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matrenka [14]
3 years ago
11

Plz help I need it now plz answer directly without files or links ​

Mathematics
1 answer:
vivado [14]3 years ago
7 0
1 L = 1000 mL
1 kg = 1000 g

You can use this to convert the equations.

200 mL of paint x 5 = 1000 mL (1 liter)
40 g x 5 = 200 grams of paint powder
200 g x 20 = 4000g of paint powder for 20 liters of paint
4000g/600g = 6 2/3

You’ll need 7 packets of paint powder.
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-x^2-2x+7<br> Find the vertex
posledela

Hey there!

Answer:\boxed{(-1,8)}

Explanation:

-x^2 - 2x + 7

To find the vertex, you will rewrite in the vertex form.

f(x) = -(x+1)^2+8

(-1,8)

Hope this helps!

7 0
3 years ago
Read 2 more answers
50 points! Please help it is due soon, I will mark brainliest. Random answers will be reported.
kenny6666 [7]

Step-by-step explanation:

Assuming that the 270° rotation is in a clockwise motion,

A point (a, b) which undergoes such a rotation will have the new point (-b, a).

Since we have A(2, 1),

A' has the coordinates (-1, 2).

3 0
3 years ago
Please help with question #3!
Dmitry [639]

Answer:

  e.  1/(49n² +7n)

Step-by-step explanation:

\dfrac{(7n-1)!}{(7n+1)!}=\dfrac{(7n-1)!}{(7n+1)(7n)(7n-1)!}=\dfrac{1}{(7n+1)(7n)}\\\\=\dfrac{1}{49n^2+7n}

5 0
3 years ago
There is 0.3 kg of tin in a sword.
Sauron [17]

Answer:

2 kg

Step-by-step explanation:

15/100 x = 0.3

x = 0.3 * 100/15

x = 2

7 0
3 years ago
Tammy has scored 82, 78, and 93 on her previous three tests. What score does she need on her next test so that her average (mean
Lyrx [107]

Answer:

She needs a grade of 71 on her next text.

Step-by-step explanation:

Mean of a data-set:

The mean of a data-set is the sum of all values in the data-set divided by the number of values.

Tammy has scored 82, 78, and 93 on her previous three tests.

Thus, her grades are 82, 78, 93 and x, in which x is her grade in the fourth test.

There are 4 tests.

What score does she need on her next test so that her average (mean) is 81?

We have to find x when the mean is 81. So

\frac{82 + 78 + 93 + x}{4} = 81

253 + x = 324

x = 324 - 253

x = 71

She needs a grade of 71 on her next text.

5 0
4 years ago
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