1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Step2247 [10]
3 years ago
9

Solve for a. 7a + 18 = 102 a =

Mathematics
1 answer:
Ostrovityanka [42]3 years ago
6 0

Answer:

a=12

Step-by-step explanation:

7a+18=102

first, subtract 18 FROM BOTH SIDES!

then you get 7a=84.

next, divide BOTH SIDES by 7

and you get a =12 :)

You might be interested in
Solve this
sesenic [268]

A sandwich store charges a delivery fee to bring lunch to an office.

Delivery cost - D

Meatball sandwich cost  - M

One office pays $40.50 for 5 meatball sandwiches.

40.50 = 5M + D

Another office pays $66.50 for 9 meat ball sandwiches

66.50 = 9M + D

A. How much does each meatball sandwich add to the cost of delivery?

D = 40.50 - 5M = 66.50 - 9M

40.50 - 5M = 66.50 - 9M

9M - 5M = 66.50 - 40.50

4M = 26.00

M = 6.50

B. What is the delivery fee

D = 40.50 - 5M = 40.50 - 5(6.50) = 40.50 - 32.50 = 8.00

Check

66.50 = 9M + D = 9(6.50) + 8 = 58.50 + 8.00 = 66.50

3 0
3 years ago
What is the expected average of rolling a single die
larisa86 [58]

Answer:

Mathwords: Expected Value. A quantity equal to the average result of an experiment after a large number of trials. For example, if a fair 6-sided die is rolled, the expected value of the number rolled is 3.5. This is a correct interpretation even though it is impossible to roll a 3.5 on a 6-sided die.

Step-by-step explanation:

hope it helps

5 0
3 years ago
Read 2 more answers
The high temperature one day was 30°F. Then
expeople1 [14]
Yes because when you subtract a number, you can also say that you added a negative. So if it dropped 23 degrees, then you also added -23 degrees
5 0
3 years ago
Standard normal curve between z=.42 and z=1.92<br> a= .6902<br> b= .3098<br> c= .1902<br> d= .8098
soldier1979 [14.2K]
The correct answer is Choice B: 0.3098.

To find the answer, you have to use a normal distribution table. Look up the percents for each z-score and subtract them to find the region between.

z = 1.92 the percent is 0.9726

z = 0.42 the percent is 0.6628

0.9726 - 0.6628 = 0.3098
4 0
3 years ago
4 cousins share 3 pies
AysviL [449]

Answer:

1.33

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Other questions:
  • I really need help on this question!!!ASAP!!!(Feel free to show your work :)​
    7·1 answer
  • Write a quadratic function in standard form with zeros 5 and 6
    11·1 answer
  • Solve the triangle<br> Solve sides
    6·1 answer
  • What is Prime factorization of 153
    8·2 answers
  • D(1) = 1.<br> d(n) = n.d(n-1), for n &gt; 2
    9·2 answers
  • I'm confused can someone please help?
    5·1 answer
  • What is 12x1,234+55 divided by 6
    8·2 answers
  • Evaluate the polynomial 6x - y, for x = -3 and y = 2.<br><br>a) -20<br>b) 4<br>c) -16<br>d) 15​
    8·1 answer
  • Goran makes 8 dollars for each hour of work. Write an equation to represent his total pay p after working h hours.
    6·1 answer
  • Solve for I.<br> 5x- 19 &lt;=1<br> OR<br> - 4x+3&lt;-6
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!