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KatRina [158]
3 years ago
12

Can someone help me with this question please

Mathematics
1 answer:
Dovator [93]3 years ago
4 0
The error is the proportions are set wrong
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Gavin drove 85 miles on 10 gallons of gas. How many miles can Gavin drive on 25 gallons of gas?
Setler79 [48]
212.5 miles because Gavin drives 85 miles on 10 gallons therefore 85/10=8.5 miles per gallon X 25 gallons=212.5
5 0
3 years ago
Write each fraction as a unit fraction<br> 12/84<br> 13/143<br> 23/138
alexandr1967 [171]
A unit fraction is a fraction whose numerator is 1.

\frac{12}{84}=\frac{12 \div 12}{84 \div 12}=\frac{1}{7} \\ \\&#10;\frac{13}{143}=\frac{13 \div 13}{143 \div 13}=\frac{1}{11} \\ \\&#10;\frac{23}{138}=\frac{23 \div 23}{138 \div 23}=\frac{1}{6}
7 0
3 years ago
Trina uses 8.6 pints of blue paint and white paint to paint her bedroom walls.
max2010maxim [7]
<h3>Trina uses 3.44 or \frac{ 17.2}{5} pints of white paint</h3>

<em><u>Solution:</u></em>

Given that,

Trina uses 8.6 pints of blue paint and white paint to paint her bedroom walls

3/5 of the amount is blue paint, and the rest is white paint

From given,

3/5 of 8.6 pints is blue paint

Remaining = 1 - \frac{3}{5}\\\\Remaining = \frac{2}{5}

Thus, 2/5 of 8.6 pints is white paint

<em><u>How many pints of white paint did she use to paint her bedroom walls? </u></em>

White\ paint = \frac{2}{5} \times 8.6\\\\White\ paint = \frac{17.2}{5}\\\\White\ paint = 3.44

Thus she uses 3.44 or 17.2/5 pints of white paint

5 0
3 years ago
Use the markings in the image to answer the following questions (drawing not to scale):
katrin [286]

First of all, we have to observe this triangles separated by the height. These small and big triangles are similar according to the Angle-Angle-Angle principle.


a. We can find all of these length using the cosine of the angle, Pythagoras theorem and the principle of the similarity of triangles.


b. According to the cosine of the angle we can write that, cosθ = 12/a = 5/13 and from here a = 31.2. After finding that using Pythagoras theorem, we can write that b=\sqrt{31.2^{2}-12^{2}} = 28.8. According to the similarity of the triangles, we can write that 31.2/d = 28.8/12 and d = 13. Applying Pythagoras theorem we find that c = 5.


c. We already gave the answer for this question in part b


8 0
3 years ago
Ian has 20 football cards, and Jason has 44 baseball cards. They agree to trade such that jason
Alina [70]

Answer:

12 trades

Step-by-step explanation:

Let's call 'x' the number of trades they will do.

After each trade, the number of cards Ian has increase by 1 (he gives 1 but receives 2), and the number of cards Jason has decrease by 1 (he receives 1 but gives 2), so after x trades, the number of cards Ian has is 20 + x, and Jason has 44 - x.

To find the number of trades when they will have the same amount of cards, we have that:

20 + x = 44 - x

2x = 24

x = 12 trades

8 0
3 years ago
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