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2 years ago

Need help...!!ASAP..!! plz....

Mathematics

2 answers:

katen-ka-za [31]2 years ago

3 0

the answer for this is A

solong [7]2 years ago

3 0

Answer:

Correct option is A

Step-by-step explanation:

3x - 7

Three times a number x minus 7

The difference of there times a number and 7

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Elaine has a desktop that is 4.5 feet by 5.5 feet, and she is going to cover it with patches of wallpaper that each measure 18 i

I am Lyosha [343]

first transform feet into inches 4.5 feet = 48.5 inches; 5.5 feet = 60.5 inches;

then get the area in inches : 48.5 x 60.5 = 2934.25 inches; the area of one patch is 18 x 24 = 432 inches

so now divide the area of the desktop by the area of one patch

2934.25 / 432 = 6.7 so she needs 7 patches

7 0

2 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

The US Department of Health and Human Services wants to know whether the national healthcare system is achieving its goals in Vi

Vlad [161]

Answer:

Part. B

bc it was 71%

6 0

2 years ago

Read 2 more answers

the sum of three numbers is twenty. the second number is four times the first and the sum of the first and third is eight. what

8090 [49]

Let's call the three numbers x, y, and z.

The numbers are 3, 12, and 5.
x + y + z = 20
y = 4x
x + z = 8
We can rewrite the first equation because y is 4x, so
x + 4x + z = 20
5x + z = 20
And now we can use simultaneous equation rules to solve

5x + z = 20
x + z = 8

5x + z = 20
5x + 5z = 40
(subtract)
-4z + -20
÷ -4
z = 5

x + z = 8
x + 5 = 8
x = 3

y = 4x
y = 4 × 3
y = 12

I hope this helps!

4 0

3 years ago

Fran bought 4 shirts that were each $13 each. She also bought a pair of socks for 4.29. What was the total amount Fran pair for

agasfer [191]

4x13=52 52+4.29=56.29

8 0

3 years ago