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4 years ago

Help me please I really don’t understand this....

Mathematics

1 answer:

natta225 [31]4 years ago

6 0

First, since AB and CD are parallel, you can find the value of C, which is a consecutive interior angle of A.
180-78=102
So, angle C is equal to 102°
Second, you can subtract 115 and 102 from 360 to find angle DCE.
360-115-102=143.
Third, add 32 to 143 to see if they add up to 180.
32+143=175
Since CD and EF are not connected by a 180° angle, they are not parallel.
I hope this is correct!

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A car cost $18,000, which is 9/10 of the cost of an apartment. A motorcycle cost 1/5 of the cost of the apartment or 4/5 of the

blagie [28]

Answer:

$1500

Step-by-step explanation:

let the cost of the apartment = x

Hence the cost of the car is $\frac{9}{10} \times x$

also given the cost of car=18000

Hence

$18000= \frac{9x}{10}$

$x= \frac{18000 \times 10}{9}$

$x= 2000 \times 10$

$x= 20000$

Motorcylce cost = $\frac{1}{5}$ of Cost of apartment

= $\frac{1}{5} \times 20000$

= $4000$

Also Motorcylce cost= $\frac{4}{5}$ of the cost of 100 soccer balls.

Hence

4000= $\frac{4}{5}$ x (cost of 100 soccer balls.)

(cost of 100 soccer balls.)= $\frac{4000 \times 5}{4}$

(cost of 100 soccer balls.)= $1000 \times 5$

cost of 100 soccer balls= $5000$

cost of 1 soccer balls = $\frac{5000}{100}$

cost of 1 soccer balls = 50

cost of 30 soccer balls = 50 x 30

cost of 30 soccer balls = 1500

Hence the cost of 30 balls is $1500

4 0

4 years ago

Convert 4(pi)/3 to degrees.

hoa [83]

Radian to degree conversion.
4(pi)/3 degrees= 4(pi)/3 × 180/pi radians

As pi radians= 180 degrees
Dividing both sides by pi :
pi / pi radian= 180/pi degrees
1 radian=180/pi degrees

4 × pi /3 × 180/ pi
pi and pi gets cancelled.
180/3= 60
4× 60
=240 degrees
Answer is option C.

8 0

3 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=a%5E%7B2%7D%20%20-%20b%20%5E%7B2%7D%20%20%2B%204b%20%20-%204" id="TexFormula1" title="a^{2} -

Radda [10]

Answer:

$\left(a+b-2\right)\left(a-b+2\right)$