3 years ago

PLEASE HELP with this Geometry question

Mathematics

1 answer:

Gnoma [55]3 years ago

3 0

Step-by-step explanation:

DE = 5x-2

DF = 3(x+3)

3(x+3) = 3 + 5x-2

3x+9= 5x+1

2x=8

x=4

DE=5×4-2=18

DE=18

You might be interested in

victor want to make a book tower of height 48 cm .If the thickness of book is 12 mm ,how many books will he need to make the des

lions [1.4K]

Answer:

Step-by-step explanation:

1. Change 48 cm to mm, which will give you 480 mm

2. Divide 480 mm by 12 mm, that will give you 40

Therefore, Victor needs 40 books to make his desired height.

6 0

3 years ago

Rounding or compatible numbers to estimate the sum 620+107=

Rudik [331]

You could do 600+100=700 because it would be close to the actual rusult

6 0

4 years ago

Read 2 more answers

Please help! I don't understand this problem.

Andre45 [30]

Answer: 140cm 2

Step-by-step explanation: 8 x 5 = 40 x 4 = 115 + 25 = 140

3 0

3 years ago

Write a problem you can solve using the fractions 5/8 and 1 2/7. Explain how you can solve by simplifying a complex fraction. Sh

AnnyKZ [126]

Answer:

5/8 + 9/7 +107/56

Step-by-step explanation:

5/8+9/7=5x7/8x7+ 9x8/7x8=35/56 + 72/56= 35+52/56=107/56

The simplified version of this would be 1 51/56

PLEASE MARK AS BRAINLIEST!!!!!

3 0

3 years ago

Read 2 more answers

A set of three scores consists of the values 3, 7, and 2. Σ2(X – 3) =

siniylev [52]

Answer:

Step-by-step explanation:

$\sum 2(X-3)=2(3-3)+2(7-3)+2(2-3)=0+8-2=6$

5 0

2 years ago