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3 years ago

Is the answer 4? because i don't know if i did this right

Mathematics

1 answer:

ZanzabumX [31]3 years ago

3 0

Answer:

yea no

Step-by-step explanation:

Logic. try again

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The ratio of boys to girls in a class is 3:1. There are 36 students in the class. How many more boys than girls are there?

padilas [110]

Answer:

9 girls 27 boys

Step-by-step explanation:

for every 1 girl there is 3 boys this means 36 = G + 3B

go through this on a calculator and boom done.

7 0

3 years ago

Can someone explain what to do

castortr0y [4]

Answer:

Step-by-step explanation:

The equation of the parabola can be represented as

$y = a(x + 1)(x - 5)$

for some constant a.

Since the coefficient of x² is 2, a = 2, so

$y = 2(x + 1)(x - 5) \\ \\ y = 2( {x}^{2} - 4x + 5) \\ \\ y = 2 {x}^{2} - 8x + 10$

So, the answer is 8.

7 0

2 years ago

suppose your salary in 2013is $ 60,000 .Assuming an annual inflation rate is 6 % ,whats do you need to earn in 2021 in ordertoha

Tcecarenko [31]

Answer:

isjsjanammz

Step-by-step explanation:

bzbaiakxbnnsnakzkz

4 0

3 years ago

Can somebody please help me with this question??<br>10=10(k-9)

SashulF [63]

K = 10

I think. I’m not positive sure though. Hope this helped!

4 0

3 years ago

Read 2 more answers

On a cold day, hailstones fall with a velocity of 2i − 6k m s−1 . If a cyclist travels through the hail at 10i m s−1 , what is t

Paraphin [41]

Answer:

The velocity of the hail relative to the cyclist is $V_{hc}=-8\hat{i}-6\hat{k}$

The angle at which hailstones falling relative to the cyclist is $\theta = 36.86^\circ$

Step-by-step explanation:

Given : On a cold day, hailstones fall with a velocity of $2\hat{i}-6\hat{k}\text{ m/s}$ . If a cyclist travels through the hail at $10\hat{i} \text{ m/s}$ .

To find : What is the velocity of the hail relative to the cyclist and At what angle are the hailstones falling relative to the cyclist?

Solution :

The velocity of the hailstone falls is $V_h=2\hat{i}-6\hat{k}\text{ m/s}$

The velocity of the cyclist travels through the hail is $V_c=10\hat{i} \text{ m/s}$

The velocity of the hail relative to the cyclist is given by,

$V_{hc}=V_h-V_c$

Substitute the value in the formula,

$V_{hc}=2\hat{i}-6\hat{k}-10\hat{i}$

$V_{hc}=-8\hat{i}-6\hat{k}$

So, The velocity of the hail relative to the cyclist is $V_{hc}=-8\hat{i}-6\hat{k}$

Now, The angle of hails falling relative to the cyclist is given by

$\theta = \tan^{-1}(\frac{-6}{-8})$

$\theta = \tan^{-1}(\frac{3}{4})$

$\theta = 36.86^\circ$

So, The angle at which hailstones falling relative to the cyclist is $\theta = 36.86^\circ$

4 0

4 years ago