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3 years ago

The sum of 10 and one-third of a number is equal to 13. What is the number? (Write an equation and solve)

Mathematics

2 answers:

4vir4ik [10]3 years ago

7 0

Answer:

9 is the answer and the equation is 10 + 1/3x = 13

Step-by-step explanation:

10 + 1/3x = 13

-10 -10

____________

1/3x = 3

mote1985 [20]3 years ago

4 0

Answer:

1 and 1 third. SOo..: 1 1/3

Step-by-step explanation:

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The weights of adobe bricks used for construction are normally distributed with a mean of 3 pounds and a standard deviation of 0

dedylja [7]

Answer: a) 0.8413, b) 0.9987.

Step-by-step explanation:

Since we have given that

Mean = 3 pounds

Standard deviation = 0.25 pounds

n = 28 bricks

So, (a) What is the probability that all the bricks in the sample exceed 2.75 pounds?

$P(X>2.75)\\\\=P(z>\dfrac{2.75-3}{0.25}\\\\=P(z>\dfrac{-0.25}{0.25})\\\\=P(z>-1)\\\\=0.8413$

b) What is the probability that the heaviest brick in the sample exceeds 3.75 pounds?

$P(X>3.75)\\\\=P(z>\dfrac{3.75-3}{0.25})\\\\=P(z>\dfrac{0.75}{0.25})\\\\=P(z>3)\\\\=0.9987$

Hence, a) 0.8413, b) 0.9987.

4 0

3 years ago

What is the range of the following function

AleksAgata [21]

The range is the set of y.

(-4, 4) → 4

(-3, 0) → 0

(-2, 1) → 1

(-1, 3) → 3

(0, 0) → 0

(1, 5) → 5

Answer: {0, 1, 3, 4, 5}

3 0

3 years ago

What’s the value of DCB?<br> Pls help

amm1812

Answer:

Step-by-step explanation:

angle ACD + angle DCB = 180 (Angles on straight line)

4x + 2 + 3x + 3 = 180

7x + 5 = 180

7x = 180-5

7x = 175

x = 175 / 7

x = 25

angle DCB = 3x +3 = 3*25 + 3 = 75 +3 = 78

6 0

3 years ago

A soft drink costs $1.65, and each refill for the drink costs $0.95. If you have $4.50, how many refills can you purchase?

aleksandrvk [35]

You can apurchase 3 refills

5 0

3 years ago

Read 2 more answers

I need help asap I'll give brainliest

weqwewe [10]

What's the question?

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3 years ago