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3 years ago

Divide 180 in a ratio of 4:5:9

Mathematics

1 answer:

Alina [70]3 years ago

8 0

(4 x 20) 9 = 180.......

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Arithematic mean between 2-x and 2+x

alexgriva [62]

Answer:

Step-by-step explanation:

The mean is calculated as

mean = $\frac{sum}{count}$ = $\frac{2-x+2+x}{2}$ = $\frac{4}{2}$ = 2

6 0

3 years ago

Someone pls pls answer this ill mark u brainliest

Marysya12 [62]

Answer:

$m\angle CBD=35^{\circ}$

Step-by-step explanation:

Since there are $180^{\circ}$ on each side of a line and $\angle ABC$ is marked as a right angle, $m\angle CBE=180-90=90^{\circ}$ .

$m\angle CBE=m\angle DBE+m\angle CBD$ , and $m\angle DBE$ is given as $55^{\circ}$ .

Therefore, we can plug in our values and solve:

$90=55+m\angle CBD,\\m\angle CBD=\fbox{35^{\circ}$}$ .

3 0

3 years ago

Could anyone help me with this? Thanks in advance x

alexira [117]

Answer:

find b: since the triangle is right angle triangle apply the Pythagorean theorem

c²+b²=d²

b²=d²-c²

b²=16²-12²

b²=256-144

b²=112

the sum of the angle of the triangle=180

( in top Δ abd ) sin Ф=opp/hyp

sinФ=b/d=4√7/16= √7/4 radian

convert to degrees : √7/4 *180/π= 37.91 almost 38 degrees

<h2>which makes A= 38 degrees ( adjacent angles are equal when they have common side and do not overlap)</h2>

find a=?? apply law of cosine

a²= d^2 + c^2 − 2dc cosA

a²=16² + 12²-2(16)(12)cos38

a =√(16² + 12²-2(16)(12)cos38)

<h2>a=9.87 rounded to the nearest hundredth</h2>

(i hope it is right )

5 0

3 years ago

If the bus drivers name is bob and on the first stop he picked up 10 kids and on the second stop he picked up 12 and the bus is

Karo-lina-s [1.5K]

Answer: Bob

Step-by-step explanation: “if the bus drivers name is Bob”

There was a bunch of added information to throw you off.

7 0

3 years ago

Read 2 more answers

HELP PLEASE HELP!!!!!!!

Ket [755]

If we are to write this equation in slope-intercept form, it will be in y = mx + b, where m is the slope of the line and b is the y intercept. We need then to find the slope of the line using 2 points on the line and filling in the slope formula to find the slope. One of the points we can use is (0, 3) which is also the y intercept. The y-intercept is found where x = 0. Where x = 0, y = 3. So b = 3. Now for the slope we will use (0,3) and (4,4): $m= \frac{4-3}{4-0} = \frac{1}{4}$ . Using that m value and that b value we have the equation $y= \frac{1}{4}x+3$ . There you go!

3 0

3 years ago