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2 years ago

I need the answer quick!! i also will try to mark brainiest

Mathematics

1 answer:

mariarad [96]2 years ago

5 0

Answer:

$\sqrt{29}$

Step-by-step explanation:

using the distance formula

d = √(x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = (- 2, - 3) and (x₂, y₂ ) = (- 4, 2)

d = $\sqrt{(-4+2)^2+(2+3)^2}$ = $\sqrt{4+25}$ = $\sqrt{29}$ ← in exact form

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Data was collected on reaction time of both hands for an experiment. 14 out of 27 students had a faster reaction time with their

VladimirAG [237]

Answer:

0.3902

Step-by-step explanation:

The question meets the criteria for the calculation of the confidence interval of a one sample proportion ;

Sample size, n = 27

Number of students with faster reaction time = 14

Phat = x / n = 14 / 27 = 0.6296

The confidence interval is calculated thus :

C. I = Phat ± Zcritical * √[p(1 - p)/n]

Zcritical at 99% = 2.576

C. I = 0.6296 ± 2.576 * √[0.6296(0.3704)/27]

C.I = 0.6296 ± 0.2394042

The lower boundary of C.I = 0.6296 - 0.2394042

Lower boundary = 0.3902

8 0

2 years ago

Which expression can be used to approximate the expression below,for all positive number a,b and x where a =/ 1 and b=/ 1

rodikova [14]

Answer:

The correct option is 1.

Step-by-step explanation:

The given expression is

$log_ax$

The value of a is 1 and the value of b is 1.

According to the logarithm property,

$log_mn=\frac{log_pm}{log_pn}$

Using this property, we get

$log_ax=\frac{log_bx}{log_ba}$

The required expression is $\frac{log_bx}{log_ba}$ .

$log_1x=\frac{log_1x}{log_11}$

$log_1x=log_1x$ $[\because log_aa=1]$

Left hand side is equal to the right hand sides, therefore option 1 is correct.

4 0

2 years ago

Please find out what y=mx+c picture is attached above pls help!

mel-nik [20]

First of all, your sample equation is wrong, it is y=mx+b, not y=mx+c, but anyway, the finished equation is going to be y=3, hope this helps

3 0

2 years ago

The length of a rectangle is three more than twice its width the perimeter of a rectangle is 42 cm what is the length of the rec

Maurinko [17]

Answer:

The length of the rectangle is 15 cm.

Step-by-step explanation:

breadth(b)=?

length(l)= 3+2b

perimeter(P)= 42 cm

Now,

P = 2 ( l+b )

or, 42= 2 ( 3+2b+b)

or, 42 = 2 ( 3+3b)

or, $\frac{42}{2}$ = 3+3b

or, 21 = 3+3b

or, 21-3 =3b

or, 18 = 3b

or, $\frac{18}{3}$ = b

or, 6 = b

Here, Breadth(b)= 6 cm

Length (l) = 3 + 2*6

= 3 + 12

=15 cm

5 0

3 years ago

What is 3/5 written as a decimal? a 0.12 b 0.3 c 0.6 d 1.67

horsena [70]

Answer: 0.6 so c

Step-by-step explanation:

7 0

2 years ago