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3 years ago

Given that x =4 and y= 1 over 2, find the value of 2x²- 3xy

Mathematics

2 answers:

jarptica [38.1K]3 years ago

7 0

Answer:

Step-by-step explanation:

Lubov Fominskaja [6]3 years ago

6 0

Step-by-step explanation:

given that x=4 and y=1/2

2*4*4 - 3*4*(1/2) = 32 - 6 = 26

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Store A: $25 for a 45 minute lesson Store B: $30 for a 1 hour lesson Store C: $45 for a 1.5 hour lesson Store D: $80 for three 1

Vikentia [17]

Answer: Store C by far, less money more time.

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

For the choir concert, the choir director has asked that everyone wear either black pants or blue jeans. Three times as many stu

Katyanochek1 [597]

Answer: 33 students wore blue jeans .

Step-by-step explanation:

Let x be the number of black pants.

Given : For the choir concert, the choir director has asked that everyone wear either black pants or blue jeans.

Three times as many students wore black pants as blue jeans.

i.e. Number of blue pants = 4x

If there are forty-four students in the choir, then we have

$x+3x=44\\\\\Rightarrow\ 4x=44$

Divide both sides by 4 , we get

$x=11$

Thus , the number of black pants = 11

Then , the number of blue pants = $3\times11=33$

Therefore, 33 students wore blue jeans .

6 0

3 years ago

Use the multiplier method to increase £258 by 43%<br>You must show your working.

raketka [301]

Hello there, to answer your question...

258, percentage increased by 43% (percent) of its value

I hope this information helps.

8 0

3 years ago

Can someone write it on paper so I can copy

Darina [25.2K]

Answer:

453/ 2 = 226.5 rounds to 227

672/ 5 = 134.4 rounds to 134

1,294/ 4 = 323.5 rounds to 326

Step-by-step explanation:

8 0

3 years ago

On a map the distance from Fort Collins to Cheyenne is 3.2 inches. The angle formed at Laramie has measure 43.6º, and the angle

MArishka [77]

We can solve this by drawing a triangle with three points. The first point at Fort Collins (F), the second at Cheyenne (C) and the third at Laramie (L).

The angle at F = 46.5, the angle at L = 43.6. We know the side opposite angle L = 3.2 (side FC), now we must solve for the side opposite angle F (side LC).

We can use the law of sines to solve this where:

sinA/a = sinB/b
sin43.6/ 3.2 = sin46.5/LC
LC = 3.2 (sin46.5/sin43.6)
LC = 3.37 inches

We are told 1 in = 10.6 miles, therefore:

3.37 inches x 10.6 miles/in = 36 miles from Laramie to Cheyenne.

7 0

3 years ago