All categories

2 years ago

If u say and answer the next few questions ill give u more points so

Mathematics

2 answers:

kkurt [141]2 years ago

8 0

Answer:

1) D. 14 cm

2) C. 43.96 cm

Step-by-step explanation:

First answer explanation:

Segment A to B would be 14 cm because the radius (middle to the bounding surface) is 7 cm so you just have to double that since you want to go from one side point to the other crossing through the middle.

The first answer is D.

Second answer explanation:

The circumference is basically the perimeter of a circle. To find the circumference you have to do 2pr (2*pi*radius). We know that the radius is 7 cm and pi is 3.14. Now we can plug the numbers in, 2*3.14*7 is the equation we have to solve. First we'll do 2*7 and get 14. Next we do the final step 3.14*14. We know that it has to be either A or C at this point because the other numbers are too low and if you think about it the answer has to be a decimal so it has to be C. If you want to do the multiplication that is fine but it is unnecessary.

SSSSS [86.1K]2 years ago

6 0

Answer:

1. D. 14

2. C. 43.9823

Step-by-step explanation:

C = 2πr = 2* π* 7 ≈ 43.9823

You might be interested in

$0.\overline{5} + 0.19\overline{4}$.

Scilla [17]

Answer:

$0.\overline{5} + 0.19\overline{4}=0.75$

Step-by-step explanation:

Given expression:

$0.\overline{5} + 0.19\overline{4}$

To evaluate the expression.

Solution.

The values are

$0.\overline{5}=0.555555......$

Let $X=0.555555.....$ -----------1

Multiplying 10 both sides.

$10X=5.555555....$ ----------2

Subtracting 1 from 2.

$10X=5.555555....$

- $X=0.555555.....$

-------------------------------------------

$9X=5.0$

Dividing both sides by 9.

$\frac{9X}{9}=\frac{5}{9}$

$X=\frac{5}{9}$

$0.19\overline{4}=0.194444....$

Let $Y=0.1944444..$

Multiplying both sides by 100

$100Y=19.44444..$ ------------3

Multiplying 1000 both sides.

$1000Y=194.4444....$ ----------4

Subtracting 3 from 4.

$1000Y=194.4444....$

- $100Y=19.44444.....$

-------------------------------------------

$900Y=175.0$

Dividing both sides by 900.

$\frac{900Y}{900}=\frac{175}{900}$

$Y=\frac{175}{900}$

So, we can evaluate the given expression as:

⇒ $0.\overline{5} + 0.19\overline{4}$

⇒ $X+Y$

⇒ $\frac{5}{9}+\frac{175}{900}$

Taking LCD = 900

⇒ $\frac{5\times 100}{9\times 100}+\frac{175}{900}$

⇒ $\frac{500}{900}+\frac{175}{900}$

Adding numerators.

⇒ $\frac{500+175}{900}$

⇒ $\frac{675}{900}$

⇒ $0.75$ (Answer)

7 0

3 years ago

Distribute 5x (3x + 7)

Reil [10]

Answer: 50

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

A 95% confidence interval for the mean of a population is to be constructed and must be accurate to within 0.3 unit. A prelimina

serious [3.7K]

Answer:

Sample size should be atleast 617

Step-by-step explanation:

given that a 95% confidence interval for the mean of a population is to be constructed and must be accurate to within 0.3 unit.

i.e. margin of error <0.3

Std devition sample = 3.8

For 95% assuming sample size large we can use z critical value

Z critical = 1.96

we have

$1.96 * std error 616.3634$

Sample size should be atleast 617 to get an accurate margin of error 0.3

7 0

3 years ago

Select the correct answer from each drop down menu. In the figure, AB=__inches and AC=___

BaLLatris [955]

Answer: In the figure AB is about 8.4 inches and AC is about 13.05 inches.

Step-by-step explanation: We can use cosine to find the hypotenuse. $cos(40)=\frac{10}{x} \\cos(40) (x)=\frac{10}{x}(x)\\cos(40) (x) =10\\\frac{cos(40) (x)}{cos (40)} =\frac{10}{cos (40)} \\x=\frac{10}{cos(40)}$

Using a calculator x is about 13.05

Using tangent we can find the length opposite of <C

$tan(40)=\frac{x}{10} \\tan(40) (10)=\frac{x}{10}(10)\\tan(40) (10) = x$

Using a calculator x would be about 8.4

4 0

3 years ago

Read 2 more answers

Cd+de=ef+de by the

meriva

Is this chemistry, their are many apps online that do you it automatically for u

3 0

3 years ago