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3 years ago

Helpppp mee pleaseeee

Mathematics

1 answer:

Zielflug [23.3K]3 years ago

6 0

Answer:

x = 10√3

Step-by-step explanation:

similar triangles ratio of sides

15 / x = x/20

cross multiply

x² = 300

x = √300 = √100√3 = 10√3

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Help??????????????????

Neko [114]

Answer:

Step-by-step explanation:

52= 1/2(64 + x)

52 = 32 + 0.5x

52-32= 32-32 + .5x

20=.5x

Divide both sides by .5x

X = 40.

5 0

3 years ago

Find the angle measures given the figure is a rhombus.

levacccp [35]

Answer:

solution,

In rhombus,diagonal bisects the angle,

<ABD+<DBC+<C=180°

or, <1+<1+56=180°

or, 2<1=180°-56°

or, 2<1=124

or, <1=124/2

<1=62°

hope this helps...

Good luck on your assignment..

6 0

4 years ago

In stratified random sampling,(A) randomly selected elements within each of the strata form the sample.(B) all elements within t

otez555 [7]

Answer: (A) randomly selected elements within each of the strata form the sample.

Step-by-step explanation:

Stratified random sampling is a random sampling technique in statistics .

It includes the partition of the entire population into sub-parts called strata.
The strata are formed on the basis of the characteristics shared by members .
After the formation of strata, researcher randomly selects participants from each strata to ensure that that the participant of every group must involve in the sample to represent each character.

Hence, the correct answer is :

(A) randomly selected elements within each of the strata form the sample.

8 0

3 years ago

Samantha and Mia each left Julia’s house at the same time. Mia walked north at 7 kilometers per hour. Samantha ran west at 11 ki

RoseWind [281]

The answer is 13.0 for the distance between Samantha and Mia after 1 hour.
$a ^{2} + b^{2} = {c}^{2} \\ {7}^{2} + {11}^{2} = {c}^{2}$

4 0

4 years ago

Read 2 more answers

Find either of the values of x 2x^2+3x-2=3

Serjik [45]

Answer:

x = 1 or x = -5/2

Step-by-step explanation:

Solve for x over the real numbers:

2 x^2 + 3 x - 2 = 3

Divide both sides by 2:

x^2 + (3 x)/2 - 1 = 3/2

Add 1 to both sides:

x^2 + (3 x)/2 = 5/2

Add 9/16 to both sides:

x^2 + (3 x)/2 + 9/16 = 49/16

Write the left hand side as a square:

(x + 3/4)^2 = 49/16

Take the square root of both sides:

x + 3/4 = 7/4 or x + 3/4 = -7/4

Subtract 3/4 from both sides:

x = 1 or x + 3/4 = -7/4

Subtract 3/4 from both sides:

Answer: x = 1 or x = -5/2

8 0

3 years ago