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3 years ago

11PLSS NEED HELP.........

Mathematics

1 answer:

igomit [66]3 years ago

3 0

Answer:

diagonal measure(s)

Step-by-step explanation:

Opposite sides are the same length for any parallelogram, as suggested by the line drawing at the upper right of your figure. The figure will be a parallelogram only if the angles are right angles.

You can check to see if the angles are right angles in two ways:

1. see if the diagonal satisfies the Pythagorean theorem. The sides and diagonal will satisfy the Pythagorean theorem only if the corner angle is a right angle. A parallelogram with a right angle is a rectangle.

d² = 30² +72² = 900 +5184 = 6084

d = 78

2. see if the diagonals are the same length. Diagonals of a parallelogram are the same length if and only if the figure is a rectangle.

One or both diagonal measures will tell you if the stakes mark a rectangle.

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I need help do some of the questions for me please

Olin [163]

1. 30

2. 14

3. 6

4. 1

5. 2

6. 7×(x+2)=56

x+2=56/7

x=8-2

x=6

7. 12÷(x-2)=3

x-2=3×12

x-2=36

x=36+2

x=38

8. (7+5)×x=36

12×x=36

x=36÷12

x=3

9. (7-5)×x+3=7

(7-5)×x=7-3

2×x=4

x=4÷2

x=2

10. (8÷2)+(6×2)

=4+12

=16

11. 4×4=16

12. 16÷4=4

3 0

2 years ago

The difference of a number x and 4 is 3

Kruka [31]

"the difference of a number x and 4": x - 4
"is": =
"3": 3

Combine the terms so that it looks like the sentence numerically:

"the difference of a number x and 4 is 3": x - 3 = 4

x - 3 = 4 is your answer.

To solve for x:

Note the equal sign, what you do to one side, you do to the other. Isolate the variable, x. Add 3 to both sides.

x - 3 = 4

x -3 (-3) = 4 (-3)

x = 4 - 3

x = 1

1 is your answer for x.

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6 0

4 years ago

Help me please

Nimfa-mama [501]

They are both in standard form.

7 0

3 years ago

Melons cost $20 pet Crate, and apples cost $8 per create. an order comes in for a total of 48 crates for $420. what was the numb

Alika [10]

Answer:

The number of melon was 3 and the number of apples was 45.

Step-by-step explanation:

1. Melons cost $20 per crate and apples cost $8 per create. If the total was 48 crates for $420, you can make the following system of equations, where $x$ is the number of melons and $y$ is the number of apples:

$\left \{ {{x+y=48} \atop {20x+8y=420}} \right.$

2. By applying the Method of substitution, you can solve for $y$ in the first equation and substitute it into the second one to find $x$ . Then, you can substitute the value of $x$ into the first equation to find $y$ :

$y=48-x$

$20x+8(48-x)=420\\20x+384-8x=420\\12x=36\\x=3$

$3+y=48\\y=45$

4 0

4 years ago

Find x.................

Mkey [24]

Two the smaller right angled triangles are similar. Therefore:
$\dfrac{x}{3}=\dfrac{3}{2}\ \ \ |\cdot3\\\\x=\dfrac{9}{2}\\\\\boxed{x=4.5}$

Answer: a) 4.5

8 0

3 years ago