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Sonja [21]
3 years ago
15

10 point please I need help

Mathematics
2 answers:
tankabanditka [31]3 years ago
8 0
She owns 4 black and 4 gray t-shirts because the ratio is 1:2 before buying, the question said how many Black and gray t-shorts did she buy, and both colors have to be equal, so she will buy 3 gray and 2 black t-shirts.

Enjoy the lesson and I hope your having a good day!
r-ruslan [8.4K]3 years ago
6 0

Answer:

Now has 12 gray t-shirts & 12 black t-shirts

Step-by-step explanation:

Starts out with 1 gray for every 2 blacks. This is a 1:2 ratio. Ends with same number of each. This is a 1:1 ratio. To achieve that ratio she had to by 6 gray shirts.

If she started with 6 gray and 12 black this would fit the 1:2 ratio. If she bought 6 gray and now has 12 gray and 12 black, this would fit the 1:1 ratio.

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I need to answer a question.
Lady_Fox [76]

Answer:

17/20

Step-by-step explanation:

Probability is actually very fun once you understand it. So, you know that the bag contains 20 marbles. You also know that only 3 of those 20 are yellow. Subtract 3 from 20 and you get 17, which is your answer. Hope this helped, and let me know if you need any more help!

8 0
3 years ago
Read 2 more answers
Linear equations<br>a+2b=-1 <br>2a+3b=23​
Keith_Richards [23]

Answer:

<h3>.2a + 4b = -2</h3><h3> 2a + 3b = 23</h3><h3><u>We</u><u> </u><u>subtr</u><u>act</u><u>.</u><u>.</u></h3><h3><u> </u><u> </u><u>0</u><u> </u><u>+</u><u> </u><u>b</u><u> </u><u>=</u><u> </u><u>-</u><u>2</u><u>5</u></h3>

<h3>a + (2×-25) = -1</h3><h3>a - 50 = -1</h3><h3>a = -1+50</h3><h3><u>a</u><u> </u><u>=</u><u> </u><u>4</u><u>9</u><u>.</u></h3>

<h3><u>a</u><u> </u><u>=</u><u> </u><u>4</u><u>9</u></h3><h3><u>b</u><u> </u><u>=</u><u> </u><u>-</u><u>2</u><u>5</u><u>.</u></h3>

Step-by-step explanation:

<h3><u>provin</u><u>g</u><u> my</u><u> </u><u>an</u><u>swer</u><u>.</u></h3>

<h3>a + 2b = -1</h3><h3>49 + (2×-25) = -1</h3><h3>49 - 50 = -1</h3>

<h3>2a + 3b = 23</h3><h3>(2×49) + (3×-25) = 23</h3><h3>98 + (-75) = 23</h3><h3>98 - 75 = 23</h3>
5 0
3 years ago
4 + -6g + 10g + -5 anwser
Olegator [25]

Answer:

4g - 1

Step-by-step explanation:

4 and -5 are numbers

While, -6g and 10g are variables.

Add numbers and variable separately.

4 + -6g + 10g + -5

= 4 - 5 + 10g - 6g

= - 1 + 4g

= 4g - 1

4 0
3 years ago
Which value for x makes the sentence true?
PolarNik [594]

Answer:

B

Step-by-step explanation:

\frac{1}{40}  + x =  \frac{1}{8}

40( \frac{1}{40})  + (40)x = 40( \frac{1}{8} )

1 + 40x = 5 \times 1

1 + 40x = 5

40x = 5 - 1

40x = 4

\frac{40x}{40}  =  \frac{4}{40}

x =  \frac{1}{10}

3 0
2 years ago
Expand (a – 1)(a – 2) by using the FOIL method.
ddd [48]
The answer is A.

(a-1)(a-2)

a * a= a^2
a * -2= -2a
a * -1 = -1a = a
-1 * -2 = 2 because two negative signs make a positive.

Put them together:

a^2 - 2a - a + 2
= a^2 - 3a +2
4 0
4 years ago
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