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Vadim26 [7]
3 years ago
10

7 - 5/2 (8r - 6) + 2r =32

Mathematics
1 answer:
Sergeu [11.5K]3 years ago
6 0

Answer:

r=-5/9

Step-by-step explanation:

Factor out the 2 from the expression

Reduce the numbers with the greatest common factor 2

Distribute the 5

Add Like terms

And then divide to get r

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8x + 12<br> Can someone please factorise this
ivanzaharov [21]

Answer:

4(2x + 3)

Step-by-step explanation:

Given

8x + 12 ← factor out the common factor of 4 from both terms

= 4(2x + 3)

3 0
3 years ago
A car purchased for $17,500. After each year the resale value decreases by 20%. What will the resale value be after 4 years? Rou
Tema [17]
The value at the end of the year is 100% - 20% = 0.80 of the value at the beginning of the year. After 4 years of multiplying by this factor, the value is
  $17,500·0.80⁴ = $7,168
3 0
4 years ago
Can you work out G and H for me please. preferably telling me how you did it aswell
Veronika [31]
Abd is a right angled triangle so by pythagoras we know
{g}^{2}  =  {11}^{2}  +  {13}^{2}  \\  {g}^{2}  = 290 \\ g =  \sqrt{290}  \: or \: g = 17.03cm
and to calculate h we need to use the sine rule
\frac{h}{ \sin(22) }  =  \frac{g}{ \sin(32) }  \\  \frac{h}{ \sin(22) }  =  \frac{17.03}{ \sin(32) }  \\ h =  \frac{17.03}{ \sin(32) } \times  \sin(22)   \\ h = 12.04cm
i hope this helps
8 0
3 years ago
Complete the square <br> x^2+4-12=0
Tatiana [17]

Answer:

x = -6

x = 2

Step-by-step explanation:

x² + 4 - 12 = 0

= (x + 6)(x - 2)

x + 6 = 0

x = -6

x - 2 = 0

x = 2

5 0
3 years ago
What’s 50/4 as a decimal?
bearhunter [10]

Answer:

<em>Hello, </em><u><em>Your answer will be  "12.5"</em></u>

Step-by-step explanation:

To write 50/4 as a decimal you have to divide numerator by the denominator of the fraction.

We divide now 50 by 4 what we write down as 50/4 and we get 12.5<em> Hope That Helps!</em>

5 0
3 years ago
Read 2 more answers
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