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8_murik_8 [283]
3 years ago
14

Pipe A can fill 3 tanks in 8 minutes. Pipe B can fill 5 tanks in 10 minutes. How long will it take for them to fill a single tan

k if they work together?​
Mathematics
1 answer:
weqwewe [10]3 years ago
6 0

Answer:

8/7 min  = 1 \frac{1}{7}   minutes

Step-by-step explanation:

A rate 2 2/3 = 8/3 min per tank

B rate 2 min per tank

thus:

A rate = 3/8 tank per min

B rate = 1/2 tank per min

A+ B =  3/8 + 4/8 = 7/8 tank per min

7/8 x = 1

x = 8/7 min

 

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A change purse contains an equal number of pennies, nickels, and dimes. the total value of the coins is 512 cents. how many coin
sammy [17]

Let

x---------> the total number of coins

we know that

512 cents-------> is equal to $5.12

1 penny is equal to $0.01

1 nickel is equal to 5 penny--------> $0.05

1 dime is equal to 2 nickel--------> $0.10

\frac{x}{3}*0.01+ \frac{x}{3}*0.05+\frac{x}{3}*0.10=5.12

\frac{x}{3}*[0.01+0.05+0.1]=5.12 \\\\x*[0.16]=15.36 \\\\ x=\frac{15.36}{0.16} \\\\x= 96\ coins

the total number of coins are 96

Divide 96 by 3 to obtain the number of coins of each type

therefore

<u>the answer is</u>

the number of penny coins are 32

the number of nickel coins are 32

the number of dimes coins are 32


6 0
3 years ago
Anyone can help me out?​
ryzh [129]

Answer:

y=90

Step-by-step explanation:

y is a right angle, and all right angles are 90 degrees! Please mark brainliest and press the thanks button! :)

3 0
3 years ago
4,126 rounded to the nearest ten
valentinak56 [21]
4,126 rounded to the nearest ten would be 4,130.  Since 6 is closer to 10 than it is 0, the 2 gets rounded up to 6.

Hope this helps!
6 0
4 years ago
Read 2 more answers
Sam had $24.75 to spend on flowers for his mother. each rose cost $2.50 and each daisy cost $1.75. what are his options for the
diamong [38]
<span>The equation for the flowers Sam can purchase for his mother is 2.5x + 1.75y < 24.75. There are many acceptable answers for this, such as buying only 1 to 9 roses. If Sam wants to spend all of his $24.75 budget, he can get 5 roses and 7 daisies for a bouquet: 5*$2.50 = $12.50, 7*$1.75= $12.25, $12.50+$12.25 = $24.75</span>
3 0
3 years ago
Segment EG is an angle bisector of angle FGH. Noah wrote a proof to show that triangle HEG is congruent to triangle FEG. Noah's
tangare [24]

Answer:

Line 3 is incorrect; we don't know anything about the lengths of HG, FG, HE, and EF, so this line is not valid based on the given information.

Step-by-step explanation:

In the Noah's poof of the construction, segment EG would divide angle FGH into two equal parts, which makes line 2 to be valid. i.e <EGH ≅ <EGF. And it can also be observed that line 4 is a valid theorem in proving the congruent nature of triangles.

But line 3 is not valid because of the condition of the statement. Furthermore, segments FG, EG, HG, HE and FE may not be congruent. Thus, the condition of the statement in line 3 is incorrect.

8 0
3 years ago
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