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Karolina [17]
3 years ago
9

How do i simplify this expression?3(a-7)=?​

Mathematics
1 answer:
kolbaska11 [484]3 years ago
3 0

Answer: 3a-21

Step-by-step explanation:

Apply distributive property

a=3-3*7

Multiply 3*7=21

Answer: 3a--21

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cost $12 for adults and 5$ for children .on the first day of the fair 312 tickets were sold for a total of 2204$.How many adults
IrinaVladis [17]

The number of adult tickets and children tickets sold were 92 and 220 respectively

What differentiate adult tickets from children's

The adult tickets can be represented by a while children's ticket is c

The total number of tickets sold which is 312 means the sum of a and c

a+c=312

Total value of adult tickets=a*12

total value of children tickets=c*5

12a+5c=2204

Solve for a in the first equation

a=312-c

substitute for a in the second equation

12a+5c=2204

12(312-c)+5c=2204

3744-12c+5c=2203

3744-2203=12c-5c

1541=7c

c=1541/7

c=220

a=312-220

a=92

Find out more about ticket pricing on: brainly.com/question/13711180

#SPJ1

3 0
2 years ago
EASY QUESTION**
vladimir2022 [97]
F(x)= -x^3+x ( don’t add the ^ but replace it with the 3 if you know what i mean )
5 0
3 years ago
Ill mark brainliest if correct​
9966 [12]

Answer:

C) 36

Step-by-step explanation:

y = a(b^x) = a(1 + r)^x

Here, 1 + r = 1 + 0.36, so 0.36 is the rate.

0.36 = 36%

Answer: C) 36

7 0
3 years ago
Two angles are supplementary. One measures (3x) degrees and the other measures 51 degrees.
Fed [463]

Answer:

a. 3x +51=180

x=43

b. 3(43)+51 =180 51 degrees; 129 degrees

Step-by-step explanation:

3x +51 =180

3x=180-51

3x=129

x=43

4 0
2 years ago
A solid oblique pyramid has a square base with edges measuring x cm. The height of the pyramid is (x + 2) cm.
sasho [114]

Answer:

Hello,

Answer A StartFraction x cubed + 2 x squared Over 3 EndFraction cm3

Step-by-step explanation:

V=x^2*\dfrac{x+2}{3} \\\\\boxed{V=\dfrac{x^3+2x^2}{3} }\\

the third of the sum of the cube of x and double of the square of x ( cm³)

6 0
3 years ago
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