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mash [69]
3 years ago
9

At 3 p.m the temperature was 9°f by 11 pm it had dropped 31°f what was the temperature at 11 pm

Mathematics
1 answer:
NemiM [27]3 years ago
3 0
-22 degrees ferenheit
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Shaun needs to make mortar for brick-laying. It is made in the ratio 7:3 of sand to cement.
Tju [1.3M]
Sand to cement
7:3

210:x

ask yourself what number is needed to multiply by 7 to get 210 ( so you'd divide 210 by 7 which is 30). Multiply the other side by thirty as well to get the value of x

3*30 which is 90

7 0
3 years ago
Do the ratios 1:5 and 3:4 form a proportion?​
bagirrra123 [75]

Answer

no

Step-by-step explanation:

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3 years ago
Tobias has 12 coins in his pocket. Of these coins, 8 were made in the year 2000,and
Free_Kalibri [48]
Answer on attached file.
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7 0
3 years ago
A bag contains 2 white marbles and 7 purple marbles. Two marbles are drawn at random. One marble is drawn and not replaced. Then
Masja [62]
A.
\frac{7purple}{9total} *  \frac{2white}{8total}  \\  \frac{14}{72}  \\ =0.194
The denominator of the second number goes down one because you aren't replacing the initial marble pulled, making the amount of marbles in the bag go down, but not affecting the white count because you pulled a purple marble.
b.
\frac{2white}{9total} *  \frac{1white}{8total}  \\  \frac{2}{72}  \\ =0.278
The same can be said about the denominator for this problem, but not the numerator. The numerator must go down one number as well, because you already chose one white marble, taking one of the white marbles out of the bag, leaving you with one solitary, white marble.
c.
Chance of selecting two purple marbles:
<u />\frac{7purple}{9total} *  \frac{6purple}{8total}  \\  \frac{42}{72}  \\ =0.583
Chance of selecting two white marbles:
\frac{2white}{9total} * \frac{1white}{8total} \\ \frac{2}{72} \\ =0.278
<u>Chance of selecting two purple</u> vs. <em>Chance of Selecting 2 white:</em>
<u>0.583</u>><em>0.278</em>.
It is more likely to select 2 purple marbles.

Hope this helps!
6 0
3 years ago
Read 2 more answers
I need help and ty for helping
Ksivusya [100]
She can make 8

48/6=8
32/4=8
5 0
2 years ago
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