All categories

3 years ago

HELP PLS I WILL GIVE BRIANLY!

Mathematics

1 answer:

ZanzabumX [31]3 years ago

8 0

Answer:

20m

Step-by-step explanation:

The rooms are 4m x 5m.

To find the area, multiply length by width: 4*5=20

You might be interested in

5) Write the expression as a product of two factors.

rosijanka [135]

Answer:

c) is the right answer.

Step-by-step explanation:

<u>The Skills needed are: GCF, Division, and Factoring</u>

If you want a product of 2 factors, and you have 2 variables, one of the factors will be a number.

Here we have:

12x + 18y-60

1) We need to find the GCF (Greatest Common Factor) of all coefficients (12,18, and 60)

-12's factors are: 1,2,3,4,6,12

-18's factors are: 1,2,3,6,9,18

-60's factors are: 1,2,3,4,5,6,10,12,15,20,30,60

The GCF, or the biggest factor all these numbers share is: 6

2) So we can take out the 6 from all of these.

-12x/6=2x

-18y/6=3y

-60/6=10

Our new expression with the 6 taken out would be: 6(2x + 3y - 10)

The only answer that has this is c)

Hope you understood and have a nice day!!

4 0

3 years ago

Write an equation in point -slope form for the line through the given point that has the given slope.

faltersainse [42]

Answer:

1. y=6x-22

Step-by-step explanation:

point-slope form equation : y=mx+b

1. (3, -4) m=6

Sub the numbers is

y=-4 / x=3 / m = 6

-4=6*3+b

-4=18+b

b=-22

So your equation would be y=6x-22

2. (4, 2) m=-5/3

sub the numbers into the equation

y=2 / x=4 / m= 5/3

2=4*5/3+b

2=20/3+b

b=8 2/3

so the equation would be

y=-5/3x+8 2/3

3. (0,2) m=4/5

sub the numbers into the equation

2=0*4/5+b

b=2

so the equation would be

y=4/5x+2

4. (-2, -7) -3/2

sub the numbers into the equation

-7=-3/2*-2+b

b=-10

so the equation would be

y= 3/2x-10

5. (4,0) 1

sub the numbers into the equation

0=1*4+b

b=-4

so the equation would be

y=x-4

6. (5,-8) -3

sub the numbers into the equation

-8=5*-3+b

-8=-15+b

b=7

so the equation would be

y=-3x+7

7. (-5, 2) 0

sub the numbers into the equation

2=-5*0+b

b=2

so the equation would be

y=2

8. (1, -8) -1/5

sub the numbers in

-8=1*-1/5+b

b= 7 3/5

so the equation would be

y=-1/5x + 7 3/5

9. (-6,1) 2/3

sub the number in

1=2/3*6+b

b=-3

so the equation would be

y=2/3x-3

4 0

3 years ago

Read 2 more answers

Identify the two rational numbers.

galina1969 [7]

Answer: A. 1.01 Same as 1 1/100 fractions are rational

B. 57 Integers are rational. (Invisible implied denominator is 1)

Step-by-step explanation: c might be, but the denominator is not specified-- or maybe / is supposed to mean square root. So probably not.

D. NO, non-repeating decimal numbers are irrational

7 0

3 years ago

The pulse rates of 174 randomly selected adult males vary from a low of 39 bpm to a high of 111 bpm. Find the minimum sample siz

Daniel [21]

Answer:

a. The sample size is approximately 97 adults

Step-by-step explanation:

The given parameters are;

The number of adults surveyed, n = 174

The lowest value of the pulse rate = 39 bpm

The highest value of the pulse rate = 111 bpm

The level of confidence used for determining the sample size = 90%

The given sample mean = 3 pm of the population mean

a. The range rule of thumb states that the standard deviation is approximately one quarter (1/4) of the range

The range = 111 bpm - 39 bpm = 72 bpm

Therefore, the standard deviation, σ = 72 bpm/4 = 18 bpm

The sample size, 'N', is given as follows;

$N = \dfrac{z^2 \cdot p \cdot q}{e^2}$

Where;

N = The sample size

z = The confidence level, 90% (z-score at 90% = 1.645)

p·q = σ² = 18² = 324

e² = 3² = 9

$N = \dfrac{1.645^2 \times 324}{3^2} = 97.4169$

Therefore the appropriate sample size, N ≈ 97 adults.

8 0

3 years ago

Suck at maths! HELP!

Lynna [10]

Answer:

Step-by-step explanation: you can use a protractor if you have 1 or seeing as the bottom left is 65, the bottom right will be the same, mostly a guess but half 65 and try that.

3 0

3 years ago

Read 2 more answers