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Jet001 [13]
3 years ago
11

Can someone help me with the math problem -3/7+(-9)=

Mathematics
1 answer:
lorasvet [3.4K]3 years ago
3 0

Answer:

−66/7(Decimal: -9.428571)

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Plz help me well mark brainliest if correct!.,
AlekseyPX

Answer: The perimeter is 20 cm

Step-by-step explanation: The top and bottom are same length, so 6+6, and the sides are the same length, so 4+4 don’t forget it’s cm and it becomes 20 cm.

PERIMITER = ADDING ALL SIDES

AREA = MULTIPLYING

6 0
3 years ago
Just want to double check does that look right to y’all or is it another answer ? Please help !!!!!
yaroslaw [1]

Answer:

Yes looks right

Step-by-step explanation:

5 0
3 years ago
Solve the system using substitution. Show all work.<br> ( 4х + 5y = 7<br> у = 3х + 9
Lina20 [59]

Answer:

(4x+5y=7

y=3x+9

4x+5(3x+9)=7

4x+15x+45=7

19x=7-45

19x= -38

19×/19=-38/19

x= -2

whlie y=3x+9

y=3(-2)+9

y= -6+9

y=3 end solution

x= -2,y= 3

3 0
2 years ago
Sam and Harry are family. Sam is currently is three times Harry's age. Sam's age is also 10 more than twice Henry's age. What ar
kramer

Answer:

<em>Sam is 30 years old, and Harry is 10 years old.</em>

Step-by-step explanation:

Let us assume that the age of Sam is x and the age of Harry is y.

Sam is currently is three times Harry's age.

So, x=3y  ----------------------1

Sam's age is also 10 more than twice Harry's age.

so, x=2y+10  ---------------2

Subtracting 2 from 1, we get

\Rightarrow x-x=3y-2y-10

\Rightarrow 0=y-10

\Rightarrow y=10

putting this in equation 1,

x=3(10)=30

Therefore, Sam is 30 years old, and Harry is 10 years old.

6 0
3 years ago
Read 2 more answers
Which of the following is the solution to the equation x + 8.6 = 36.2?
zalisa [80]
We have that
<span>x + 8.6 = 36.2
step 1

</span><span>Subtract 8.6 both members
</span><span>x+8.6-8.6=36.2-8.6
x=27.6

the answer is
the solution is x=27.6

</span>
3 0
3 years ago
Read 2 more answers
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