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kherson [118]
2 years ago
14

(This is a word problem) You are making up your own mix of concrete to patch a set of stairs. In order to have the proper mix, y

ou need to mix 1 part of Portland cement with 2 parts of sand and 3 parts of gravel.
a. How many total parts are in one batch of concrete?
b. You make a mix with 4 parts of sand. How many total parts cement, sand, and gravel are in your mix?
Mathematics
1 answer:
Alina [70]2 years ago
8 0
The is 42 because that the answer to the question
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Which expressions are equivalent to 7b(3+c) ?
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C because it's using the distributive property. It's breaking it down into sections.
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3 years ago
In order to test for the significance of a regression model involving 5 independent variables and 123 observations, the numerato
allochka39001 [22]

Answer: The numerator and denominator degrees of freedom (respectively) for the critical value of F are <u>4</u> and<u> 118 .</u>

Step-by-step explanation:

We know that , for critical value of F, degrees of freedom for numerator = k-1

and for denominator = n-k, where n= Total observations and k = number of independent variables.

Here, Numbers of independent variables(k) = 5

Total observations (n)= 123

So, Degrees of freedom for numerator  = 5-1=4

Degrees of freedom for denominator =123-5= 118

Hence, the numerator and denominator degrees of freedom (respectively) for the critical value of F are <u>4</u> and<u> 118 .</u>

5 0
3 years ago
Which statement is true?
zhuklara [117]

Answer:

C) When an altitude is drawn from the right angle of a right triangle it creates three similar triangles.

Step-by-step explanation:

The Inscribed Similar Triangles Theorem states that if an altitude is drawn from the right angle of any right triangle, then the two triangles formed are similar to the original triangle and all three triangles are similar to each other.

4 0
2 years ago
Carpenters refer to the slope of a roof as the pitch on the roof
sweet [91]

Answer:

Step-by-step explanation:

pitch=4/12=1/3

4 0
2 years ago
If a point on the pre-image has coordinates (3.-4), and the coordinates of Its Image are (12,-16), what scale factor was
Ksenya-84 [330]

Answer:

scale factor of 4

Step-by-step explanation:

3 times 4 equals 12

-4 times 4 equals -16

3 0
3 years ago
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