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alexandr402 [8]
3 years ago
8

HELP PLEASE!!!!!!!!!!!

Mathematics
1 answer:
solong [7]3 years ago
8 0
The original cost of her dinner was 20 dollars.
First set up an equation,
.30x = 6
(x represents the original cost)
To isolate x, divide both sides by .30.
x = .30/6
x= 20 (the original cost)
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Write these numbers in order from least to greatest. ( 3-3/10), (3.1) , (3-1/4)
Orlov [11]

Our three numbers are...

3 3/10 = 3.3

3.1

3 1/4 = 3.25

So, if we order those from least to greatest, we have...

3.1, 3.25, 3.3

which, in the forms given, is...

3.1, 3-1/4, 3-3/10

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3 years ago
10x - 4y=-20<br> Please help find number that fit to x and y that get me -20
garik1379 [7]

Answer: (0, 5) and (-2, 0)

<u>Step-by-step explanation:</u>

10x - 4y = -20

Let x = 0, then 10(0) - 4y = -20

                                  -4y = -20

                               <u> ÷ -4 </u>   <u>÷ -4  </u>

                                     y = 5

Let y = 0, then 10x - 4(0) = -20

                         10x -  0    = -20

                      <u> ÷10           </u>    <u> ÷10   </u>

                             x         = -2

7 0
3 years ago
Is square root 1-cos^2theta=-sintheta true? if so, in which quadrants does angle theta terminate?
oksano4ka [1.4K]

Yes it is true:

(1 - cos^2 x) = sin^2 x Sqr.(1 - cos^2 x) = sin x and (-sinx) True, since sin x negative. Also, x terminates in quadrant 3 and 4. Hope this is helpful

4 0
3 years ago
En un censo realizado en escuelas de enseñanza media superior de un municipio, participaron 8 escuelas que indicaron la cantidad
Harrizon [31]

Answer:

In a census carried out in upper secondary schools in a municipality, 8 schools participated, indicating the number of students who graduated in a given year. The data is shown in the following graph and according to this, what was the average number of graduated students?

Step-by-step explanation:

This is what it says in english

7 0
3 years ago
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