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Soloha48 [4]
2 years ago
5

Please help me with this??

Mathematics
1 answer:
Ludmilka [50]2 years ago
6 0

Answer:

c, d and f are rational numbers

Step-by-step explanation:

c) 3\sqrt{5}*2\sqrt{5}=3*2*\sqrt{5*5} = 3*2*5 = 30\\\\\\d)  \dfrac{3\sqrt{5}}{2\sqrt{5}}= \dfrac{3}{2}\\\\\\f)  \dfrac{2\sqrt{5}}{3\sqrt{5}}= \dfrac{2}{5}

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13^-11x13^16x13^-3x13^^4x13^-5
stiv31 [10]
Since the bases are all 13, keep the base and add the powers.
13^(-11 + 16 + -3 + 4 + -5)
13^1 = 13
4 0
4 years ago
Annie and her family are on their way to visit some family friends who live 820 miles away from them. Based on the route they ch
Stella [2.4K]

Answer:

4 hours

Step-by-step explanation:

The distances and average speeds for the first two days driven are show below.

Step 1

We calculate the total distance covered in the first two days

First day: 6 hours at an average speed of 60 miles per hour

Hence:

1 hour = 60 miles

6 hours = x

x = 60 × 6

x = 360 miles

Second day: 4 hours at an average speed of 65 miles per hour

Hence:

1 hour = 65 miles

4 hours = x

x = 65 × 4

x = 260 miles

The distance covered for the first two days =

(360 + 260)miles

= 620 miles

Step 2

The total distance for the entire trip = 820 miles

Hence, the distance left to cover on the third day = (820 - 620)miles

= 200 miles

In the question, we are told:

If the average speed on the third day is 50 miles per hour,

The number of hours it will take for them to reach their family friends home is calculated using the formula

Time = Distance/Speed

Time = 200 miles/50 miles per hour

Time = 4 hours

3 0
3 years ago
Solve for this<br> 26y-4-11y=15y+6
Anastaziya [24]

Answer:

30y+2

Step-by-step explanation:

Because all u do is add the numbers in da first half day second half u add so peace✌

6 0
3 years ago
A college admits a freshman class of 330 students at the beginning of each academic year and graduates 145 students twice a year
Andre45 [30]

Answer:

  • 200 students

Step-by-step explanation:

<u>Change in one year:</u>

  • 330 - 2(145) = 330 - 290 = 40

<u>Change after 5 years:</u>

  • 40*5 = 200 students

5 0
3 years ago
Write the equation in standard form using integers.
ikadub [295]

Standard form is Ax +By =c

y = -4/5 x -7

multiply by 5

5y = -4x -35

add 4x to each side

4x +5y = -35

multiply by -1

-4x -5y = 35

Choice D

6 0
3 years ago
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