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
ioda
2 years ago
11

I need help ‼️ #10, #11 & #13.

Mathematics
1 answer:
Cerrena [4.2K]2 years ago
7 0

Answer: 10 : t = 16   11 : x = -8   13 : x = 0

Step-by-step explanation: Im sure about 10 and 11 but not too sure about 13 and explanations are too hard for me to explain

You might be interested in
The sum of all three numbers is 12. The sum of twice the first number, 4 times the second number, and 5 times the third number i
grigory [225]

Answer:

The numbers are 7, 4 and 1

Step-by-step explanation:

Let the numbers =x, y, z.

The sum of all three numbers is 12, x+y+z=12--------i

The sum of twice the first number, 4 times the second number, and 5 times the third number is 35, 2x+4y+5z=35-------ii

The difference between 8 times the first number and the second number is 52, 8x-y=52---------iii

Now, from (i),z =1-x-y--------iv

substitute (iv) in (ii),

2x+4y+5(12-x-y)=35

2x+4y+60-5x-5y=35

collect like terms

-3x-y=-25

that is, 3x-y=25--------v

solving (iii) and (v) simultaneously (add iii and v), we have

11x=77

divide both sides by 11 to obtain x=7

Put x=7 in (v)

3(7)+y=25

21+y=25

implies y=25-21=4

put x=7 and y=4 in (iv)

z=12-7-4=1

Hence, the numbers are 7, 4 and 1.

5 0
3 years ago
Please help me with my HW
pentagon [3]
So you can scan it here and it will give you the sotoiun and answers just make sure u show ur workkk good luck
4 0
2 years ago
Read 2 more answers
Hi can anybody explain to me how to do this I'm kinda confused . 5×[5(-7)]​
telo118 [61]

Answer:

5 × [5(-7)]

= 5 × (-35)   ---- 5 × (-7) = -35

= -175

4 0
3 years ago
The difference of twice a number and 4 is 16 .
german

Answer:

Let X be the number.

Twice the number would be 2x

The difference between the two, would be subtraction, so you would subtract 4 from 2x


The equation becomes 2x-4 = 16


Now solve for x:

2x-4 = 16

Add 4 to each side:

2x = 20

Divide both sides by 2:

x = 20/2

x = 10


The number is 10.


7 0
3 years ago
Read 2 more answers
During a guided tour of Sindrow Castle, a group of tourists climbed to the top of Fineview Tower.
Finger [1]

Answer:

C

Step-by-step explanation:

7 0
2 years ago
Other questions:
  • Marcus has 731 books. He puts about the same number of books on each of 9 shelves in his bookcase. About how many books are on e
    10·1 answer
  • If two opposite sides of a square are increased by 15 meters and the other sides are decreased by 5 meters, the area of the rect
    15·1 answer
  • Which measure of central tendency is MOST EASILY affected by outliers
    15·1 answer
  • PLEAS HELP ME :) (Above)
    9·2 answers
  • What does it mean to say there is an association between characteristics in a two-way frequency table?
    9·1 answer
  • Which expression is equivalent to C^2-4/c+3 divided by c+2/3(c^2-9)
    14·1 answer
  • PLEASE ANSWER THIS QUESTION. WILL GIVE YOU THE BRAINIEST IF CORRECT.
    13·1 answer
  • Rebekah has $400 to spend on a video game system and games. The system cost $289.99 and each game costs $32.29. How many games c
    8·2 answers
  • Mr. Zhou surveyed his 25 students to find out how much time they spent doing homework each week. The results of his survey are s
    13·2 answers
  • And he runs the same number of miles ask every day. His total distance run for one week is less than 60 miles. Which any quality
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!