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3 years ago

PLEASE HELP ME ASAP I WILL MARK YOUR ANSWER THE BRAINLIEST !!

Mathematics

1 answer:

Stells [14]3 years ago

3 0

Answer:

they might be affordable bc no one wants to put their money in that bank bc it gets stolen by the shark dude or something

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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

Segment AN is the altitude to side BC in ΔABC. If AB = 3NC and AN = 2NC, prove that AC = BN. (Hint: Use variables in such proble

fomenos

Answer :

The proof is as follows :

Step-by-step explanation:

Let NC = x

⇒ AB = 3x and AN = 2x

In Δ ABN, By using Pythagoras theorem,

AB² = BN² + AN²

⇒ BN² = AB² - AN²

⇒ BN² = (3x)² - (2x)²

⇒ BN² = 5x²

⇒ BN = x√5 .......................(1)

Now in ΔANC , Using Pythagoras theorem We have,

AC² = NC² + AN²

⇒ AC² = x² + (2x)²

⇒ AC² = 5x²

⇒ AC = x√5 ....................(2)

From equations (1) and (2) We get,

AC = BN , which is our required result

4 0

4 years ago

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A quadrilateral has two right angles. The measure of the third angle is 99 degrees. What is the measure of the fourth angle.

kogti [31]

since it is a quadrilateral, all the sides will add to 360. If two angles are 90, and one is 99, add them and subtract from 360. The last angle should be 81 degrees.

4 0

3 years ago

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If x=1 y= -1, a= -2, b=3, then value of ax+by is_____

Thepotemich [5.8K]

Answer:

- 5

Step-by-step explanation:

Substitute the given values into the expression

ax + by

= (- 2 × 1) + (3 × - 1)

= - 2 + (- 3)

= - 2 - 3

= - 5

4 0

3 years ago

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Can someone help me pls

ratelena [41]

Answer:

Step-by-step explanation:

4 friends went and X will represent the amount they spent

3 0

3 years ago

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