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Lady_Fox [76]
3 years ago
7

7. The ratio of the weight of cement to the weight of sand in a concrete mixture is 1:3.

Mathematics
1 answer:
kondaur [170]3 years ago
4 0
1 3 6 concrete ratio
Concrete
Proportions by Cement No. of 50 kg Sand to total aggregate
1:3:6 4.0 31
1:4:5 4.0 41
1:3:5 4.4 35
1:4:4 4.5 47
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Properties of the normal distribution include?
V125BC [204]

Answer:

Properties of a normal distribution

The mean, mode and median are all equal.

The curve is symmetric at the center (i.e. around the mean, μ).

Exactly half of the values are to the left of center and exactly half the values are to the right.

The total area under the curve is 1.

Step-by-step explanation:

6 0
3 years ago
Expand and simplify (x + 11)(x + 11)
labwork [276]

Answer:

Expand: x² + 11x + 11x + 121

Simplify: x² + 22x + 121

Step-by-step explanation:

To expand this, you can use the FOIL technique:

First terms

Outer terms

Inner terms

Last terms

(x+11)(x+11)

F - x*x = x²

O - x*11 = 11x

I - 11*x = 11x

L - 11*11 = 121

Put these numbers together (expanded) to get:

x² + 11x + 11x + 121

Put the common terms together (simplify) to get:

x² + 22x + 121

Note:

Not sure if you need this info, but (x + 11)(x + 11) is the same as (x + 11)².

The numbers need to be in the order I put them in because you are supposed to place them in order greatest to least degree.

Hope it helps!

6 0
3 years ago
11. Is the fraction 1/3 equivalent to a terminating
snow_tiger [21]

Answer:

It is equivalent to a decimal that does not terminate.

Step-by-step explanation:

When you divide 1 by 3, you get 0.33333333333333333333333333333333333333333333333333333 forever. The decimal never ends.

4 0
2 years ago
A forest covers 46,000 acres. A survey finds that 0.6​% of the forest is​ old-growth trees. How many acres of​ old-growth trees
In-s [12.5K]

Answer: 275 maybe

Step-by-step explanation: i did 46,000 x 0.6% and got 275.

5 0
2 years ago
4 Apoint Q with coordinates of (8. 6) is reflected across they axis. What is the new<br> Coordinate
kolbaska11 [484]

Answer:

8. -6

Step-by-step explanation:

5 0
3 years ago
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