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4 years ago

The perimeter of GHJ

Mathematics

1 answer:

Dafna1 [17]4 years ago

6 0

They have a scale factor of 5:6 so first we need to find the perimeter of KLM:
$11 + 14 + 17 = 42$
Then apply the scale factor of 5:6:
$\frac{5}{6} = \frac{x}{42}$
Set the denominators equal:
$\frac{35}{42} = \frac{x}{42}$
So we see that the perimeter of GHJ is 35.

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There are 26 cards in a hat, each of them containing a different letter of the alphabet. If one card is chosen at random, what i

mylen [45]

Answer:

0.81

Step-by-step explanation:

The letters between L and P are M,N,O.

It is inclusive, so we have 5 letters L,M,N,O,P.

The letters which we can choose we have 26-5=21.

The probability to choose a letter not between L and P is 21/26=0.81

The solution is 0.81, ie,

You have 81% chance to choose latter not between L and P.

4 0

4 years ago

PLLLLEEEEEEAAASSSSSSSSEEEE

mrs_skeptik [129]

Given:

Line a passes through (2, 10) and (4, 13).

Line b passes through (4, 9) and (6, 12).

Line c passes through (2, 10) and (4, 9).

To find:

Which of the lines, if any are perpendicular.

Solution:

If a line passes through two points, then the slope of line is

$m=\dfrac{y_2-y_1}{x_2-x_1}$

Line a passes through (2, 10) and (4, 13). So, slope of this line is

$m_a=\dfrac{13-10}{4-2}=\dfrac{3}{2}$

Line b passes through (4, 9) and (6, 12). So, slope of this line is

$m_b=\dfrac{12-9}{6-4}=\dfrac{3}{2}$

Line c passes through (2, 10) and (4,9). So, slope of this line is

$m_c=\dfrac{9-10}{4-2}=\dfrac{-1}{2}$

Product of slopes of to perpendicular lines is -1.

$m_a\cdot m_b=\dfrac{3}{2}\times \dfrac{3}{2}=\dfrac{9}{4}\neq -1$

$m_b\cdot m_c=\dfrac{3}{2}\times \dfrac{-1}{2}=\dfrac{-3}{4}\neq -1$

$m_a\cdot m_c=\dfrac{3}{2}\times \dfrac{-1}{2}=\dfrac{-3}{4}\neq -1$

Therefore, any of these lines are not perpendicular to each other.

8 0

4 years ago

Please help me with number 9-10

Finger [1]

(10). 423,,,,,,,,,,4.10=40.. Hopefully that's help u

7 0

3 years ago

An investment of 11,000 is made into an account that earns 4.25% annual compound interest for 30 months. Assuming no other depos

LenKa [72]

Answer:

It should be $12168.75

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 4.25%/100 = 0.0425 per year,

then, solving our equation

I = 11000 × 0.0425 × 2.5 = 1168.75

I = $ 1,168.75

The simple interest accumulated

on a principal of $ 11,000.00

at a rate of 4.25% per year

for 2.5 years is $ 1,168.75.

1,168.75 + 11000 = 12168.75

5 0

3 years ago

Pls help me ee brainly

nataly862011 [7]

Answer:

56/5 / 4/5

56/5 x 5/4

280/20

the first option, 14, because the number of catalogs is 56/5 % 4/5, is correct.

Step-by-step explanation:

3 0

3 years ago