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
Dafna1 [17]
3 years ago
10

What is a-7=21 it’s for class obviously

Mathematics
2 answers:
arlik [135]3 years ago
8 0

Answer:

28

Step-by-step explanation:

7+21=28

a-7=21

Keith_Richards [23]3 years ago
8 0

Answer: a=28

Step-by-step explanation:

You might be interested in
Jill planted two flowers in her garden. The first flower is 2 inches tall, and it is growing 2.25 inches each week. The second p
Nadya [2.5K]

Answer:it will take the two plants 6 weeks before the heights are the same

Step-by-step explanation:

Jill planted two flowers in her garden.

The first flower is 2 inches tall, and it is growing 2.25 inches each week. Since the growth rate is in an arithmetic progression, we will apply the formula for finding the nth term of the series

Tn = a + (n - 1)d

Tn = the nth height of the first flower

a = the initial height of the first flower

d = the common difference in height of the first flower weekly

n = number of weeks

From the information given,

For the first flower,

a = 2

d = 2.25

Tn ?

n ?

Tn = 2 + (n - 1)2.25

For the second flower,

a = 5.75

d = 1.5

Tn ?

n ?

Tn = 5.75 + (n - 1)1.5

To determine the number of weeks that it will take until the two plants are the same height, we would equate Tn for both flowers. It becomes

2 + (n - 1)2.25 = 5.75 + (n - 1)1.5

2 + 2.25n - 2.25 = 5.75 + 1.5n - 1.5

Collecting like terms

2.25n - 1.5n = 5.75 - 1.5 - 2 + 2.25

0.75n = 4.5

n = 4.5/0.75

n = 6 weeks

4 0
3 years ago
Elise said that 0.2 equals 2. Use words and numbers to explain her mistake.
fenix001 [56]

Answer:

Step-by-step explanation: 0.2 of 2/10 and 2 is a whole number.

4 0
3 years ago
NEED HELP AGAIN ASAP! MATH PEOPLE ONLY. WILL GIVE BRAINLIEST, TON OF POINTS ONLY FOR THE RIGHT ANSWER.
Hoochie [10]
It seems it moves 18 degrees per second on the y axis
5 0
3 years ago
An ant travels at a constant rate of 30 cm every 2 minutes at what pace does the ant travel per centimeter
Rama09 [41]

Answer:

Answer: 15 cm in one minute. Step-by-step explanation: If the ant travels at 30 cm every two minutes, then divide both numbers by two to get the unit rate, which is 15 I'm per minute

6 0
3 years ago
ΔABC is translated 6 units up and 3 units left to create ΔA′B′C′. If vertex A is located at (-1, 2), what are the coordinates of
kramer
Base in your question the triangle ABC is a triangle that is translated 6 units up and 3 units left and create a new triangle A'B'C'. So if a vertex A is located at a point of (-1,2) the possible coordinates of A' is (-4, 8) and i hope you are satisfied with my answer
8 0
3 years ago
Read 2 more answers
Other questions:
  • Xavier and Ava are employees for a company. Xavier is making a salary of $42,700.
    9·1 answer
  • In triangle FGH, the measure of angle F=42 and an exterior angle at vertex H has a measure of 104. what is the measure of angle
    11·1 answer
  • 5 x 7/10= the product lies between ____ and ___.
    6·2 answers
  • In the problem · N = 1, N must be _____.
    6·2 answers
  • Which graph is correct
    13·1 answer
  • Estimate the value of 98.5 x 13<br><br> And<br><br> 102.3 divided by 4.7
    9·2 answers
  • Please help me find the perimeter of the three shapes please . Thank you soooooooo much guys
    15·2 answers
  • Pls help me........
    11·1 answer
  • Micah is at a donut shop and wants to choose his own dozen. There are ample glazed,
    13·1 answer
  • A company is considering two different prize policies for a sweepstakes. In Policy A, the cost to enter is $5. and the overall w
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!