3 years ago

Please help me with this

Mathematics

1 answer:

ddd [48]3 years ago

7 0

Answer:

C. A square is a rhombus

Step-by-step explanation:

A square fulfills all the requirements to become a rhombus:

A. All sides being equal.

B. The diagonals bisected at an angle of 90 degrees

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What is the solution of the system of equations?<br><br> {3x−1/2y=−7/2 x+2y=1

k0ka [10]

3x -1/2y = -7/2
x = -2y + 1

3 (-2y + 1) -1/2y = -7/2
-6y +3 -1/2y = -7/2
-13/2y = -13/2
y = 1

x = -2(1) + 1
x = -1

Answer = (-1, 1)

4 0

3 years ago

The length of a rectangle is 4 less than twice the width. The perimeter of the rectangle is 106 cm. Determine the length of the

horsena [70]

Answer:

Length = 34

Step-by-step explanation:

Perimeter of rectangle = a+a+b+b = 2(a+b)

Let a = length = 2b - 4

Let b = width

Therefore

(2b-4) + (2b-4) + b + b = 106 cm

Bracket off

2b-4+2b-4+b+b = 106cm

Collect like terms

2b+2b+b+b-4-4 = 106cm

6b-8 = 106

6b = 106+8

6b = 114

b = 114÷6

b = 19

To get a

2b - 4

2(19) - 4

38-4

= 34

4 0

3 years ago

Nine more than the quotient of b and 4

erma4kov [3.2K]

Answer:

b/4+9

Step-by-step explanation:

4 0

3 years ago

Help in 5 plz I will give brainlist

elena-14-01-66 [18.8K]

M=14.6 (is rounded to the nearest tenth.)

8 0

3 years ago

Use the Quadratic Formula to solve the equation. (Enter your answers as a comma-separated list.) 13x^2 +1 = -10

12345 [234]

Step-by-step explanation:

The given quadratic equation is :

$13x^2 +1 = -10x\\\\or\\\\13x^2+10x+1=0$

The formula to solve a quadratic equation is :

$x=\dfrac{-b\pm \sqrt{b^2-4ac} }{2a}$

Put a = 13, b = 10 and c = 1

So,

$x=\dfrac{-10\pm \sqrt{10^2-4(13)(1)} }{2(13)}\\\\x=-0.118, -0.651$

Hence, this is the required solution.

3 0

3 years ago

Please help me with this​

Please help me with this