All categories

2 years ago

What is 1000x - 1x? A) 101x B) 1001x C) 99x D) 999x

Mathematics

2 answers:

lbvjy [14]2 years ago

6 0

Your answer is D) 999x

Bingel [31]2 years ago

5 0

Hey there!

Let's think of what 1000x means.

We know that multiplication is repeated addition. For example, 5(5) = 5+5+5+5+5. It's 5 added five times.

It's no different here. That means we have x 1000 times. If we look at a simpler situation:

5x - 3x, we have (x + x + x + x + x) - (x + x + x)

That means we're getting rid of 3 x's, which means we have 2x. If we have different coefficients but the same variable, we can just subtract or add the coefficients but keep the variable. That means:

4x - 2x = 2x and 10x - 5x = 5x

Now, we can do this problem. We want:

(1000-1)x = 999x

Your answer is D.

Hope this helps!

You might be interested in

30. TEST SCORES The table shows the number of points each student in Will's study

olganol [36]

Answer:

A-

First we do 72/88 to get the percentage. When the math is done you get 81.81% so that means that Will got an 81.81% on the test.

B-

Now we will do 81/88 to get the percentage because Cheng got 81 points. When that math is done we see that Cheng got a 92.04% on the test.

C-

To get Rob's percentage we need to do 75/88 because Rob got 75 points. When we calculate that we recieve 85.23% meaning he got that on the test.

D-

Now to figure out who got the highest percentage and who got the lowest is simple. The max points doesn't change so it varies on who got the highest and lowest points. We can see that Cheng received the highest with 81/88 (92.04%) and Penny received the lowest with 68/88 (77.27%).

7 0

1 year ago

NEED HELP

nika2105 [10]

Answer: After trying to work out some of the solutions, I have determined that the correct answer is A.

Step-by-step explanation: 8 - 4:30 = 8.5 hrs.

Because the clock does not rotate 360 degrees, which would be at least 8 - 8, we know that it is less. The only solution that makes sense is the way Carl does it, where the answer is 255 degrees.

7 0

3 years ago

In order to qualify for letter sorting l, applicants are given a speed-reading test. The scores are normally distributed, with a

Lerok [7]

Using the normal distribution, it is found that the score needed to qualify is of 88.32.

<h3>Normal Probability Distribution</h3>

In a normal distribution with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

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

It 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, which is the percentile of X.

In this problem, the mean and the standard deviation are given, respectively, by $\mu = 80$ and $\sigma = 8$ .

The top 15% of the applicants are selected, hence the score needed to qualify is the 85th percentile, which is X when Z = 1.04, hence:

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

$1.04 = \frac{X - 80}{8}$

X - 80 = 1.04(8)

X = 88.32.

The score needed to qualify is of 88.32.

More can be learned about the normal distribution at brainly.com/question/24663213

5 0

2 years ago

Alexandria wants to go hiking on Saturday. She will consider these conditions when she chooses which of several

kramer

The inequality to find possible <em>distances</em> from Alexandria's home to a park that satisfies the conditions is: 2+D/50≤6 and the distance is 200 miles.

<h3>Inequality</h3>

Minimum distance=(50×2)

Minimum distance=100 miles

Time (T) required to cover the distance (D)

Time=D/50 hours

Inequality is 2+D/50≤6

Hence:

Let solve for Distance (D)

D/55≤6-2

D≤4×50

≤200

Therefore the inequality to find possible <em>distances</em> from Alexandria's home to a park that satisfies the conditions is: 2+D/50≤6 and the distance is 200 miles.

Learn more about inequality here:brainly.com/question/22857154

#SPJ1

5 0

1 year ago

Help? Show work!<br> Triangle PQR ≅ Triangle XYZ<br> PQ = 3a + 4 and XY = 5a – 12. Find a and PQ.

Ivenika [448]

Given:

$\Delta PQR\cong \Delta XYZ$