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2 years ago

C = 27r; Solve for r.

Mathematics

1 answer:

Rudik [331]2 years ago

8 0

Answer:

r = C/27

Step-by-step explanation:

C = 27r

Switch sides.

27r = C

Divide both sides by 27.

r = C/27

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An amount of $700 is invested partly at 8% and partly at 10%. The yearly income from both investments is $64. The amount investe

ioda

A8% is X
10% is 700-X

X(.08)+ .10(700-X)= 64
.08x+ 70-.10X=64
-.02X+70=64
-70=-70
-.02x= -6
Divide by -.02
X= 300

Answer $300 was invested at 8%

Check 300 times .08= 24. 700-300=400 times .10 = 40 and 24+40=64

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3 years ago

The battery on Sarah's old computer can last for 3 3/4hours. She bought a new

RideAnS [48]

Answer:

$3 \frac{3}{4} \times 20%$

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3 years ago

Which graph shows the solution set of the compound inequality 1.5 x minus 1 greater-than 6.5 or 7 x + 3 less-than negative 25?

saul85 [17]

Answer:

After solving the compound inequality $1.5x-1>6.5 \ or \ 7x+3$ we get $\mathbf{x>5 \ or \ x$

Option B is correct.

Step-by-step explanation:

We are given compound inequality: $1.5x-1>6.5 \ or \ 7x+3$

We will first solve the inequalities to find the value of x, then will draw the graph.

$1.5x-1>6.5 \ or \ 7x+36.5+1 \ or \ 7x+3-37.5 \ or \ 7x\frac{7.5}{1.5} \ or \ x5 \ or \ x< -4$

So, after solving the compound inequality $1.5x-1>6.5 \ or \ 7x+3$ we get $\mathbf{x>5 \ or \ x$

Now, the number line will be as shown in figure.

The description as given in options is:

A number line goes from negative 10 to positive 10. An open circle appears at negative 4 and positive 5. The number line is shaded from negative 4 toward negative 10. The number line is also shaded from positive 5 toward positive 10.

so, Option B is correct.

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3 years ago

Read 2 more answers

Confirm that f and g are inverses by showing that f(g(x)) = x and g(f(x)) = x.

Reil [10]

F(x) = 8/x and g(x) = 8/x

To find f(g(x)), all you do is substitute g(x) into the x value of f(x).

So f(g(x)) = 8/(8/x) which = x

Similarly g(f(x)) is found by substituting f(x) into the x value of g(x)

g(f(x)) = 8/(8/x) which = x

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4 years ago

Which statement regarding the interior and exterior angles of a triangle is always true?

sertanlavr [38]

Answer:

An exterior angle is supplementary to the adjacent interior angle.

Step-by-step explanation:

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3 years ago