3 years ago

The probability that a student correctly answers on the first try (the event

Mathematics

1 answer:

Lynna [10]3 years ago

6 0

Check attached file for solution.

You might be interested in

X÷ 5+1 = 11 X = What does X =

Serjik [45]

Answer:

x = 2

Step-by-step explanation:

x/5 + 1 = 11
x/5 = 10
x = 50

7 0

2 years ago

A ball is thrown from a height of 40 meters with an initial downward velocity of 5 m/s

arsen [322]

0=40-10t-5t^2

t^2+2t-8=0

(t+4)(t-2)=0

t=-4 (not a solution) or t=2

Answer: after 2 seconds

7 0

3 years ago

X + y = 152, 8.5x + 12y = 1,656 How many hats were sold?

Elodia [21]

Answer:

x = 48 and y = 104

Step-by-step explanation:

Given equations are:

$x+y = 152\\8.5x+12y=1656$

From equation 1:

$x = 152-y$

Putting the value of y in equation 2

$8.5(152-y)+12y = 1656\\1292-8.5y+12y = 1656\\3.5y+1292 = 1656\\3.5y = 1656-1292\\3.5y = 364\\\frac{3.5y}{3.5} = \frac{364}{3.5}\\y = 104$

Now we have to put the value of y in one of the equation to find the value of x

Putting y = 104 in the first equation

$x+y = 152\\x+ 104 = 152\\x = 152-104\\x = 48$

Hence,

The solution of the system of equations is x = 48 and y = 104

The value of variable which was assumed for number of hats, is the total number of hats.

6 0

3 years ago

What is the absolute change of 12.1 inches to 7.8 inches?

Troyanec [42]

Answer:

4.3

Step-by-step explanation:

12.1-7.8= 4.3

Hope this helps! :) Is correct pls mark brainliest!

3 0

2 years ago

Read 2 more answers

Guys help me can u give me the answer

andrezito [222]

Answer:

A factor, in mathematics, a number or algebraic expression that divides another number or expression evenly, with no remainder. A multiple of a number is any integer multiplied by the number. Try it yourself, now you know the how it works.

3 0

2 years ago