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3 years ago

Please help please help please help please help

Mathematics

2 answers:

Semenov [28]3 years ago

6 0

Answer:

here is your answer,

circumference of a circle = 2×pi×r

= 2 × 3.14 × 4

= 8 × 3.14

= 25.12

<u>hope this helps</u>

Andre45 [30]3 years ago

5 0

Answer:

The answer is 25.13 because the formula is C=2π4 (2 • pi • 4)

Step-by-step explanation:

Four is the radius so you multiply is by pi and two and get 25.13

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Can someone please help me with this question? Thank you!

Goryan [66]

Answer: A

<u>Step-by-step explanation:</u>

$\stackrel\frown{XY}$ ≅ $\stackrel\frown{YZ}$

⇒ ∠XOY ≅ ∠ZOY

$\overline{XO}$ ≅ $\overline{ZO}$ since they are both a radius

$\overline{OY}$ ≅ $\overline{OY}$ based on reflexive property

∴ ΔXOY ≅ ΔZOY by SAS

So, $\overline{XY}$ ≅ $\overline{ZY}$ by CPCTC

ZY = 10.2 is given

so, XY = 10.2 by substitution property

4 0

3 years ago

Question is in picture posted but this needs 20 characters so here ya go

Katyanochek1 [597]

Answer:

Step-by-step explanation:

The dilation with the center of dilation at the origin and scale factor of 4 has the rule

(x,y)→(4x,4y).

Thus,

A(-1,3)→A'(-4,12)
B(2,1)→B'(8,4)
C(-2,-1)→C'(-8,-4)

A'(-4,12) - option B

B'(8,4) - option C

C'(-8,-4) - option D

3 0

2 years ago

Select the best answer for the question

Ksivusya [100]

Answer:

the answer is20 inches

Step-by-step explanation:

a square has 4 sides so you divide the total of 80 by 4.

80÷4=20

6 0

3 years ago

A survey study is to be made to estimate the proportion of residents of a certain suburb who favor the construction of a public

lesya [120]

Answer: 601

Step-by-step explanation:

When the prior estimate of population proportion is not given , the formula we apply to find sample size :

$n=0.25(\dfrac{z^*}{E})^2$

, where z* = critical z-value

E=Margin of error

Given : Margin of error = 0.04

Confidence level = 95%

We know that , according to the z-table , the critical value for 95% confidence interval = z*= 1.960

Then, the required sample size : $n=0.25(\dfrac{1.960}{0.04})^2$

$n=0.25(49)^2$

$n=0.25(2401)=600.25\approx601$

Hence, the required minimum sample size = 601

4 0

3 years ago

Find the bank discount and proceeds using ordinary interest for a loan to michelle anders for 7,200 at 8.25% annual simple inter

FromTheMoon [43]

Answer:

$145.5

Step-by-step explanation:

Period, t = August 8.to November 8 = 3 months

Simple interest formula :

A = P(1 + rt)

A = final amount =. 7200

7200 = P(1 + (0.0825 * 3/12))

7200 = P(1 + 0.020625)

7200 = P(1.020625)

7200 = 1.020625P

P = 7200 / 1.020625

P = 7054.5009

Bank discount :

A - P

7200 - 7054.5009

= $145.4991

= $145.5

6 0

2 years ago