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Ket [755]
3 years ago
6

10. The sum of two numbers is 102. One number is three less than twice the other.

Mathematics
1 answer:
netineya [11]3 years ago
7 0

Answer:

(2n -3) + n = 102

2n - 3 + n = 102

3n - 3 = 102

3n = 105

n = 35 (the first number)

SO...

The other number is (2 x 35) - 3 =

                                           70 - 3 = 67 (the second number)

The numbers are 35 and 67.

35 + 67 = 102 CHECK!

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3. Find two possible lengths for CD if C, D, and E
Kaylis [27]

Given :

C, D, and E  are col-linear, CE = 15.8 centimetres, and DE=  3.5 centimetres.

To Find :

Two possible lengths for CD.

Solution :

Their are two cases :

1)

When D is in between C and E .

.                   .           .

C                  D          E

Here, CD = CE - DE

CD = 15.8 - 3.5 cm

CD = 12.3 cm

2)

When E is in between D and C.

.       .                .

D      E              C

Here, CD = CE + DE

CD = 15.8 + 3.5 cm

CD = 19.3 cm

Hence, this is the required solution.

3 0
3 years ago
My daugher is trying to <br>Solve -7.8x=-1.56  
Hunter-Best [27]
You would just have to isolate for x
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8 0
4 years ago
Y² - 11y + 21.25 = 0
Elodia [21]

Answer:

y=17/2 y=5/2

Step-by-step explanation:

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7 0
3 years ago
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What is 470,925.8 in expanded form
ICE Princess25 [194]

470,925.8 in expanded form is ...

400,000 + 70,000 + 900 + 20 + 5 + 0.8

Hope this helps

Brainliest is always appreciated

Give me a thanks

3 0
3 years ago
Read 2 more answers
Whoever helps me will be lucky for the rest of your life
Anvisha [2.4K]

Answer:

A) 3.5

16 shovels full

Step-by-step explanation:

9x + 13 = 17x - 15

8x = 28

x = 3.5

20 + 5x = 32 + 4.25x

0.75x = 12

x = 16

7 0
3 years ago
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