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2 years ago

Helpp i really neeed it

Mathematics

1 answer:

Marizza181 [45]2 years ago

7 0

Answer:

9 hours

Step-by-step explanation:

If she makes $ 20 for each car, washing 9 cars in 3 hours would get $ 180.

So she will need to work 9 hours 180 + 180 + 180, washing 9 cars in 3 hours and would get $ 540. This is enough to buy her phone and she will have a surplus of $ 120.

In summary she must work 9 hours

Hope this helps you, please give me the brainliest

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there are three oranges in 200g of bag . if the weight of them with bag is 1.4kg. find the weight of an orange.i want full metho

Lana71 [14]

the bag is 200g

total weight with oranges is 1400g

deduct the bags weight from total weight

1400 - 200

1200g

this is the weight of the three oranges

so each orange would be

1200 ÷ 3

400g

4 0

3 years ago

Can someone help me with 5 and 6? How do I put it? Will mark brainliest!

n200080 [17]

Answer:

2 + 3 < y

y + 2 ≥ 6

5 0

2 years ago

Read 2 more answers

SHOW WORK PLEASE IN A TESt!!!

charle [14.2K]

Add 10 to both sides to cancel out the 10
divide 2 on both sides
X= 18

4 0

2 years ago

An athletics coach states that the distribution of player run times (in seconds) for a 100-meter dash is normally distributed wi

Elza [17]

Answer:

$P(X$

And we can find this probability using the normal standard distribution table and we got:

$P(z$

And the percentage faster than 13.28 seconds would be 91.9%

Step-by-step explanation:

Let X the random variable that represent the runtimes of a population, and for this case we know the distribution for X is given by:

$X \sim N(13,0.2)$

Where $\mu=13$ and $\sigma=0.2$

We want to find this probability:

$P(X$

And we can use the z score formula given by:

$z=\frac{x-\mu}{\sigma}$

Using this formula we have:

$P(X$

And we can find this probability using the normal standard distribution table and we got:

$P(z$

And the percentage faster than 13.28 seconds would be 91.9%

8 0

2 years ago

Is my answer correct? if not please correct me

elena-s [515]

Using the given equation y-3 = 3/4(x+2)

Give Y a value and then solve for x:

If y = 0 the equation is now:

0 -3 = 3/4(x+2)

Solve for x:

-3 = 3/4x + 1.5

-4.5 = 3/4x

x = -4.5 / 3/4

x = -6

So the first point would be (-6,0)

Now make x 0 and solve for y:

y -3 = 3/4(0+2)

y-3 = 0 + 1.5

y = 4.5

So the 2nd point would be (0,4.5)

You are close, but the dot you have on y=4, needs to be moved up to 4.5.

8 0

3 years ago