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
stellarik [79]
3 years ago
11

Please help thank you.

Mathematics
1 answer:
tia_tia [17]3 years ago
5 0
Question 1:

The answer is the second choice.

Parallelograms that are not rectangles do not have congruent diagonals; however, all rectangles do have congruent diagonals.

A rhombus has perpendicular diagonals but is not a rectangle, so the first choice is wrong

A rhombus has all congruent sides but is not a rectangle, so the third choice is wrong.

The last choice only applies to certain quadrilaterals, none of which are rectangles.

Question 2:

The first choice is the answer.

A rectangle has congruent diagonals, but is not a square. We can eliminate the second choice.

A rhombus has all congruent sides, but it is not a square.

The last choice only applies to certain quadrilaterals, none of which are squares.

Have an awesome day! :)
You might be interested in
Solve for (x) <br> I need help with 10(b) <br> Please
Shalnov [3]

Answer:

x = 4

Step-by-step explanation:

(b)

\frac{2x+1}{3} = 5 - \frac{1}{2} x

Multiply through by 6 ( the LCM of 3 and 2 ) to clear the fractions

2(2x + 1) = 30 - 3x , distribute parenthesis on left side

4x + 2 = 30 - 3x ( add 3x to both sides )

7x + 2 = 30 ( subtract 2 from both sides )

7x = 28 ( divide both sides by 7 )

x = 4

3 0
3 years ago
What's the slope for (-5,9) (7,3)
FrozenT [24]

Answer: -1/2

Step-by-step explanation:

3 0
3 years ago
Can someone please help me! Big ideas 8.4 number 20
Harlamova29_29 [7]

<u>Answer:</u> The perimeter is about 20.26 units

<u>Step-by-step explanation:</u>

To calculate the distance between the points, we use the formula:

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

where,

d = distance

x_2\text{ and }x_1 are the coordinates of the points on x-axis

y_2\text{ and }y_1 are the coordinates of the points on y-axis

For the given points:

B(0,3), C(4,-1), E(2,-3) and F(-2,1)

  • Calculating the distance BC:

x_2=4\\x_1=0\\y_2=-1\\y_1=3

Putting values in above equation, we get:

BC=\sqrt{(4-(0))^2+(-1-3)^2}\\\\d=\sqrt{16+16}=5.66units

  • Calculating the distance CE:

x_2=2\\x_1=4\\y_2=-3\\y_1=-1

Putting values in above equation, we get:

CE=\sqrt{(2-(4))^2+(-3-(-1))^2}\\\\d=\sqrt{36+4}=4.47units

To calculate the perimeter of a rectangle, we use the equation:

Perimeter=2(l+b) ....(1)

where,

l = length of the rectangle = BC = 5.66 units

b = breadth of the rectangle = CE = 4.47 units

Putting values in equation 1, we get:

Perimeter=2(5.66+4.47)\\\\Perimeter=20.26 units

Hence, the perimeter is about 20.26 units

7 0
3 years ago
Donnie is solving the equation 2x^2=27+3x with the quadratic formula. What values should he use for a , b , and c? A. a=2 b=27 c
OLga [1]
Your answer is D. a = 2, b = -3, c = -27.
This is because to use the quadratic formula, your equation needs to equal 0, and to do that, you need to subtract 27 and 3x from the right to get 2x² - 3x - 27 = 0, and since the -3 is the x value, we use it for b.

I hope this helps!
3 0
3 years ago
Read 2 more answers
Explain how you could use 25% of a number to find the number
Elenna [48]

Answer:

you know 25% is one fourth of 100%, aka the whole number, so just multiply the 25% of the number times 4 to get the whole number

5 0
4 years ago
Other questions:
  • In a election, there are a total of 80,000 voters and there are two candidates, X and Y. Only 80% of the voters go for polls to
    9·1 answer
  • Find the area of this triangle pls help
    9·2 answers
  • It takes Marty 1 1/4 hours to get ready for school. If 1/5 of that time is used to shower and 1/3 of that time is used to eat br
    12·2 answers
  • Sean is a bookworm. On average, he reads pages in minutes.
    12·1 answer
  • mike gioulis would like to have $25,000 in 4 years to pay off a balloon payment on his business mortgage. His money market accou
    10·1 answer
  • Enc is working as an insurance salesperson. He earns a base salary and a commission on each new policy
    5·2 answers
  • A bird was perched on a tree at a height of 19 feet. The bird then saw food on a branch below and dropped down 7 1/2 feet. What
    13·2 answers
  • Y=x+1<br> y=x^2-1<br><br> please help i don't understand
    11·1 answer
  • What is the double of a hundred?
    7·2 answers
  • What is the surface area of this triangular pyramid the height is 4 the base and width is 4 and the bottom back line is 4 and th
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!