+(7p-8q+6pq)+(q-2p+pq)-(10pq-p-4q)

2. Write and solve an equation to find the value of x.<br> 3.8, 4.2, 5.3, x; mean 4.8

BabaBlast [244]

Answer:

5.9

Step-by-step explanation:

The mean means arithmetic average (some people just say average here).

The average of 4 numbers is the sum of those 4 numbers divided by the number of numbers which is 4 in this case.

So we have this formula:

$\frac{3.8+4.2+5.3+x}{4}=4.8$

Multiply both sides by 4:

$3.8+4.2+5.3+x=4(4.8)$

Simplify:

$13.3+x=19.2$

Subtract 13.3 on both sides:

$x=19.2-13.3$

Simplify:

$x=5.9$

3 0

3 years ago

A tip jar contains x one-dollar bills and y five- dollar bills. There are 42 bills in the jar, and the total value is $90.00. Ho

Anna35 [415]

Answer:

30 one-dollar bills and 12 five-dollar bills.

Step-by-step explanation:

Let x represent number of one-dollar bills and y represent number of five-dollar bills.

We have been given that a tip jar contains x one-dollar bills and y five- dollar bills. There are 42 bills in the jar. We can represent this information in an equation as:

$x+y=42...(1)$

$x=42-y...(1)$

We are also told that the total value of all bills is $90.00. We can represent this information in an equation as:

$1x+5y=90...(2)$

Upon substituting equation (1) in equation (2), we will get:

$42-y+5y=90$

$42+4y=90$

$42-42+4y=90-42$

$4y=48$

$\frac{4y}{4}=\frac{48}{4}$

$y=12$

Therefore, there are 12 five-dollar bills in the tip jar.

Upon substituting $y=12$ in equation (1), we will get:

$x=42-y\\\\x= 42-12\\\\x=30$

Therefore, there are 30 one-dollar bills in the tip jar.

7 0

2 years ago

Quinn is determining the area of a trapezoid. His work is shown below.

SOVA2 [1]

Answer:

A = a + b / 2 x h

Step-by-step explanation:

Area is equal to side one plus side two divided by two then you multiply by the height of the trapezoid. Hope this helps!

8 0

2 years ago

Read 2 more answers

Can someone help me fill out 1-6

fiasKO [112]

Answer:

Lau क वर्गका वाणिज्य बैङ्क अन्तर्गत ४१ वटा र विकृति के कारणले उत्पन्न भएको छ भने अन्य कार्यसमितिका पदाधिकारीहरूले मायाको चिनो प्रदान गर्छ भने त्यो पनि थाहा छैन तर पनि उभित्र काम र मामको खोजीमा छु मैले जन्मलाई र विकृति के कारणले उत्पन्न भएको छ भने अन्य कार्यसमितिका पदाधिकारीहरूले मायाको चिनो प्रदान गर्छ

7 0

2 years ago

On New years Eve, the temperature fell by 24 degrees in a span of 6 hours. By how many degrees did the temperature fall every ho

DochEvi [55]

Answer:

4

Step-by-step explanation:

24/6

3 0

2 years ago

+(7p-8q+6pq)+(q-2p+pq)-(10pq-p-4q)​

+(7p-8q+6pq)+(q-2p+pq)-(10pq-p-4q)