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SOVA2 [1]
2 years ago
7

If rx - st = r , which expression represents x

Mathematics
1 answer:
expeople1 [14]2 years ago
5 0
Your goal is to have x by itself
Send st to other side
rx= r+st

Divide by r so x stays alone

X=(r+st)/r

Which is also equal to

X=r/r+st/r
X= 1+st/r
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Eighteen subtracted from half a number is 38.<br> Find the number.
Andrews [41]

Answer:

x=112

Step-by-step explanation:

x/2-18=38

first add +18

x/2=56

now multiply by 2

x=112


6 0
3 years ago
Two angles of a triangle are 30°and 80°. Find the third angle.
stiv31 [10]

Answer:

The third angle of the triangle is 70°.

Step-by-step explanation:

The two angles of a triangle (say Δ ABC) are given to be 30° and 80°.

We have to find the third angle.

Let us assume that ∠ A = 30° and ∠ B = 80°, then we have to find ∠ C.

Now, we know that, ∠ A + ∠ B + ∠ C = 180° {Property of a triangle}

⇒ 30° + 80° + ∠ C = 180°

⇒ ∠ C = 180° - 30° - 80° = 70°

Therefore, the third angle of the triangle is 70°. (Answer)

7 0
3 years ago
7x^2+66xy+80y^2 Please help me out i need this answer
lilavasa [31]
<span>There are no like terms.

If that's what your question is...

Not sure but hope I helped a bit.</span>
4 0
3 years ago
Of 150 goldfish in the fish pound, 27 are red. What percentage of goldfish are red?
katovenus [111]

To get the percent, divide 27 by 150 then multiply the quotient by 100.

(27 / 150) * 100 = 18%

4 0
3 years ago
Caroline babysat for two families - the Nelsons and the Smiths. Use the info below to compare her earnings.
Ket [755]

Answer:

She earns $6.50 from the Smiths which is 25 cents more than she earns at the Nelsons.

Step-by-step explanation:

To solve this problem you must find the hourly rate she earns at the Smiths.  This will allow you to compare to the hourly rate that is given for the Nelsons.  To find the Smiths hourly rate divide $39 by the 6 hours she babysat there.  This will have the hourly rate.  39/6=6.5.  This means she earns $6.50 an hour for the Smiths.  When comparing the rates it is clear that she earned 25 cents more at the Smiths.

5 0
3 years ago
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