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3 years ago

Perimeter of polygon abcd

Mathematics

1 answer:

sergey [27]3 years ago

6 0

aaaaaaaaaa

aaa

a + b+ c+d

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yo, can someone give me an algebraic expression with work that equals 3? & it also has to include addition & multiplicat

GREYUIT [131]

(y x 2) +7= X

2 - 7= -4

and (-4 x 2) +7= 3

I hope this helps, sorry it took awhile! ^_^

6 0

3 years ago

Mr. Brackett works in factory with his two sons. He is really happy with his job because he gets to spend some time with his bel

PilotLPTM [1.2K]

Answer:

840 minutes

Step-by-step explanation:

We solve this question using the LCM Method

Find and list multiples of each number of minutes which is given in the quest as 140, 210 and 280 minutes until the first common multiple is found. This is the lowest common multiple.

Multiples of 140:

140, 280, 420, 560, 700, 840, 980, 1120

Multiples of 210:

210, 420, 630, 840, 1050, 1260

Multiples of 280:

280, 560, 840, 1120, 1400

Therefore,

LCM(140, 210, 280) = 840

Therefore, they would have to wait after their first break together to get together again after 840 minutes

3 0

3 years ago

7. In triangle ABC, side AB is 2 cm shorter than side

Mamont248 [21]

Answer:

AC = 21, AB = 19, and BC = 22

Step-by-step explanation:

If x is the length of AC, then:

AB = x − 2

BC = x + 1

The perimeter is the sum of all three sides:

62 = x + x − 2 + x + 1

62 = 3x − 1

63 = 3x

x = 21

Therefore:

AC = 21, AB = 19, and BC = 22

3 0

3 years ago

The polynomial 2x3 − 5x2 + 4x − 10 is split into two groups, 2x3 + 4x and −5x2 − 10. The GCFs of each group is then factored out

miskamm [114]

Answer:

(x² + 2)(2x - 5)

Step-by-step explanation:

assuming the expression has to be factorised

2x³ - 5x² + 4x - 10 ← rearranging terms as indicated

= 2x³ + 4x - 5x² - 10 ( factor the first/second and third/fourth terms )

= 2x(x² + 2) - 5(x² + 2) ← factor out (x² + 2) from each term

= (x² + 2)(2x - 5) ← in factored form

8 0

3 years ago

The sum of a number y and 9 is a least -1

Nataly_w [17]

Answer:

Y+9>= -1

Step-by-step explanation:

The sum of a number y and 9 means that we wanna add Y and 9, but since y is a variable and 9 is just a number, we can't add them.

Now we have Y+9

Now, we plug in our inequality sign which is at least.

at least is >=

Now we have Y+9>=

And all you have to do is place the negative one after the inequality sign, and you get Y+9>= -1

Hope this helps! :)

8 0

4 years ago