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vekshin1
2 years ago
5

Suppose that a and b are rational numbers. which expression is equivalent to a - b?

Mathematics
1 answer:
mezya [45]2 years ago
6 0

Answer: Its a

Step-by-step explanation:

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#1) Mrs. Ebanks planted two trees on a
uranmaximum [27]

Answer:

D = 12.94 m

Step-by-step explanation:

Coordinates of first tree = A(0,8)

Coordinates of second tree = A(12,4)

We need to find the distance between the two trees. We can find it using distance formula for coordinates as follows :

D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

We have, x₁ = 0, x₂ = 12, y₁ = 8, y₂ = 4

Now using distance formula,

D=\sqrt{(12-0)^2+(4-8)^2}\\\\=\sqrt{144+16} \\\\=12.64\ m

So, the distance between the two trees is 12.64 m.

8 0
2 years ago
Expand and simply x(2x + 3) + 5( x - 7)​
zalisa [80]

Answer:

2x² + 8x - 35

Step-by-step explanation:

x(2x + 3) + 5(x - 7) ← distribute both parenthesis

= 2x² + 3x + 5x - 35 ← collect like terms

= 2x² + 8x - 35

6 0
2 years ago
-
ollegr [7]

Answer:

x = 2

y = -3

z = 4

( 2 , -3, 4 )

Step-by-step explanation:

x + y + z = 3 ---- i

x – y =5 ---- ii

y - z = -7 ---- iii

ii + iii

x - z = -2 ---- iv

i + ii

2x + z = 8 --- v

iv + v

3x = 6

x = 2

x=2 substitute for v

z = 4

x =2 substitute for ii

y = -3

5 0
3 years ago
Simplify this problem!!!
Nonamiya [84]

Answer:

C

Step-by-step explanation:

HOPE THAT HELPSBDNQBDB

4 0
1 year ago
Read 2 more answers
Rewrite without parenthesis and simplify (y+6)^2
GarryVolchara [31]
Y^2+36, because you square y and 6
4 0
3 years ago
Read 2 more answers
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