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3 years ago

15

There are 25 kids in a class room , five kids are sitting at a desk and the rest are at a table what is the ratio of kids at a d

esk to oids at a table ?

1 answer:

Misha Larkins [42]3 years ago

3 0

Answer:

5:25 ; 1:5

Step-by-step explanation:

there's 5/25 at a table. replace the slash with a colon.

5:25. Then simplify, getting 1:5

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Expand the expression and combine like terms: 4(1.75y−3.5)+1.25y

Bas_tet [7]

4(1.75y−3.5)+1.25y . First multiply through with 4 the numbers in the parentheses. 7y➖ 14 ➕ 1.25y add 1.25y to 7y That will be 8.25y So the answer will be 8.25y ➖ 14

8 0

3 years ago

I’m stuck can some one help me

abruzzese [7]

Answer:

3) Midpoint is (-4,0.5)

Option A is correct.

4) Midpoint is (2.5,0)

Option B is correct.

5) The factors are (x+4)(x-7)

Option C is correct.

6) The factors are (x+4)(x+2)

Option A is correct.

Step-by-step explanation:

Question 3

Find midpoint of the following:

(2,-7), (-10,8)

The formula used to find midpoint is: $Midpoint=(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2} )$

We have $x_1=2, y_1=-7, x_2=-10,y_2=8$

Putting values and finding midpoint

$Midpoint=(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2} )\\Midpoint=(\frac{2-10}{2},\frac{-7+8}{2} )\\Midpoint=(\frac{-8}{2},\frac{1}{2} )\\Midpoint=(-4,0.5 )$

So, Midpoint is (-4,0.5)

Option A is correct.

Question 4

Find midpoint of the following:

(2,-10), (3,10)

The formula used to find midpoint is: $Midpoint=(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2} )$

We have $x_1=2, y_1=-10, x_2=3,y_2=10$

Putting values and finding midpoint

$Midpoint=(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2} )\\Midpoint=(\frac{2+3}{2},\frac{-10+10}{2} )\\Midpoint=(\frac{5}{2},\frac{0}{2} )\\Midpoint=(2.5,0 )$

So, Midpoint is (2.5,0)

Option B is correct.

Question 5

Factor each completely

$x^2-3x-28$

We will break the middle term and find factors

$x^2-3x-28\\=x^2-7x+4x-28\\Taking\:common\\=x(x-7)+4(x-7)\\=(x+4)(x-7)$

So, the factors are (x+4)(x-7)

Option C is correct.

Question 6

Factor each completely

$x^2+6x+8$

We will break the middle term and find factors

$x^2+6x+8\\=x^2+4x+2x+8\\=x(x+4)+2(x+4)\\=(x+4)(x+2)$

So, the factors are (x+4)(x+2)

Option A is correct.

7 0

3 years ago

Someone please help me with this.

liubo4ka [24]

Radius=r=0.7m
Volume=231m^3
Height=h

$\boxed{\sf Volume=\pi r^2h}$

$\\ \sf\longmapsto π(0.7)^2h=231$

$\\ \sf\longmapsto 0.49πh=231$

$\\ \sf\longmapsto πh=\dfrac{231}{0.49}$

$\\ \sf\longmapsto 3.14h=471.4$

$\\ \sf\longmapsto h=\dfrac{471.4}{3.14}$

$\\ \sf\longmapsto h=150m$

5 0

3 years ago

Х<br> – 5<br> 1<br> 4<br> 6<br> 1<br> у<br> 9<br> 0<br> -7<br> —1<br> Range

Wittaler [7]

Answer: 16

Step-by-step explanation:

Range is the largest number in the set minus the smalllest number in the set pf numbers or data.

9-(-7)

9+7

16

4 0

3 years ago

Read 2 more answers

Gavin needs to move up more than 4 spaces to win the game. is he likely to win on his next turn? what is the probability that he

Alborosie

Unlikely, 2/9 chance of winning

5 0

3 years ago