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3 years ago

Hello pls join this zoom number: 950-7126-2039

Mathematics

2 answers:

Gnom [1K]3 years ago

8 0

Answer:ok I’ll join

Step-by-step explanation:

zheka24 [161]3 years ago

7 0

Answer:

no sorry i would if i wasnt so late :>

Step-by-step explanation:

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Rico can walk 3 miles in the same amount of time that Donna can walk 2 miles. Rico walks at a rate 2 miles per hour faster than

tatyana61 [14]

Answer:

$13$

Step-by-step explanation:

Donna's Rate is $R$

Rico's Rate is $R+2$

$\frac{R}{R+2}=\frac{2}{3}$

Cross-Multiply

$2(R+2)=32$

$2R+4=3R$

$4=R$

Donna's Rate is $R=4$

Rico's Rate is $R+2=6$

$\frac{6(130)}{60} = \frac{130}{10}=13$

5 0

3 years ago

What is mpo?<br> 128°<br> O 1730<br> O 1920<br> O 256°

Paladinen [302]

Answer:

it's the 2nd one because

Step-by-step explanation:

have a nice day

8 0

3 years ago

What is -2n-5k+8-4n-11=-7

Fittoniya [83]

Answer:

n= 2/3 - 5/6k , ker

Step-by-step explanation:

-2n-5k+8-4n-11=-7

-6n-5k+8-11=-7

-6n=-7+3+5k

-6n=-4+5k

then divide both sides by -6 to get your answer

n= 2/3 - 5/6k , ker

3 0

3 years ago

Solve 16^z+2 *64^z-2

xz_007 [3.2K]

Answer:

Simplify -> 16^z + 2^1+6z - 2

Step-by-step explanation:

5 0

3 years ago

If a paper plane is thrown from the top of a 147-foot cliff into the water below, the height of the plane at any given time can

sasho [114]

Answer:

c. 6.5 seconds.

Step-by-step explanation:

We have been given that a a paper plane is thrown from the top of a 147-foot cliff into the water below, the height of the plane at any given time can be determined by the formula $h = -3t^2+147$ , where h is the height of the plane at t seconds.

To find the time, when plane will be at a height of exactly 20.25 feet, we will substitute $h=20.25$ in our given formula and solve for t as:

$20.25= -3t^2+147$

$-3t^2+147=20.25$

$-3t^2+147-147=20.25-147$

$-3t^2=-126.75$

$\frac{-3t^2}{-3}=\frac{-126.75}{-3}$

$t^2=42.25$

Take square root of both sides:

$t=\pm \sqrt{42.25}$

$t=\pm 6.5$

Since time cannot be negative, therefore, the plane will be at a height of exactly 20.25 feet after 6.5 seconds and option 'c' is the correct choice.

6 0

4 years ago