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denis23 [38]
3 years ago
12

Kate has a coin collection. She keeps 7 of the coins in a box witch is only 5%of her entire collection. What is the total number

of coins in Kate's coin collection
Mathematics
2 answers:
yarga [219]3 years ago
8 0

Answer:

140 coins total

Step-by-step explanation:

Straightforward, this reads "7 is 5% of how many?".  Algebraically, the word "is" means an equals sign, and the word "of" means you multiply.  Of course, the 5% needs to be in decimal form.  Taking the sentence above, algebraically it is:  7 = .05x.  Divide by .05 on both sides to get x = 140

elena-14-01-66 [18.8K]3 years ago
6 0

Answer:140

Step-by-step explanation:

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Traveling from San Antonio to Dallas, you fist pass through Austin and then Waco before reading Dallas, a total distance of 280
pshichka [43]
The answer is 70 miles.

If we express distances as following:
T - total distance
a - distance from <span>San Antonio to Austin
b - </span>distance from <span>Austin to Waco
c - </span>distance from <span>Waco to Dallas
Then:
T = 280 mi
b = a - 30 mi        </span>⇒ a = b + 30<span>
b = c + 20 mi       </span>⇒ c = b - 20<span>

T = a + b + c
</span>⇒ a + b + c = 280
⇒ b + 30 + b + b - 20 = 280
⇒ 3b +10 = 280
⇒ 3b = 280 - 10
⇒ 3b = 270
⇒ b = 90 mi.

Distance from <span>Waco to Dallas is c.
</span><span>c = b - 20
</span>⇒ c = 90 - 20
⇒ c = 70 mi

Therefore, distance from <span>Waco to Dallas is 70 miles.</span>
8 0
3 years ago
for every 5 coins Carmen gets, she gives her brother Frankis 2 coins. If Carmen gets 9 coins, how many do her brother have?
Ira Lisetskai [31]

Answer:

6 coins

Step-by-step explanation:

For every 5 coins Carmen recieves, she gives off 2 to her brother, leaving her with 3 coins, 3x3=9, 2x3=6

3 0
3 years ago
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What is the axis of symmetry for f(x)=5(x+7)(x-5)
Harman [31]
<span>What is the axis of symmetry for f(x)=5(x+7)(x-5)?  Multiply out this polynomial to obtain the equation of a parabola in the form y = ax^2 + bx + c.

f(x) = 5(x^2 - 5x + 7x -35)

Holding the coefficient 5, we have 1x^2 - 2x - 35.  Here a = 1 and b = -2, and
thus x = -b / (2a) provides the x-coord. of the axis of symm.  It is:

x = -(-2) / (2*1) = 1.

The axis of symmetry is the vertical line x = 1.</span>
8 0
4 years ago
(i) 809, 708, 607, _____, _ class 4<br>__class 4​
schepotkina [342]

Answer:

809, 708, 607, 506, 405, 304, 203, 102, 1, -100

Step-by-step explanation:

809, 708, 607, _____, _______

First term = 809

Second term = 708

Third term = 607

Difference between first term and second term = 809 - 708

= 101

Difference between second term and third term = 708 - 607

= 101

Therefore, the common difference is 101

Fourth term = 607 - 101

= 506

Fifth term = 506 - 101

= 405

Sixth term = 405 - 101

= 304

Seventh term = 304 - 101

= 203

Eighth term = 203 - 101

= 102

Ninth term = 102 - 101

= 1

Tenth term = 1 - 101

= - 100

809, 708, 607, 506, 405, 304, 203, 102, 1, -100

4 0
3 years ago
Please help, thank you so much! I'll give brainliest to the correct answer!
ratelena [41]

Answer:

2

Step-by-step explanation:

This is because the other ones were going to be spent on something else, but then they were spent on magazines or flowers.

5 0
3 years ago
Read 2 more answers
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