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4 years ago

Help me on this question quickly

Mathematics

1 answer:

olchik [2.2K]4 years ago

4 0

Answer:

1) More

2) sorry i don't understand this one

3) 15

4) 3

5) 15

6) 6

Step-by-step explanation:

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Which of the following is NOT a recommended way of writing ratios?

Amanda [17]

Answer:

Do not write ratios like so

2-1

Step-by-step explanation:

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3 years ago

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For which acute angles is the following statement true? The complement of the angle is smaller in measure than either of the two

Hitman42 [59]

Let the acute angle be 2x.

Its complement is 90 - 2x.

It is given that this complementary angle is less than each of the bisected angle.

Therefore, 90 - 2x < x

90 < 3x

or, x > 30.

2x > 60

Therefore, the statement is true for all angles that are greater than 60 degrees.

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4 years ago

Solve the equation by completing the square.Round to the nearest hundredth if necessary. X^2–x–7=0

lesya [120]

NOTE: $\left(x-\dfrac{1}{2}\right)^2=x^2-x+\dfrac{1}{4}$

$x^2-x-7=0 \\ \\ \underbrace{x^2-x+\frac{1}{4}}_{\left(x-\frac{1}{2}\right)^2}-7\dfrac{1}{4}=0 \\ \\ \\ \left(x-\frac{1}{2}\right)^2=7\frac{1}{4}=\frac{29}{4} \qquad /\sqrt{}\\ \\ \left|x-\frac{1}{2}\right|=\dfrac{\sqrt{29}}{2} \\ \\ x_1=\dfrac{1}{2}-\dfrac{\sqrt{29}}{2} \approx -2.19 \\ \\ x_2=\dfrac{1}{2}+\dfrac{\sqrt{29}}{2} \approx 3.19$

ANSWER: c)

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3 years ago

Solve the equation 4x + 29 = 5 - 8(x+6)

Luda [366]

To solve an equation for x we will try to isolate x. Hence, first step is to use the distributive property. Therefore,

4x + 29 = 5 - 8(x+6)

4x + 29 = 5 - 8x - 48

4x + 29 = - 43 -8x Combine the like terms.

4x + 29 + 8x = -43 Add 8x to each sides of the equation.

12x + 29 = -43

12x = -43 - 29 Subtract 29 from each sides.

12x = -72

$\frac{12x}{12} =-\frac{72}{12}$

So, x =- 6

4 0

3 years ago

You start driving north for 27 miles, turn right, and drive east for

WITCHER [35]

Answer:

Using the Pythagorean theorem

a^2 + b^2 = c^2

c = square root(a^2 + b^2)

c = square root(27^2 + 36^2)

c = square root(729 + 1296)

c = square root(2025)

c= 45

<u>Straight Line Distance = 45 miles</u>

6 0

3 years ago