All categories

3 years ago

In the diagram, AB = 10 and AC = 2 StartRoot 10 EndRoot. What is the perimeter of △ABC?

Mathematics

2 answers:

postnew [5]3 years ago

5 0

Answer:

Step-by-step explanation:

GarryVolchara [31]3 years ago

3 0

Answer:

Step-by-step explanation:

You might be interested in

Mortgage rates: Following are interest rates (annual percentage rates) for a 30-year fixed rate mortgage from a sample of lender

andreev551 [17]

Answer:

98% Confidence interval: (4.144 ,4.498)

Step-by-step explanation:

We are given the following in the question:

4.751, 4.373, 4.177, 4.676, 4.425, 4.228, 4.125, 4.251, 3.951, 4.192, 4.291, 4.414

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{51.854}{12} = 4.321$

Sum of squares of differences = 0.5602

$s = \sqrt{\dfrac{0.5602}{11}} = 0.226$

98% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 11 and}~\alpha_{0.02} = \pm 2.718$

$4.321 \pm 2.718(\frac{0.226}{\sqrt{12}} ) = 4.321 \pm 0.1773 = (4.144 ,4.498)$

3 0

4 years ago

Read 2 more answers

Can someone please help me to solve 3/4 problems pls i will mark you the brainly pls I need help

Gennadij [26K]

Answer:

3. x = 11.6

4. f = 2 g = 2

Step-by-step explanation:

3) (3x - 7) + (4x + 6) = 90 --> x = 11.6

4) 3f + 1 = 5f - 15 ---> f = 2

6g - 5 = 3f + 1

6g = 3(2) + 6 ---> g = 2

8 0

3 years ago

I feel like this should be easy but ldk

GrogVix [38]

Answer:

1962/18=109.

Division sign

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

In the diagram below, you are given that ∠AVD = ∠BVE = ∠CVF= 90° and ∠CVD = 22°. If ∠AVB= ∠EVF, how many degrees are in the meas

lana66690 [7]

Answer:

m∠AVF = 158°

Step-by-step explanation:

In the diagram attached,

m∠AVD = m∠BVE = m∠CVF = 90°

m∠CVD = 22°

∠AVB = ∠EVF

Since ∠AVD = ∠AVC + ∠CVD

Therefore, 90° = m∠AVC + 22°

m∠AVC = 90° - 22°

= 68°

Similarly, m∠CVF = m∠CVD + m∠DVF

90° = 22° + m∠DVF

m∠DVF = 68°

m∠AVC = m∠DVF = 68°

Now ∠AVF = ∠AVD + ∠DVF

= 90° + 68°

= 158°

3 0

3 years ago

Please help me out! I'm really really really really confused on this a (lesson: order of operation)

andriy [413]

64 : [4 x ( 27 - 5²)
= 64 : [ 4 x ( 27 - 25)
= 64 : ( 4 x 2)
= 64 : 8 = 8

5² = 5 x 5 = 25

50.64 - [4 x ( 27 - 5²)] = 50.64 - 4 ( 27 - 25) = 50.64 - 4 x 2 = 50.64 - 8 = 42.64

8 0

3 years ago

Read 2 more answers