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Brums [2.3K]
2 years ago
9

A family arrives home at 01:10 after a journey that took 7 1/2 hours . At what time of the pervious day did bay start their jour

ney ?
Mathematics
1 answer:
garik1379 [7]2 years ago
5 0

Answer:

they started their journey at 5:40

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The longer leg of a 30°- 60°- 90° triangle is 4 3 cm. Which is the length of the hypotenuse?
liberstina [14]

i think its 25 because of the Pythagorean theorem. 4^2 + 3^2= 16 + 9 =25

When you find the square root of 25 its 5

6 0
3 years ago
Brittany opened a savings account with an annual interest rate of 10% and an initial deposit of $7000. If her interest is compou
GenaCL600 [577]

Initial Deposit = $7000

It means P= $7000

rate of interest = 10%

So , r = 0.10

compounded quarterly , so  n = 4

and we have to find the amount after 5 years , So t = 5


Now the formula we use here is

A= P(1+\frac{r}{n} )^{nt}

A= 7000(1+\frac{0.10}{4} )^{(4)(5)}

A= 7000(1.025 )^{(20)}

A= 7000(1.63861644029)

A= 11470.315


So amount after 5 years = $11470.315


5 0
3 years ago
Read 2 more answers
X+y=26<br> 3x+8y=123<br> What is x equal
Pani-rosa [81]

Answer:

x=17, y=9. (17, 9).

Step-by-step explanation:

x+y=26

3x+8y=123

------------------

x=26-y

3(26-y)+8y=123

78-3y+8y=123

78+5y=123

5y=123-78

5y=45

y=45/5

y=9

x=26-9=17

5 0
3 years ago
If x2+y2 = 12 and x2-y2=18, what is the value of x4-y4?
nataly862011 [7]

Answer:

Step-by-step explanation: add the equations

2x² = 30

x² = 15

y² = 12 - 15

    = -3

x4 -y4 = 15² - (-3)²

           = 216

6 0
1 year ago
What is the value of x?
GenaCL600 [577]

Answer:

<h2>x = 3</h2>

Step-by-step explanation:

Look at the picture.

We have the triangles 45° - 45° - 90° and 30° - 60° - 90°.

The sides of those triangles are in ratio:

1 : 1 : √2 and 1 : √3 : 2

Therefore

If AC = 6√2 then AB = BC = 6

If BC = 6 then x = 6 : 2 = 3

7 0
3 years ago
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