years ago
15

Please help meeee!!!thanks

Mathematics
2 answers:
natita [175]3 years ago
5 0

Answer:

It's 7.

Step-by-step explanation:

Replace the p by 1/2 and the q by 7 and simplify:

8p + 3q - 18

= 8(1/2) + 3(7) - 18

= 4 + 21 - 18

= 25 - 18

= 7 (answer).

Andrew [12]3 years ago
4 0

Answer:

Hi there!

The answer to this question is: 7

Step-by-step explanation:

You simply plug in the values given and solve

8(1/2) + 3(7) -18

4+21-18=7

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For each expression, write an equivalent expression that only uses addition a. 20 - 9 + 8 -7 b. 4x - 7y - 5z + 6 c. -3x - 8y - 4
Genrish500 [490]

Answer:

a. =11+ 1

b. =4x+ (-7y) + (-5z) +6

c. (-3x) + (-8y) +(-4)+(-8/7z)

Step-by-step explanation:

a. 20 - 9 + 8 -7

=11+ 1  ( this is obtained by solving)

b. 4x - 7y - 5z + 6

=4x+ (-7y) + (-5z) +6

We multiply the negative sign with the positive sign to get a minus so the answer remains the same and the expression is written as an addition sum.

c. -3x - 8y - 4 - 8/7z

-[ 3x+8y+4+8/7z]

or

(-3x) + (-8y) +(-4) +(-8/7z)

The minus sign is taken as common leaving the expression with the plus only.

It can be written in the same manner as above, adding the negative terms so that the expression is written as a sum.

3 0
2 years ago
6.48> 6.4_1> 6.470 whats the unknown digit to make the statement true
Triss [41]
The unknown digit is 7 because 6.471 is greater than 6.470 and less than 6.48.
8 0
3 years ago
There are 54 bookshelves in the library
masya89 [10]

Answer:

60

Step-by-step explanation:

Assuming that all 54 shelves hold the same number of books its just a matter of dividing them (or sharing them equally) on each shelf.

3240 / 54 = 60

Each shelf holds 60 books.

5 0
3 years ago
Add -13/4+2/5 using the number line. select the location on the number line to plot the sum
Ivahew [28]
The answer is if you convert. we cant see the number line so, we cant tell you the second part of the problem.. attach the image please.

ok so convert.. -13/4 becomes -65/20 and 2/5 becomes 8/20, so add that and get -57/20, then simplify how you want to. thats your answer
4 0
4 years ago
Solve the equation.<br><br> –3x + 1 + 10x = x + 4
SIZIF [17.4K]

First, simplify. Combine like terms

10x - 3x = 7x

7x + 1 = x + 4

Isolate the x. Subtract x from both sides, and 1 from both sides

7x (-x) + 1 (-1) = x (-x) + 4 (-1)

7x - x = 4 - 1

Simplify

6x = 3

Isolate the x. Divide 6 from both sides

6x/6 = 3/6

x = 1/2

1/2, or 0.5 is your answer for x.

hope this helps

4 0
3 years ago
Read 2 more answers
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