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Anna71 [15]
3 years ago
11

Find the sum. Write your answer in scientific notation. (5.2 x 10^-3) + (4.1 x 10^-3) =​

Mathematics
1 answer:
EastWind [94]3 years ago
5 0

Answer:

9.3 x 10^-3

Step-by-step explanation:

(5.2 x 10^-3) + (4.1 x 10^-3)

= (5.2+4.1) x 10^-3

= 9.3 x 10^-3

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Which expression is equivalent to 83⋅ 8−7
Dafna11 [192]

Next time add an image, but know that the expression is equal to 657 since..

83 * 8 -7

Use PEMDAS

664 - 7

657

6 0
3 years ago
Read 2 more answers
The area of the triangle below is 10.6 square centimeters. What is the length of the
CaHeK987 [17]

Answer:

6 cm

Step-by-step explanation:

The area of a triangle is \frac{bh}{2} = A, where b = base, h = height, and A = area. In this case, we're given the height as 4 cm and the area as 6 cm^2.

Let's plug in these values.

  • \frac{4b}{2} = 6

Now, let's solve this algebraically.

Step 1: Multiply both sides by 2.

  • \frac{4b}{2} * 2 = 6 * 2
  • 4b = 12

Step 2: Divide both sides by 4.

  • \frac{4b}{4} = \frac{12}{4}
  • b = 3

Step 3: Check if solution is correct.

  • \frac{3*4}{2} = 6
  • \frac{12}{2} = 6
  • 6 = 6

Therefore, the base is 6 cm. (but don't put the cm in the box because it's already there)

Have a lovely rest of your day/night, and good luck with your assignments! ♡

3 0
3 years ago
What is the simplest form of this expression? -x^3(5x+1)+4x^4
Fantom [35]

Answer:

-x^3*(x + 1)

Step-by-step explanation:

Perform the indicated multiplication and then write out all the terms in descending order by powers of x:

-x^3(5x+1)+4x^4  =  -5x^4 - x^3 + 4x^4

                            =  -x^4 - x^3, or = -x^3*(x + 1)  

7 0
3 years ago
suppose that a set of scores has a mean of 5 and standard deviation of 2. what score corresponds to a z score of -2.0?
anzhelika [568]

The set of scores has a mean of 5 and a standard deviation of 2. The score which corresponds to a z score of -2.0 is 1.

Given in the question,

Mean (m) = 5

Standard deviation σ =2

Z-score = -2

The score x,

= Z = x - m / σ

= -2 = x - 5 / 2

= -4 = x - 5

= x = 1

Standard deviation in statistics means the amount of dispersion or variations in the set of values. A lower standard deviation means the value is closer to the mean while a higher standard deviation means the value is farther away from the mean.

To learn more about standard deviation, mean, median, and mode,

brainly.com/question/27878918

#SPJ4

5 0
1 year ago
Refer to the data in the table below to answer the question. (Express percents to the nearest tenth.) You will use some of the a
AnnZ [28]

Answer:Ask your teacher for help!

Step-by-step explanation:

Learn your math and pay attention then you’d know!

4 0
1 year ago
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