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3 years ago

A pair of corresponding side of two similar pentagons have length of 12cm and 28cm

Mathematics

1 answer:

ICE Princess25 [194]3 years ago

5 0

The ratio of their areas = 12^2 / 28^2

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Find two mixed numbers so that the sum is 15 3/10 and the difference is 8 5/10

Juliette [100K]

11 9/10 and 3 2/5

$\left \{ {{ 11\frac{9}{10}+3\frac{2}{5}=15\frac{3}{10}} \atop { 11\frac{9}{10}-3\frac{2}{5}=8\frac{5}{10}}} \right.$

To solve for this, you can create a series of two equations
$\left \{ {{y+x=15 \frac{3}{10} } \atop {y-x= 8\frac{5}{10} }} \right.$

After that, you solve one of the equations for x and plug it into the other equation.
$\left \{ {{x=15 \frac{3}{10}-y } \atop {y-x= 8\frac{5}{10} }} \right.$

${2y-15 \frac{3}{10}= 8\frac{5}{10}$

Then, solve for variable y
${2y=23 \frac{8}{10}$
${y=11\frac{9}{10}$

Then, you plug in this value for y into one of the original equations

$11\frac{9}{10}+x=15 \frac{3}{10}$

$x=15 \frac{3}{10} -11\frac{9}{10}$

$x=3 \frac{2}{5}$

8 0

3 years ago

Solve for x, the figure is a parallelogram. will give brainliest, pls show work !!

MakcuM [25]

Answer:

x = 7

Step-by-step explanation:

In a parallelogram the opposite angles are congruent, then

14x + 8 = 106 ( subtract 8 from both sides )

14x = 98 ( divide both sides by 14 )

x = 7

6 0

2 years ago

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At Mike's Moving Supplies, cardboard boxes are sold in packs of 5. Depending on the size, the

QveST [7]

Should be like 200 mins

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3 years ago

Caroline rolls a fair dice 90 times.

Darya [45]

Answer:

Answer: 45

Step-by-step explanation:

Of the possible numbers (1,2,3,4,5,6), 3 are greater than 3. The probability to roll a number greater than 3 is 3 over the 6 total. That can be simplified to 1/2 for the probability. If she rolls the dice 90 times 90 x 1/2 or 45 rolls will receive a number greater than 3.

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3 years ago

Which statement is true about the function f(x) = square root of x

BlackZzzverrR [31]

Answer:

Step-by-step explanation:

Correct choice is A

Step-by-step explanation:

Consider parent function The domain of this function is and the range of this function is

Thus, the function has the domain and the range

State the domain and the range of all given functions:

A. The domain:

B. The range:

C. The domain:

D. The range:

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3 years ago