2 years ago

Find the value of a, b, and c. 1. a - (-8) = 12 2. b+12 = 10 3. C-3 = 5

Mathematics

1 answer:

Alborosie2 years ago

5 0

A=6
B=-2
C= 8
———————————-

You might be interested in

What's 5 - the square root of x + 10 = the square root of 7 - x

Tcecarenko [31]

$\bf 5-\sqrt{x+10}=\sqrt{7-x}\impliedby \textit{squaring both sides}
\\\\\\
(5-\sqrt{x+10})^2=(\sqrt{7-x})^2
\\\\\\
(5^2)-10\sqrt{x+10}+(x+10)=7-x
\\\\\\
35-10\sqrt{x+10}+x=7-x\implies 28-10\sqrt{x+10}+2x=0
\\\\\\
2x+28=10\sqrt{x+10}\implies x+14=5\sqrt{x+10}\impliedby 
\begin{array}{llll}
squaring\ both\\
sides\ again
\end{array}
\\\\\\
$

$\bf (x^2)+28x+(14^2)=5^2(x+10)\implies x^2+28x+196=25x+250
\\\\\\
\begin{array}{lcclll}
x^2&+3x&-54&=0\\
&\uparrow &\uparrow \\
&-6+9&-6\cdot 9
\end{array} \implies (x+9)(x-6)=0\implies 
\begin{cases}
x+9=0\\
\boxed{x=-9}\\
-----\\
x-6=0\\
\boxed{x=6}
\end{cases}$

3 0

2 years ago

What is the simplest term for these fractions?

irinina [24]

3/4

1/3

3/4

1/3

7/12

5/6

9/10

2/3

2/5

1/4

Hope this helps.
Have a great day!

3 0

2 years ago

Brian bought 4 CDs that were each the same price. Including sales tax, he paid a total of $60.80 . Of that total, $3.60 was tax.

Yuliya22 [10]

Answer:

14.30

Step-by-step explanation:

$60.80 - $3.60 = 57.20/4 = 14.30

3 0

2 years ago

What is the solution of the following system of linear equations?<br> y = x - 7<br> 2y + x=1

andrew-mc [135]

Answer:

x=5

y=-2

Step-by-step explanation:

I just took this!

Hope I helped

5 0

2 years ago

Please answer this multiple choice question, will give brainliest!!

Kamila [148]

Answer:

C. 4.3 cm

Step-by-step explanation:

Since it is a right triangle you can use a²+b²=c² to solve this. Then you subtract 2 from the AC to get AD.

7 0

2 years ago

Read 2 more answers