4 years ago

Need quick help please???

Mathematics

1 answer:

laila [671]4 years ago

4 0

B. because y is already solved

You might be interested in

f. A fair coin is thrown in the air four times. If the coin lands with the head up on the first three tosses, what is the probab

vladimir2022 [97]

Answer:

D. 1/2

Step-by-step explanation:

Coin tosses are independent. Past results don't affect future probabilities. So the probability of getting heads on the fourth toss is still 1/2.

7 0

3 years ago

Read 2 more answers

A right triangle and some of its measurements are shown in this diagram.

Daniel [21]

Answer:

it's an right angle triangle

4 0

3 years ago

Read 2 more answers

A grocery store chain uses loyalty cards that offer discounts on sale attheir store. The probability that a randomly chosen shop

Ghella [55]

The answer is a cause

4 0

3 years ago

The answer to the question

RoseWind [281]

Answer:

Step-by-step explanation:

7 0

3 years ago

Two mechanics worked on a car. The first mechanic charged $65 per hour, and the second mechanic charged $90 per hour. The mechan

Katena32 [7]

Answer:

First mechanic worked 20 hours and second mechanic worked 5 hours

Step-by-step explanation:

Let the number of hours the first mechanic worked = $a$

Let the number of hours the second mechanic worked = $b$

Therefore, we can write 2 equations and then solve them simultaneously:

$a+b=25$

$65a+90b=1750$

Rearranging the first equation: $a=25-b$

and substituting into the second equation to find $b$ :

$65(25-b)+90b=1750$

$1625-65b+90b=1750\\
25b=125\\
b=5$

Now sub $b=5$ into the first equation to find $a$

$a+5=25\\
a=20$

Therefore, first mechanic (a) worked 20 hours and second mechanic (b) worked 5 hours

4 0

2 years ago