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3 years ago

Math help mee plzzzzzz THERE IS A ATTACHMENT SO WAIT AT LEAST 30 SECONDS PLZZZZ

Mathematics

2 answers:

Bas_tet [7]3 years ago

8 0

10. 2800 = 500 + 2x
-500 -500
2x = 2300
/2 /2

x = 1150
the cost for one month is $1150

11. 20-3h=2
-20 -20

-3h = -18
/-3 /-3

h = 6

12. g/7-15=-12
+15 +15
g/7=3 >> (7/1)*(g/7) = 3(7)

g = 21

13. 17= p-3-3p
2p-3=17
+3 +3
2p = 20
/2 /2

p = 10

14. -4(r+6)=-63 (distribute)
-4r-24=-63
+24 +24

-4r = 39
/-4 /-4

r = -9 3/4

15. 4x+3(x-2)=-20
4x+3x-6=-20
+6 +6

7x = -14
/7 /7

x = -2

16. 3n-5=7n+11
-3n -3n

7n-11=-5
+11 +11

7n = 6
/7 /7

n = 6/7

17. -6a+3=-3(2a-1)
/-3 /-3

-2a+1=-2a+1
+2a-1 +2a-1

0 = 0

18. 2y+5=1/2(4y+8) >> multiply both sides by 2/1
2(2y+5)=4y+8

4y+10=4y+8
-4y -4y

10 $\neq$ 8

yarga [219]3 years ago

4 0

I hope this helps you

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The county fair charges $2.50 per ticket for the rides. Henry bought 15 tickets for the rides and spent a total of $55.50 at the

san4es73 [151]

Answer:

(A) $18

(B) $y=2.50x+18$ 

(C) Coefficient of x-term represents the cost for each ride ticket and constant term represents the cost of admission to the fair.

Step-by-step explanation:

(A)

The county fair charges $2.50 per ticket for the rides and Henry bought 15 tickets for the rides.

So, the total cost of the 15 tickets will be: $(\$2.50*15)= \$37.50$

He spent total $55.50 on ride tickets and fair admission.

So, the cost of admission to the fair will be: $(\$55.50-\$37.50)= \$18$

(B)

If $x$ represents the number of ride tickets and $y$ represents the total cost, then the cost for $x$ number of ride tickets is $\$2.50x$

So, the linear equation that can be used to determine the cost for anyone who pays for ride tickets and fair admission will be: $y= 2.50x+18$

(C)

In the above linear equation, coefficient of x-term is 2.50, which represents the cost for each ride ticket.

And the constant term is 18, which represents the cost of admission to the fair.

4 0

3 years ago

A bookcase has two shelves. The top shelf has 10 more than 1/3 the number of books on the bottom shelf. There are 12 books on th

kobusy [5.1K]

Answer: b.14

Step-by-step explanation:

We have two shelves, the top shelf $s_{t}$ and the bottom shelf $s_{b}$ .

Now, firstly we are told the top shelf has 10 more than 1/3 the number of books on the bottom shelf. This can be expressed as:

$s_{t}=10+\frac{1}{3}s_{b}$ (1)

Then, we are told there are 12 books on the bottom shelf:

$s_{b}=12$ (2)

Substituting (2) in (1):

$s_{t}=10+\frac{1}{3}(12)$ (3)

$s_{t}=10+\frac{12}{3}$ (4)

$s_{t}=14$ (5) This is the number of books on the top shelf

Hence, the correct option is b.

6 0

3 years ago

the first term of an arthimetic sequence is 42 the rule an= an-1 +8 can 1 can be used explain how to write explict rules

Svet_ta [14]

Answer:

34 + 8n

Step-by-step explanation:

a₁ = 42

$a_{n} = a_{n-1} + 8$

a₂ = a₁ + 8 = 42 + 8 = 50

a₃ = a₂ + 8 = 50 + 8 = 58

a₄ = a₃ + 8 = 58 + 8 = 66

Arithmetic sequence: 42, 50 , 58 , 66, ......

a₁ = 42 ; d = 8

$a_{n}$ = a₁ + d(n-1)

= 42 + 8(n - 1)

= 42 + 8n - 8

= 34 + 8n

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2 years ago

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omeli [17]

Answer:

add 3 to they coordinate

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3 years ago

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How do you solve -3x+d=-9

zhuklara [117]

Step 1: Add 3x to both sides.d−3x+3x=−9+3xd=3x−9 = ANSWER

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3 years ago