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IrinaVladis [17]
2 years ago
14

Twice the sum of eight and three times a number is seventy six. What is the number

Mathematics
1 answer:
Dahasolnce [82]2 years ago
3 0

From the question we can deduce the formula to be 16 + 3n = 76

3n - 76 - 16

3n = 60

n = 20

20 is the answer.

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Please need help explanation need it
nydimaria [60]

Answer:

308 m^3

Step-by-step explanation:

The volume is given by

V = l*w*h  where l is the length , w is the width and h is the height

V = 7*4*11

V = 308 m^3

7 0
2 years ago
jonathan meaking his favourite dish pasta,his mother mom ate 2/7 of pasta and his brother ate 1/6 of the pasta. how much did the
oee [108]

Answer:

19/42 or .4523809524 pasta eaten

Step-by-step explanation:

2/7+1/6=19/42 or .4523809524

8 0
3 years ago
Lily is cutting a piece of yarn into 3 (three) pieces. The 2nd piece is 3 times as long as the 1st piece, while the 3rd piece is
STatiana [176]

Answer:

The length of the first piece = 41 cm

Step-by-step explanation:

Let the length of the first piece = a

Let the length of the second piece = b

Let the length of the third piece = c

we are given the following:

b = 3a . . . . . (1)     (The 2nd piece is 3 times as long as the 1st piece)

c = 6 + a  . . . . (2)    (the 3rd piece is 6 centimeters longer than the 1st piece)

a + b + c = 211 . . . . . (3)    (  the yarn has a total length of 211 centimeters)

Next, let us eliminate two variables, and this can easily be done by substituting the values of b and c in equations 1 and 2 into equation 3. this is done as follows:

a + b + c = 211

a + (3a) + (6 + a) = 211       ( remember that   b = 3a; c = 6 + a)

a + 3a + 6 + a = 211

5a + 6 = 211

5a = 211 - 6 = 205

5a = 205

∴ a = 205 ÷ 5 = 41 cm

a = 41 cm

Therefore the length of the first piece (a) = 41 cm

now  finding b and c

substituting a into equation 1 and 2

b = 3a

b = 3 × 41 = 123

∴ b = 123 cm

c = 6 + a

c = 6 + 41 = 47

∴ c = 47 cm

6 0
3 years ago
Solve using substitution <br> x-10y=10<br> x= -10
34kurt
-10 -10y = 10
+10 +10

-10y = 20

20/-10 = -2

Y = -2
4 0
2 years ago
Read 2 more answers
PLEASE ANSWER CORRECTLY &lt;3 I WILL GIVE BRAINLIEST THANKS IN ADVANCE!
Vikentia [17]

Answer:

1: 130

2: 70

Step-by-step explanation:

Supplementary angles add up to equal 180

So to find the measure of the missing angles, we subtract the measure of the known angles from 180

For #1

∠B = 180 - 50

180 - 50 = 130

Hence ∠B = 130

For#2

∠D = 180 - 110

180 - 110 = 70  

Hence, ∠D = 70

8 0
2 years ago
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