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2 years ago

D is the midpoint of AB and E is the midpoint of BC. If AC=48, what is the length of DE ?

Mathematics

1 answer:

dangina [55]2 years ago

8 0

Answer:

24 is the answer for the following

Step-by-step explanation:

please mark me as brainlest

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Whats is 10% of 40 please answer this

Furkat [3]

Answer: 4

Step-by-step explanation:

3 0

3 years ago

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How do you write 0.0000006813 in scientific notation?

Free_Kalibri [48]

Answer:

6.813·10^7

Step-by-step explanation:

Multiplying 0.0000006813 by 10^7 will move the decimal point 7 places to the right, resulting in 6.813.

Conversely, multiplying 6.813 will move the decimal point 7 places to the left, producing the original decimal fraction.

Therefore,

0.0000006813 = 6.813·10^7

7 0

3 years ago

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A triangle is graphed in the coordinate plane. The vertices of the triangle have coordinates (–3, 1), (1, 1), and (1, –2). What

vladimir2022 [97]

Answer:

The perimeter of the triangle is $12\ units$

Step-by-step explanation:

Let

$A(-3,1),B(1,1),C(1,-2)$

we know that

The perimeter of triangle is equal to

$P=AB+BC+AC$

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

step 1

Find the distance AB

$A(-3,1),B(1,1)$

substitute in the formula

$AB=\sqrt{(1-1)^{2}+(1+3)^{2}}$

$AB=\sqrt{(0)^{2}+(4)^{2}}$

$AB=4\ units$

step 2

Find the distance BC

$B(1,1),C(1,-2)$

substitute in the formula

$BC=\sqrt{(-2-1)^{2}+(1-1)^{2}}$

$BC=\sqrt{(-3)^{2}+(0)^{2}}$

$BC=3\ units$

step 3

Find the distance AC

$A(-3,1),C(1,-2)$

substitute in the formula

$AC=\sqrt{(-2-1)^{2}+(1+3)^{2}}$

$AC=\sqrt{(-3)^{2}+(4)^{2}}$

$AC=5\ units$

step 4

Find the perimeter

$P=AB+BC+AC$

substitute the values

$P=4+3+5=12\ units$

6 0

3 years ago

Use the expression 8a + 16c.

irakobra [83]

Answer:

PA) 8

PB) 45

Step-by-step explanation:

PA) Find the prime factors of each term in order to find the greatest common factor (GCF).

PB)

Step 1:

(8 x 5) + (16 x -1)

Step 2: Multiply

40 + 15

Step 3: Add

5 0

3 years ago

Isabel needs to cut a square piece of wood with the area of 70 in.² approximate the size of the square and round to the nearest

Alla [95]

Answer: 8.4 inch

Step-by-step explanation:

To find the size of the square, just find the square root of 70. Because the area of a square is the side length squared

$\sqrt{70}$ = 8.3666 rounded to the nearest 10th is 8.4 inch

5 0

3 years ago