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3 years ago

I already did the first one but i need help please this is my finals math quiz for my grade

Mathematics

1 answer:

anyanavicka [17]3 years ago

6 0

Answer:

b. true c. false d. true

Step-by-step explanation:

b. when it is simplified both will be the same -9h-4.5

c. when it is simplified -28-42 and other is 28-42 so it is false

d. when it is simplified the result is both 6m+3

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Which phrase represents this expression? (30 - 10) × 5

MA_775_DIABLO [31]

Answer:

100

Step-by-step explanation:

Equations in parentheses get solved first: 30-10=20 and 20x5=100

8 0

2 years ago

in quadrilateral ABCD, AE=x+10, and BE=3x-18. for what value of x is ABCD a rectangle? a.24 b.14 c.18 d.16

Evgen [1.6K]

Answer:

for x = 14, the given ABCD is a RECTANGLE.

Step-by-step explanation:

Given : ABCD is a quadrilateral.

E is the intersection points of the diagonal AC and BD.

AE = x+10, and BE= 3x -18

Now, as we know:

IN A RECTANGLES , DIAGONALS BISECT EACH OTHER.

⇒ E is the mid point of AC and BD respectively.

⇒ AE = BE

⇒ x+10 = 3 x - 18

or, 10 + 18 = 3 x - x

or, 2 x = 28

or, x = 28/2 = 14 ⇒ x = 14

Hence, for x = 14, the given ABCD is a RECTANGLE.

4 0

3 years ago

Numbers 100 to 125 are written on separate slips (one number on one slip), kept in a box and mixed well. One slip is chosen from

Wittaler [7]

Step-by-step explanation:

The numbers are given as;

100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125

What is the probability of getting;

a) A number 108?

Probability = Number of favorable outcomes / Total number of outcomes

Number of favourable outcome = 1

Total number of outcomes = 26

Probability = 1 / 26

B) a number less than 107

Probability = Number of favorable outcomes / Total number of outcomes

Number of favourable outcome = 100, 101, 102, 103, 104, 105, 106 = 7

Total number of outcomes = 26

Probability = 7 / 26

c) A number greater than 120

Probability = Number of favorable outcomes / Total number of outcomes

Number of favourable outcome = 121, 122, 123, 124, 125 = 5

Total number of outcomes = 26

Probability = 5 / 26

5 0

3 years ago

Help please ??? Explain ur answe please

earnstyle [38]

38.21$ that is how much more than average

3 0

3 years ago

What is 42653 rounded to the nearest ten

kow [346]

Answer: 42650

Step-by-step explanation:

The tens place is behind the ones place.

The number in the tens place in 42653 is 5.

So to round to the nearest tens you have to change three to 0 because if the number in the ones place is 5 or more, then the number in the tens place would be 1 higher than it used to be while the number in the ones place turns to 0.

However if the number in the ones place is less than 5, then that's the only thing that changes, the ones place would change into a '0.'

Hope that helped!

3 0

3 years ago