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3 years ago

Triangles A and B are right-angled.

Mathematics

2 answers:

Ostrovityanka [42]3 years ago

8 0

I believe the answer is D

kirill [66]3 years ago

6 0

Step-by-step explanation:

for a) on the base of both of the triangle are the same and both of the triangles are right angle and for b) it is because both triangles are SAS (side angle side)

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two numbered 1 to 6 dice are thrown together and their scores are added. the probability that the sum will be 4 is?

natulia [17]

Answer:

$Pr = \frac{3}{36}$

Step-by-step explanation:

Given

2 number die

Required

P(Sum = 4)

The sample space of 2 die is:

$S = \{(1, 1) (1, 2) (1, 3) (1, 4) (1, 5) (1, 6), (2, 1) (2, 2) (2, 3) (2, 4) (2, 5) (2, 6)$

$(3, 1) (3, 2) (3, 3) (3, 4) (3, 5) (3, 6), (4, 1) (4, 2) (4, 3) (4, 4) (4, 5) (4, 6)$

$(5, 1) (5, 2) (5, 3) (5, 4) (5, 5) (5, 6), (6, 1) (6, 2) (6, 3) (6, 4) (6, 5) (6, 6)$

$n(S)= 36$

The pairs that adds up to 4 are:

$Sum(4) = \{(1,3), (2,2),(3,1)\}$

$n(Sum) =3$

So, the probability is:

$Pr = \frac{n(Sum)}{n(S)}$

$Pr = \frac{3}{36}$

5 0

3 years ago

Alexander says that 3x + 4y is equivalent to (3)(4) + xy because of any order, any grouping. Is he correct why or why not

snow_lady [41]

Answer:

Alexander is incorrect because the expressions are not equivalent.

Step-by-step explanation:

If the expression is evaluated for any value of x, y; the result will not be same.

For instance, let assume x = 1 and y = 2

3x + 4y = 3 + 4 = 7

(3)(4) + xy = (3)(4) + (1 * 2) = 12 + 2 = 14

So, the expressions are not the same and Alexander is incorrect.

3 0

3 years ago

PLEASE HELP ME FAST I'LL MARK BRAINEIST

Leona [35]

Answer:

Part A is 2/9 of the whole

Part B is 7/9 of the whole

5 0

3 years ago

30 POINTS! Tanya has several different ways she likes to walk home. One route takes 20 minutes, two of the routes take 30 minute

andre [41]

Of the 5 routes Tanya can choose from, 2 routes will take 30 minutes. This means that the probability is:

2/5 = 0.4

The answer is 40%.

4 0

3 years ago

Read 2 more answers

Hector had y dollars in his savings account. He made a deposit of twenty-dollar bills and dollar coins. He had four times as man

Mazyrski [523]

Answer:

Y= $240

Step-by-step explanation:

Since he had 60 dollar bills and the dollar coins were 4 times that amount, you just multiply 60 by 4.

5 0

3 years ago