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
spayn [35]
2 years ago
11

Hey I need help with please show your work Thank you.

Mathematics
2 answers:
cupoosta [38]2 years ago
6 0
Not my work but I did give you the answer, have a nice day!

nata0808 [166]2 years ago
4 0

Answer:

315

Step-by-step explanation:

→ Substitute the first equation into the second

a + 21a = 330

→ Simplify

22a = 330

→ Solve for a

a = 15

→ Multiply answer by 21

15 × 21 = 315

You might be interested in
Is 3/5 proportional
romanna [79]

Answer:

yes because 3/5 is a terminating fraction which means it isnt forever

8 0
4 years ago
Plz i need this asap, if you do not know all of them, plz do not answer
Lelechka [254]
1. sqrt 52 = 7.211 rounds to 7

2. irrational number

3. sqrt 441 = 21....rational

4. 12^2 + 3^2 = h^2
    144 + 9 = h^2
     153 = h^2
      sqrt 153 = h
      12.4 = h <===

5. 6^2 + b^2 = 18^2
    36 + b^2 = 324
    b^2 = 324 - 36
    b^2 = 288
    b = sqrt 288
    b = 16.97 rounds to 17 <==

6. 39^2 + 52^2 = c^2
    1521 + 2704 = c^2
    4225 = c^2
    sqrt 4225 = c
    65 = c
    (39 + 52) - 65 = 91 - 65 = 26 miles shorter <==

7. 4^2 + b^2 = 16^2
     16 + b^2 = 256
     b^2 = 256 - 16
     b^2 = 240
     b = sqrt 240
     b = 15.49 rounds to 15.5 <==

8. ?
8 0
4 years ago
Find the surface area of the pyramid.
oee [108]

Answer:

36

Step-by-step explanation:

4 0
3 years ago
Need help ASAP!! I'll give brainliest to correct answer!!!
erastovalidia [21]

Step-by-step explanation:

so...the answer is C.27.7m

4 0
4 years ago
Read 2 more answers
Evaluate -(2^6)(2^3)
valina [46]

Answer:

- (2^9)

Step-by-step explanation:

-(2^6)(2^3)

We know a^b * a^c = a^( b+c)

- ( 2 ^ (6+3))

- (2^9)

7 0
4 years ago
Other questions:
  • Ask Your Teacher (a) What is the difference between a sequence and a series? A sequence is an unordered list of numbers whereas
    12·1 answer
  • Will mark brainlyist
    9·1 answer
  • Eli needs pieces of ribbon cut into strips that are 2 1/2 feet long. The roll of ribbon is 7 1/2 feet long. Which expression cou
    8·1 answer
  • A quick simply Economics question.
    7·1 answer
  • 5 (b + 2) + 2b - 12 + b
    14·2 answers
  • Which of the following polynomials has solution that are real numbers ?
    12·1 answer
  • 2) Escribir en lenguaje simbólico y resolver. Recordamos la definición de
    10·1 answer
  • If x¹=xcosA+ysinA and y¹=xsinA-ycosA, show that (x¹)²+(y¹)²=x²+y²​
    10·1 answer
  • BRAINLIEST FOR CORRECT ANSWER, IM FAILING SCHOOL AND NEED HELP ASAP. EVEN OFFICIAL HELP COUNTS
    10·1 answer
  • Can someone help me answer this
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!