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2 years ago

Which would be the most appropriate way to estimate -6.1(0.22)? Check all that apply.

Mathematics

1 answer:

tatiyna2 years ago

5 0

Use rounding to get -6(0.2), and then multiply.

Use compatible numbers, such as -6(0.5), and then multiply.

Use front-end estimation to get -6(0.2), and then multiply.

Estimate -6.1(0.22)

Answer:

Use rounding to get -6(0.2), and then multiply.

Use front-end estimation to get -6(0.2), and then multiply.

Round the factors to the nearest whole number, and then multiply.

Step-by-step explanation:

Actual answer:

-6.1(0.22) = -1.342

Estimate answer:

-6 (.2) = 1.2

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Janelle buys 4 cases of water. Each case of water contains 12 bottles. Janelle drinks 3 bottles of water. Veronica writes a nume

8_murik_8 [283]

The x4 would have to be in the parentheses while the -3 would have to be on the outside because you are subracting 3 from 48
4 cases of 12 bottled waters is 48 total amount of bottled waters since Veronica drank 3 she has 45 bottled waters left

6 0

3 years ago

Taylor and Layla go to the movie theater and purchase refreshments for their friends.

zhenek [66]

The system of equations that can be used to find the price of one

drink and the price of one bag of popcorn is

4 x + 9 y = 43

2 x + 8 y = 25

The price of a drink is $8.50

Step-by-step explanation:

Taylor and Layla go to the movie theater and purchase refreshments

for their friends

Taylor spends a total of $43.00 on 4 drinks and 9 bags of popcorn
Layla spends a total of $25.00 on 2 drinks and 8 bags of popcorn

We need to write a system of equations that can be used to find the

price of one drink and the price of one bag of popcorn

Assume that the price of each drink is $x and the price of each bag

of popcorn is $y

∵ Taylor spends a total of $43.00 on 4 drinks and 9 bags of popcorn

∴ 4 x + 9 y = 43 ⇒ (1)

∵ Layla spends a total of $25.00 on 2 drinks and 8 bags of popcorn

∴ 2 x + 8 y = 25 ⇒ (2)

The system of equations that can be used to find the price of one

drink and the price of one bag of popcorn is

4 x + 9 y = 43

2 x + 8 y = 25

Multiply equation (2) by -2 to eliminate x

∵ -2(2 x) + -2(8 y) = -2(25)

∴ -4 x - 16 y = -50 ⇒ (3)

- Add equations (1) and (3)

∴ -7 y = -7

- Divide both sides by -7

∴ y = 1

- Substitute y in equation (1) to find x

∵ 4 x + 9(1) = 43

∴ 4 x + 9 = 43

- Subtract 9 from both sides

∴ 4 x = 34

- Divide both sides by 4

∴ x = 8.5

∵ x is the price of each drink

∴ The price of a drink = $8.50

The price of a drink is $8.50

Learn more:

You can learn more about system of equation in brainly.com/question/6075514

#LearnwithBrainly

6 0

2 years ago

Can any one solve this.?

SpyIntel [72]

Answer:

x = 1

Step-by-step explanation:

Expand brackets

2x + 16 - 4x = 10x + 4

Rearrange so that x's are on one side and whole numbers are on the other

2x - 4x - 10x = 4 - 16

Simplify

-12x = -12

Make x on its own

x = 1

3 0

3 years ago

The ratio of girls to boys in Liza’s classroom is 5 to 4. How many girls are in her classroom if there is a total of 27 students

andrezito [222]

Answer:

$15\ girls$

Step-by-step explanation:

Let

x-----> the number of girls

y-----> the number of boys

we know that

$x+y=27$ -----> equation A

$\frac{x}{y}=\frac{5}{4}$

isolate the variable y

$y=\frac{4}{5}x$ -----> equation B

Substitute equation B in equation A

$x+\frac{4}{5}x=27$

$\frac{9}{5}x=27$

$x=5*27/9=15\ girls$

3 0

3 years ago

Read 2 more answers

F(x) = x^4- x^4 - 20<br><br> find all zeros by factoring and explaining the steps

Soloha48 [4]

No x-intercept/zero

Step by step

To find x-intercept/zero, substitute f(x)=0

F(x)=-20

0=-20

The statement is false for any value of

X=0

Since there is no solution for f(x)=0, there is no -intercept/Zero

Your welcome:)

5 0

2 years ago