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Pepsi [2]
3 years ago
9

Solve the equation. 7b -0.5 = 8b​

Mathematics
1 answer:
Lera25 [3.4K]3 years ago
3 0

Answer:

b = -0.5

Step-by-step explanation:

7b -0.5 = 8b

7b - 0.5 + 0.5 = 8b +0.5

7b -8b = 8b + 0.5 -8b

-x = 0.5

x = -0.5

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Simplify the following
postnew [5]

Answer:

<h2>see the answers ⤵️</h2>

Step-by-step explanation:

<h3>to understand the solving steps</h3><h3>you need to know about</h3>
  • \sqrt{ \frac{x}{y} }  <  =  >  \frac{ \sqrt{x} }{ \sqrt{y} }  \\ and \:  \\  \sqrt{x}  \times  \sqrt{y}  =  \sqrt{xy}
  • PEMDAS

let's solve:

a) \sqrt{ \frac{9}{25} }

\frac{ \sqrt{9} }{ \sqrt{25} }

\frac{3}{5}

b) \frac{ \sqrt{12} }{ \sqrt{3} }

\frac{ \sqrt{12} }{ \sqrt{3} }  \times  \frac{ \sqrt{3} }{ \sqrt{3} }

\frac{ \sqrt{12 \times 3} }{ (\sqrt{3} )^{2} }

\frac{ \sqrt{36} }{3}

\frac{6}{3}

2

c) \frac{ \sqrt{15} }{ \sqrt{3} }

\sqrt{5}

6 0
3 years ago
The answer of this please? thank you for very much i really appreciate!
Zolol [24]

Answer:

77 degrees

Step-by-step explanation:

The interior angles of a triangle always add up to 180 degrees, so you can form an equation:

x + 71 + 32 = 180

x + 103 = 180\\x = 77

5 0
3 years ago
Judith’s parents invest money into a bank account to save up for college. The formula () = ,(.) can be used to find out how much
Semenov [28]

Answer:

c. How much money would be in the account after 18 years?

6 0
2 years ago
The ordered pair below represents a point on the line 3y + 4x = 5. Enter the missing y-coordinate for this point in the box. In
11Alexandr11 [23.1K]

Answer:

y = 2

Step-by-step explanation:

3y + 4 * (-1/4) =5

3y -1 = 5

3y = 6

y = 2

3 0
3 years ago
Cos(−θ)=−√2/5 , sinθ&gt;0 What is the value of sinθ ?
mel-nik [20]

Answer:

sin theta = +(√23)/5

Step-by-step explanation:

Did you know that the cosine is an even function, so that cos (-theta) = cos (+theta)?

Thus we have:

cos(θ)= −√2/5 , sinθ>0

If the cosine of theta is negative, that means that the terminal side of theta is in either Quadrant II or III.  Since the sine of theta is positive, we can deduce that theta is in Quadrant II.

Given cos(θ)= −√2/5, we square both sides, obtaining (cos theta)^2 = 2/25.  Using the formula (sin theta)^2 + (cos theta)^2 = 1, we arrive at:

(sin theta)^2 = 1 - 2/25, or 23/25.

Then sin theta = +(√23)/5.

6 0
4 years ago
Read 2 more answers
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