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
Sliva [168]
2 years ago
5

Please help! had to do this test 3 times! ​

Mathematics
1 answer:
Vika [28.1K]2 years ago
4 0

Answer:

B

Step-by-step explanation:

42=2(6+l) \\ \\ 21=6+l \\ \\ l=15

You might be interested in
Melissa drove 715 miles in 11 hours.
s344n2d4d5 [400]

Answer:

455 miles driven in 7hrs

Step-by-step explanation:

715miles divided by 11 hrs= 65 miles per hr

65 miles multiplied by 7 hrs= 455 miles driven in 7hrs

6 0
3 years ago
Which of the following of x and y would make up the following expression represent a real number? (4+5i)(x+yi)
salantis [7]

Answer:

x = 4 and y = - 5

Step-by-step explanation:

note that the product of a complex number and it's conjugate is real

That is

(a + bi)(a - bi) where a, b are real

= a² - abi + abi - b²i²

= a² + b² ← a real number

For (4 + 5i)(x + yi) to be real

we require (x + yi) to be the conjugate of 4 + 5i , that is 4 - 5i

(4 + 5i)(4 - 5i) ⇒ x = 4 and y = - 5



8 0
3 years ago
Can sombody help me??
Maksim231197 [3]

Answer:

D. Both factors are negative, so the product will be positive.

4 0
3 years ago
Read 2 more answers
Determine which of the following formulas hold for all invertible n×n matrices A and B.
garik1379 [7]

Answer:

1 hold

2 hold

3 does not hold

4 hold

5 hold

6 hold

7 does not hold

8 does not hold

9 Does not hold

10 Hold

Step-by-step explanation:

The detailed step by step verification is as shown in the attachment

4 0
4 years ago
Any one know geometry please help me out
MA_775_DIABLO [31]

Answer:

X = 4

Step-by-step explanation:

And then the nearest tenth would be 0

cause all numbers that have 4 round to like 0 or the tenth under it. If it has a five or higher it rounds to 10 or the number above it

7 0
3 years ago
Read 2 more answers
Other questions:
  • Helllppppppppppppppppp
    9·1 answer
  • 4/18 is closest to: 1/2 or 1 whole
    8·2 answers
  • Franklin rode his bike 6 5/6 miles on Tuesday. He also rode his bike 5 5/6 miles on Thursday. What is the difference between the
    10·1 answer
  • Simplify by combining like terms: 5x + 3x + 10x
    11·2 answers
  • Solve this answer for me and explain it e/2<-0.5
    9·1 answer
  • If today you can buy more Euros with $100 CAD than yesterday has the euro increased or decreased in value against the CAD?
    14·1 answer
  • Ms. Carey grades 4 tests during her lunch. She grades 1/3 of the remainder after school. If she syill5has 16 test to grade after
    12·1 answer
  • 8/11 x (5/9 - 1/6) ÷ 1 5/9​
    10·1 answer
  • Please help with this question.
    10·1 answer
  • The size of a computer class is limited to fifteen people. If three seats are still available, to what percent of its capacity i
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!