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Andrews [41]
4 years ago
6

How can I solve this?

Mathematics
1 answer:
nadezda [96]4 years ago
7 0
About 12 would be the correct answer i may be wrong but i worked it out and got that idk how but i did
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Please help meeeee!!
Xelga [282]

Answer:

-27

Step-by-step explanation:

order of operations 2÷2 = 1 +53 =54

3x1 = 3 -5 = -2

54÷-2 = -27

5 0
3 years ago
2х + Зу = 9
umka2103 [35]

Answer:

3

Step-by-step explanation:

Given the 2 equations

2x + 3y = 9 → (1)

- 2x + 2y = 6 → (2)

Adding the 2 equations term by term will eliminate x

(2x - 2x) + (3y + 2y) = (9 + 6), that is

5y = 15 ( divide both sides by 5 )

y = 3

5 0
4 years ago
Help me plsssssss 2 1/2 x 3
expeople1 [14]
Exact form: 15/2
decimal form: 7.5
mixed number form: 7 1/2
5 0
3 years ago
A scooter travels 18 miles in the same time a bike covers 8 miles. If the rate of the scooter is two miles per hour than twice t
blsea [12.9K]

<u>ANSWER:  </u>

A scooter travels 18 miles in the same time a bike covers 8 miles.The rates of both scooter and bike are 8 miles per hour and 18 miles per hour

<u>SOLUTION: </u>

Given, a scooter travels 18 miles in the same time a bike covers 8 miles.  

The rate of the scooter is two miles per hour than twice the rate of the bike

We need to find both rates of scooter and bike.

Let the speed of scooter be x and speed of bike be y.

And, time taken to travel be t.

Then, for scooter:

\bold{distance = speed \times time}

18 = x \times t

$t=\frac{18}{x}$  --- (1)

For bike:

\bold{distance = speed \times time}

$8=y \times t$

$\mathrm{t}=\frac{8}{y}$  --- (2)

Now, equate both (1) and (2)

$\frac{18}{x}=\frac{8}{y}$

On cross-multiplication we get

18y = 8x

4x – 9y = 0  ---- (3)

We also know that, rate of the scooter is two miles per hour than twice the rate of the bike.

x = 2 + 2y ---- (4)

Now substitute (4) in (3)

4(2 + 2y) – 9y = 0

8 + 8y – 9y = 0

9y – 8y = 8

y = 8.

Again substitute y value in (4)

x = 2 + 2(8) = 2 + 16

x = 18.

Hence, the rates of both scooter and bike are 8 and 18 miles per hour

8 0
4 years ago
What is the volume of the regular pyramid below?
Debora [2.8K]

Answer:

the picture isn't attached to the problem !

4 0
3 years ago
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