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Julli [10]
4 years ago
10

Can somebody plz help me im struggling on it.

Mathematics
1 answer:
nata0808 [166]4 years ago
4 0

1. - 1/8

First you take the 7/16 out of the parentheses and since there is an ➕ infro t of it the equation stays the same. So it would look like this:

5/16 - 7/16

Then subtract the fractions to get -1/8

2. 1/3

Remove the parentheses to get 3/5 - 4/15 then subtract the fractions to get your answer, 1/3

3. -3/2

First use the greatest common divisor by 3 and reduce the numbers so your equation will look like this:

- 7/2 ➕ 2

Then calculate the sum to get your answer: -3/2

4. 4.3

First remove the -1.3 from the parentheses and it would look like this: 5.6 - 1.3 then subtract to get your answer: 4.3

5. -2.8

Add the  two numbers together to get your answer: -2.8

6. -5.61

Remove the parentheses so your equation looks like this: 7.15- 12.76 then subtract them to get your answer: -5.61


Hope this helps! :3

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Brendan bought an iced tea that cost $4.06 plus 7% sales tax. If Brendan left an 18% tip on the $4.06, how much in total did he
ahrayia [7]

Answer:

Step-by-step explanation:

18% tip in $=18/100 * $4.06

$0.7308

7% sales tax in $= 7/100 * $4.06

$0.2842

Total amount he paid= $0.7308+$0.2842+$4.06

$5.07500

6 0
3 years ago
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Solve: simultaneous equations <br> 3x + 4y = 27<br> x + 4y = 17
Leni [432]

Answer:

x = 5, y = 3

Step-by-step explanation:

<u>Elimination method: (I will be eliminating 4y) </u>

3x + 4y = 27 --- Equation 1

x + 4y = 17 --- Equation 2

Equation 1-2: 3x + 4y - x - 4y = 27 - 17

2x = 10

x = 10 ÷ 2

x = 5

Substitute x = 5 into Equation 2:

x + 4y = 17

4y + 5 = 17

4y = 17 - 5

    = 12

y = 12 ÷ 4

y = 3

4 0
4 years ago
234 students in 9 different classrooms. What is the ratio of students to classrooms?
Vilka [71]

Answer:

26 students per classroom

Step-by-step explanation:

To solve this, the ratio 234 students:9 classrooms must be converted to:

s students:1 classroom

To convert the ratio, 9 was divided by 9 to get 1, and so you must also divide 234 by 9 to maintain the same ratio, which gives us the answer:

26 students: 1 classroom

5 0
3 years ago
An integer between 7.2 and 8.8.
sladkih [1.3K]

Answer:

1

Step-by-step explanation:

7 0
4 years ago
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A baseball player has a batting average of 0.26. What is the probability that he has exactly 6 hits in his next 7 at bats
LenKa [72]

Answer:

0.0016

Step-by-step explanation:

Batting average, p = 0.26

n = 7

x = 6

With p = 0.26 as success rate

1-p is equal to failure rate which is = 0.74

We have to solve this by using the binomial distribution formula.

P(X= x)

= nCx * p^x * (1-p)^(n-x)

P(X = 6)

=7C6 × 0.26^6 ×(1-0.26)^(7-6)

= 7 × 0.0003089 × 0..74¹

= 0.0016

So probability that he has exactly 6 hits in his next 7 bats is equal to 0.0016.

8 0
4 years ago
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