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Stels [109]
3 years ago
14

Help (100 + 650) - (2x 300) ??

Mathematics
2 answers:
Kipish [7]3 years ago
5 0
It’S 750-600 this the answer
Nutka1998 [239]3 years ago
5 0

Answer:

750-302

Step-by-step explanation:

Distribute the negative sign to the values in the parenthesis.

(-2-300)

Then add the numbers in the first set of parenthesis

(100+650)=750

Subtract -2-300

=(-302)

Hope this helps! :)

Correct me if I'm wrong  

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The perimeter of a rectangular field is 74 yards. The length of the field is 27 yards. What is the width in yard of the field
KonstantinChe [14]

Answer:

width = 10 yds

Step-by-step explanation:

perimeter = 2L + 2W

74 = 2(27) + 2W

74 = 54 + 2W

subtract 54 from both sides of the equation:

2W = 20

divide both sides by 2:

W = 10

7 0
3 years ago
A worn, poorly set-up machine is observed to produce components whose length X follows a normal distribution with mean 14 centim
Akimi4 [234]

Answer:

74.86% probability that a component is at least 12 centimeters long.

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 = 14

Variance is 9.

The standard deviation is the square root of the variance.

So

\sigma = \sqrt{9} = 3

Calculate the probability that a component is at least 12 centimeters long.

This is 1 subtracted by the pvalue of Z when X = 12. So

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

Z = \frac{12 - 14}{3}

Z = -0.67

Z = -0.67 has a pvalue of 0.2514.

1-0.2514 = 0.7486

74.86% probability that a component is at least 12 centimeters long.

6 0
3 years ago
6 + 12 = 25 -<br> Which value makes the number sentence true?<br> A. 6<br> B. 7<br> C. 12<br> D. 18
max2010maxim [7]

Answer:

7

Step-by-step explanation:

6+12=18

25-7=18

7 makes the sentance true.

4 0
3 years ago
Julie decided to grow a plant from a seed. She measured the height of her plant each day for 30 days.
k0ka [10]

The given formula is f(t) = 0.4t

They want to solve for f(10), replace t in the formula with 10"

f(10) = 0.4(10)

Multiply:

f(10) = 4 centimeters.

4 0
3 years ago
Please help due in 5 minutes !
Alexxx [7]
It’s 8:1 hope this help
4 0
3 years ago
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