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3 years ago

HELPPP!!! find the value of each expression then answer the questions.

Mathematics

1 answer:

guapka [62]3 years ago

7 0

1
-1
2
-2
3 hope it’s right

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haley puts these 12 tiles in a bag and shakes the bag.Then she picks a tile at random.What is the probability she picks a tile t

kirill [66]

Answer:

1 in 3 chance

Step-by-step explanation:

Multiples of 3: 3, 6, 9, 12

This means there are 4 multiples.

4/12 or 4 ÷ 12 = 1/3

So there is a 1 in 3 chance (33.333%) to get a multiple of 3

6 0

3 years ago

Matt went scuba diving. He dove to a depth of 48 feet below the surface. Elena dove one-fourth as deep as Matt. What number desc

taurus [48]

Answer:

12ft

Step-by-step explanation:

1/4 of 48

= 1/4 * 48

= 12ft

Feel free to mark this as brainliest! :D

4 0

3 years ago

Alex and Bryan are giving an exam. The probability Alex gets an A is 0.9, the probability Bryan gets an A is 0.8 and the probabi

VARVARA [1.3K]

Answer:

The probability that either Alex or Bryan get an A is 0.9

Step-by-step explanation:

Before we proceed to answer, we shall be making some important notation;

Let A = event of Alex getting an A

Let B = event of Bryan getting an A

From the question, P(A) = 0.9, P(B) = 0.8 and P(A ∩ $B^{c}$ ) = 0.1

We are to calculate the probability that either Alex or Bryan get an A which can be represented as P(A ∪ B)

We can use the addition theorem here;

P(A ∪ B) = P(A) + P(B) - P(A ∩ B) .......................(i)

Also,

P(A) = P(A ∩ $B^{c}$ ) + P(A ∩ B) .........................(ii)

We can insert ii into i and we have;

P(A ∪ B) = P(A ∩ $B^{c}$ ) + P(A ∩ B) + P(B) - P(A ∩ B) = P(A ∩ $B^{c}$ ) + P(B) = 0.1 + 0.8 = 0.9

5 0

3 years ago

Find the volume of the solid whose base is the circle x^2+y^2=64 and the cross sections perpendicular to the x-axis are triangle

djyliett [7]

1) x² + y² = 64 is the EQUAION of a cercle with a radius R = √64 =8

2) The cross section is a triangle with H = BASE.
Since R = 8 that means the Base B= 16 and also the height H =16
This solid is then a regular cone and its Volume value is
V = πR².H
V π(8)².(16) = 2014π units³ or ≈ 3217 units³

3 0

4 years ago

The two triangles are similar. What is the value of x? Enter your answer in the box. X=

fomenos

Answer:

Step-by-step explanation:

In similar triangles, the corresponding sides are in same proportion.

$\sf \dfrac{4x}{3x+1}=\dfrac{15}{12}$

Cross multiply,

4x*12 = 15*(3x + 1)

48x = 15*3x + 15*1

48x = 45x + 15

48x -45x = 15

3x = 15

x = 15/3

x = 5

8 0

2 years ago