3 years ago

A sample of the students at a middle school is selected by writing the

Mathematics

2 answers:

Paladinen [302]3 years ago

8 0

Answer:

Step-by-step explanation:

Ipatiy [6.2K]3 years ago

5 0

Answer:

I guess its B, but I am not sure

Sorry

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A car park has no parking spaces on the first floor. The second floor has double the amount of spaces on the first floor. The th

Artist 52 [7]

Answer:

85 parking spaces

Step-by-step explanation:

Given that :

Parking spaces on floors :

Let first floor = x

Second floor = 2x

Third floor = 2x + 3

Total parking spaces = 428

THEREFORE ;

x + 2x + 2x + 3 = 428

5x + 3 = 428

5x = 428 - 3

5x = 425

x = 425 / 5

x = 85

Hence, there are 85 parking spaces on the first floor

7 0

2 years ago

PLS HELP WILL MARK YOU BRAINLIEST!!!

Angelina_Jolie [31]

$\\ \sf\longmapsto (3x-2x^2+3)-(-5x^2+3x+5)$

$\\ \sf\longmapsto 3x-2x^2+3+5x^2-3x-5$

$\\ \sf\longmapsto 5x^2-2x^2+3x-3x+3-5$

$\\ \sf\longmapsto 3x^2-2$

6 0

2 years ago

Read 2 more answers

ANSWER ASAP PLEASE

vazorg [7]

Answer:

Step-by-step explanation:

6 0

2 years ago

What's the temperature change?

Alex787 [66]

A. +40

B. -19

C. +130

D. +53

5 0

3 years ago

Help plz:)))I’ll mark u Brainliest

babunello [35]

Answer:

h = 9

Step-by-step explanation:

cylinder A = $\pi$ $3^{2}$ *4 = 113.0973355 $m^{3}$

Cylinder B = 113.0973355 $m^{3}$

113.0973355 $m^{3}$ = $\pi$ $2^{2}$ *h

113.0973355 $m^{3}$ / 4 $\pi$ = h

8.999999999998 = h

I think b/c of the rounding error of rounding off pi, that h= 9

5 0

2 years ago