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kobusy [5.1K]
2 years ago
6

Please help me I don't get it 7 1/5−(−3/5)

Mathematics
1 answer:
Fudgin [204]2 years ago
8 0

Answer:

39/5

Step-by-step explanation:

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What is the perimeter of the parallelogram shown below?A.11 cmB.22 cmC.24 cmD.64 ​
erma4kov [3.2K]

Answer:

B.  22 cm

Step-by-step explanation:

Perimeter of a parallelogram is 2(l+w)

= 2(8+3)

=2(11)

=22cm

6 0
3 years ago
8. The sum of two numbers is 8 less than twice the first number. Their difference is 4 less than twice
Delicious77 [7]

Answer:

14 and 6

Step-by-step explanation:

Let's start by naming the first number x.

We can name the second number y.

We can set up equations to model our situation.

x+y=2x-8

x-y=2y-4

Let's simplify the equations.

x+y=2x-8

Subtract 2x from both sides

-x+y=-8

__________

x-y=2y-4

Subtract 2y from both sides.

x-3y=-4

Add the two equations together to eliminate x.

x-3y=-4

-x+y=-8

________

0x-2y=-12

-2y=-12

Divide both sides by -2.

y=6

The second number is 6.

Plug that back in.

x+6=2x-8

Subtract x from both sides

6=x-8

Add 8 to both sides

x=14

The first number is 14

7 0
3 years ago
In a right triangle, the measure of one acute angle is twice the sum of the measure of the other acute angle and 30. Find the me
Alja [10]

Answer:

Step-by-step explanation:

if we have a right triangle,

one angle=90

180-90=90

let x be one angle, and y another angle

the other is 2x+30

x+2x+30=90

3x=60

x=20

y=70

5 0
2 years ago
Read 2 more answers
You have $60 and your sister has $120. You are saving $14 per week and your sister is saving $10 per week. How long will it be b
tigry1 [53]

Answer:

15 weeks

The amount of money is  270

Step-by-step explanation:

You: 60 +14x

Sister: 120+10x

Set them equal to each other

60+14x = 120+10x

Subtract 10x from each side

60+4x= 120

Subtract 60 from each side

4x= 60

Divide by 4

4x/4 = 60/4

x = 15

15 weeks

The amount of money is 120+10*15 = 120+150 = 270

3 0
3 years ago
Read 2 more answers
A = kr²<br><br>choices:<br>direct<br>inverse<br>joint<br>combined<br>​
Lina20 [59]

Answer:

Direct.

Step-by-step explanation:

A varies directly as the square of r.

6 0
3 years ago
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