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3 years ago

Complete the ratio 6:30 = 1:? What goes where the question mark is?

Mathematics

2 answers:

Eva8 [605]3 years ago

8 0

The answer is 5 because 30/6=5

Archy [21]3 years ago

6 0

6 and 30 camd be simplified with 6
the result will be 1:5
so the question mark is 5

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Solve the following quadratic equation by completing the square: x² + 12x = 15

Lerok [7]

Answer:

x = -1.14 or -13.14

Explanations:

The given equation is:

$x^2+12x\text{ = 15}$

Find the half of 12, and add the square to both sides of the equation.

That is add 6² to both sides

$x^2+12x\text{ + 6}^{2}\text{ = 15 + 6}^{2}$ $\begin{gathered} (x+6)^2\text{ = 15 + 3}6 \\ (x+6)^2\text{ = 51} \\ \end{gathered}$

Find the square root of both sides:

$\begin{gathered} \sqrt[]{(x+6)^2_{}}=\pm\sqrt[]{51} \\ \text{x + 6 = }\pm\sqrt[]{51} \\ x\text{ = -6 }\pm\sqrt[]{51} \\ \text{x = }-6\pm7.14 \\ x\text{ = -6+7.14 = }1.14 \\ x\text{ = -6 - 7.14} \\ \text{x = -13.14} \end{gathered}$

x = -1.14 or -13.14

3 0

11 months ago

9. A carpenter bought 4 rolls of electric wire. He got 60.24 meters of

Citrus2011 [14]

Answer:

the answer is 64.24 meter

Step-by-step explanation:

pa brainless Naman po please

3 0

2 years ago

Find the 50th term of the sequence 5,-2,-9,-16 ,,,

Mademuasel [1]

Common difference is -2-5 = -7
first term is 5

a_50 = 5 -7(50-1) = -338

2) d = 3 - (-7) = 10
a = -7

a_110 = -7 + 10(110 - 1) = 1083

d = -27 - (-22) = -5

second -7 - 5= -12
third = -12 - 5 = -17

7 0

3 years ago

Which of the statements below is true for the following set of numbers?

Taya2010 [7]

Answer:

The range is 40 and the midrange is 20.

4 0

2 years ago

All help is much appreciated please and thank you

scoundrel [369]

Anddd Similar traingles for one more time.

Here,
RQ/RP = RS/RT = QS/PT = 1/2

Using the values of QS and PT will give,

$\frac{y}{y + 46} = \frac{1}{2} \\ \\ 2y =y + 46 \\ \\ y = 46$

Therefore y= 46 units.

6 0

3 years ago