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4 years ago

15% of what number is 4.5?

Mathematics

2 answers:

notsponge [240]4 years ago

8 0

4.5/0.15=30
......................................

Kaylis [27]4 years ago

3 0

4.5=.15x
/both sides by .15
30=x

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Help? which one should I choose

Delvig [45]

Answer:

true

Step-by-step explanation:

For 3 sides to be able to form a triangle, we need to check that the 2 shorter sides can "touch" when "stemming" out of the long side.

The long side has length 7cm, so the sum of 2 shorter sides must be bigger than 7cm for them to "touch". Note: if the sum was 7cm, the only way they would touch is if they were laid along the long side, so it would not be a triangle - it would be a segment.

Fortunately, 3cm + 5cm > 7cm, so we can form a triangle.

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3 years ago

URGENT PLEASE ANSWER To find the distance across a river, a surveyor chooses points A and B on one side of the river. She then c

Rus_ich [418]

Answer:

The distance between A and C = 127.4

Step-by-step explanation:

* We have 3 different points A , B , C lets consider them as

a vertices of a triangle ABC

- AB = 100

- m∠A = 47°

- m∠B = 82°

* To find the distance AC we can use the sin Rule

- In any triangle the ratio between the length of each side

to the measure of each opposite angle are equal

- In Δ ABC ⇒ AB/sinC = BC/sinA = AC/sinB

* Lets do it to find the distance between A and C

∵ m∠A = 47° and m∠B = 82°

∵ The sum of the interior angles in any triangle is 180°

∴ m∠C = 180 - (47 + 82) = 180 - 129 = 51°

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3 years ago

Find cosx if sinx cotx =0.5

Arada [10]

Answer:

cos x = 0.5

Step-by-step explanation:

Using the trigonometric identity

cot x = $\frac{cosx}{sinx}$

Given

sin x cot x = 0.5, then

sin x × $\frac{cosx}{sinx}$ = 0.5 ← cancel sin x on numerator/ denominator

cos x = 0.5

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4 years ago

What is the equation in slope intercept form of the line that passes through the points (-6,5) and (2,1) enter any fractions lik

Korvikt [17]

The equation of the line in slope-intercept form is given by

$y=mx+b$

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Find out the slope m

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$m=\frac{1-5}{2+6}=-\frac{4}{8}=-\frac{1}{2}$

step 2

Find out the equation of the line

we have

m=-1/2

point (2,1)

substitute and solve for b

$\begin{gathered} 1=-\frac{1}{2}(2)+b \\ \\ 1=-1+b \\ b=2 \end{gathered}$

therefore

The equation of the line is

$y=-\frac{1}{2}x+2$

Problem N 2

Write the equation of the line in the point-slope form that passes through the point (-2,3) and has a slope of 1/2

The equation of the line in point-slope form is given by

$y-y_1=m(x-x_1)$

we have

m=1/2

point (-2,3)

substitute

$\begin{gathered} y-3=\frac{1}{2}(x-(-2)) \\ \\ therefore \\ The\text{ answer is} \\ y-3=\frac{1}{2}(x+2) \end{gathered}$

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Answer:boynjm emwffw

Step-by-step explanation:

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3 years ago