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SCORPION-xisa [38]
3 years ago
14

Describe how to use a tens fact to find the difference for 15-8

Mathematics
1 answer:
shusha [124]3 years ago
7 0
You can round 15 to 20, and 8 to 10
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Kerry and her brother and noticed there is 3/4 of a pint of ice cream in the freezer. After they eat some ice cream there is 1/3
7nadin3 [17]

Answer:

\frac{5}{12} \ of\ a \ pint.

Step-by-step explanation:

Given:

Kerry and her brother and noticed there is 3/4 of a pint of ice cream in the freezer.

After they eat some ice cream there is 1/3 of a pint left.

Question asked:

How much ice cream did Kerry and her brother eat ?

Solution:

Total ice cream in the freezer = \frac{3}{4} \ of\ a\ pint

Ice cream left =  \frac{1}{3}\ of\ a \ pint

<h3>They ate = Total ice cream in the freezer - Ice cream left after they ate</h3>

                  =\frac{3}{4} -\frac{1}{3} \\ \\\\Taking \ LCM \ of 4 \ and\ 3, we \ got ,12\\ \\=\frac{3\times3-4\times1}{12} \\\\  =\frac{9-4}{12} \\ \\ =\frac{5}{12}

Thus, Kerry and her brother ate \frac{5}{12} \ of\ a \ pint.

7 0
3 years ago
Charles buys 10 drinks and 3 sandwiches for $34. Isabel buys 5 drinks and 4
lukranit [14]
Drinks cost $1 and Sandwiches cost $8

7 0
3 years ago
9. What is the vertex of the function? f(x) = 3x² - 8x + 10​
Delvig [45]

Answer:

The vertex of the function is (1.333, 4.667)

Step-by-step explanation:

1. Calculate -b / 2a. This is the x-coordinate of the vertex.

2. simply plug -b / 2a into the equation for x and solve for y.

Y = 3x^{2}  - 8x + 10\\Compare with the form of   y = ax^{2} + bx + c\\So that means a = 3, b = -8, and c = 10.

Calculate -b/2a:

X = -(-8)/2(3)

X = 8/6

This is equal to 1.33 recurring

Plug 8/6 for x and solve for y:

Y = 3x^{2} - 8x + 10

Y = 3(\frac{8}{6})^{2} - 8(\frac{8}{6}) + 10

Y = \frac{48}{9} - \frac{64}{6} + 10\\

This is equal to 4.66 reccuring.

7 0
2 years ago
WILL AWARD BRAINLIEST!!!
Anna007 [38]

Answer:

<u>A. p(hat) = .139</u>

We divide our sample population by the amount who tested positive. 14851/107109 = .139.

<u>B. 1.62 million</u>

We just multiply the p times the population. 11.69 M * .139 = 1.62 M

<u>C. No</u>

It depends upon the sample method. From what I can tell, I assume all conditions are met and it was not biased.

If it wasn't random, that is a problem, but we aren't given this information.

We can test if it's small enough. It can't be larger than 10% of the population. 107109 * 10 < 11.69 million, so it's small enough.

We can also test if it's large enough. np and nq must be greater than 10. 107100 * .139 > 10, 107100 * .861 > 10.

7 0
3 years ago
How do I slove this eqaution, and whats the answer?<br> -3(n+6)+10=-9
Sauron [17]

Answer:

n = \frac{1}{3}

Step-by-step explanation:

  1. Apply the distributed property, so it now looks like this: -3n + -18 + 10 = -9
  2. Combine like terms: -3n + -8 = -9
  3. Simplify: -3n - 8 = -9
  4. Add 8 to each side, so it now looks like this: -3n = -1
  5. Divide each side by -3 to cancel out the -3 next to n. It should now look like this: n = 1/3

I hope this helps!

8 0
3 years ago
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