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Anestetic [448]
3 years ago
9

Ahmed is riding the elevator in a building. The building has floors above and below ground level. Ahmed uses the expression belo

w to describe his movement. 6 + (–8) Which statement could describe Ahmed’s movement?

Mathematics
2 answers:
inysia [295]3 years ago
8 0

Solution:

As the Options are not given

6 + (-8)

It means Ahmed is on the Sixth floor, above the ground floor and then goes 8 floor Downwards which is 2 level below the ground floor.

The Answer in form of numbers is = -2

Because when we add a positive integer and a negative integer , we just subtract smaller integer from larger integer , and keep that sign before the result which the larger number bears.

6 + (-8)=

8 is larger integer which bears negative sign.

One integer is positive and another one is negative,

8 -6= 2

So, 6 + (-8) = -2 →→   2 level below the ground level

I have drawn number line for you.

ASHA 777 [7]3 years ago
6 0
He moved 6 floors up, then moved 8 floors down. So he is now 2 floors below ground level.

I hope this helps.
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Elan Coil [88]

Answer: 5

Step-by-step explanation:

Pythagorean Theorem = a^2 + b^2 = c^2 (hypotenuse)

the square root of 4^2 + 3^2 = c

c = 5

3 0
2 years ago
I need help quick please help me thnak you
quester [9]

Answer:

28 numbers

Step-by-step explanation:

There is a distance of 81 between -0.5 and 80.5. Divide this number by 3, since you are only counting every third number and you will get 27, but you need to count the first number, which has been excluded. Add one more to get the answer, 28.

3 0
3 years ago
If y=kx, where k is a constant, and y=24 when x=6, what is the value of y when x=5
Phoenix [80]
I hope this helps <span>24 = k * 6  </span><span>4 = k  </span><span>y = kx  </span><span>y = 4x  </span><span>y = 4 * 5  </span><span>y = 20 

</span>
6 0
3 years ago
Why does the value of money in a savings account increase over time? A. because it earns interest B. because future value is alw
vodka [1.7K]

Answer:

A. because it earns interest

Step-by-step explanation:

The interest rate is the gaining that you make for keeping your money in the bank. Suppose you have $100 and the bank offers you a 5% annually interest rate. The rate (5%) means that your money will earn five percent of the value each year, so after the first year you will earn (5%)*($100) = $5 of interest just for keeping your money in your savings account. Therefore, your money will grow overtime because it is earning interest. Remember that interest can be compound (over periods) or simple (like our example).

8 0
2 years ago
Read 2 more answers
9. Gold miners in Alaska have found, on average, 12 ounces of gold per 1000 tons of dirt excavated with a standard deviation of
netineya [11]

Answer:

9.18% probability the miners find more than 16 ounces of gold in the next 1000 tons of dirt excavated

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 12, \sigma = 3

What is the probability the miners find more than 16 ounces of gold in the next 1000 tons of dirt excavated?

This is 1 subtracted by the pvalue of Z when X = 16. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{16 - 12}{3}

Z = 1.33

Z = 1.33 has a pvalue of 0.9082

1 - 0.9082 = 0.0918

9.18% probability the miners find more than 16 ounces of gold in the next 1000 tons of dirt excavated

5 0
2 years ago
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