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Nady [450]
3 years ago
8

How many gallons of a 60% antifreeze solution must be mixed with 70 gallons of 20% antifreeze to get a misture that is 50% antif

reeze? Use the she-step method
Mathematics
1 answer:
Komok [63]3 years ago
4 0

Answer:

<h2>210 gaL 60 % Antifreeze II</h2>

Step-by-step explanation:

In the problem, there are two types of antifreeze

antifreeze I and

antifreeze II

antifreeeze I 20 ----70 gal

Antifreeze II 60 ----- x gal

Total 50 ---------------- (70 + x ) gal

20*70+60*x=50(70+x)

1400+60x=3500+50x

60x-50x=3500-1400

10x=2100

x= 210

x=210 gaL 60 % Antifreeze II

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Look at the area model below. Write the amount<br> as an improper fraction and a mixed number.
Lera25 [3.4K]

Answer:

Step-by-step explanation:

Troy is landscaping his yard.

He spends a total of $500.

Troy spends $160 on bricks.

He spends the rest of the money on trees that cost $20 each.

Troy uses the equation 500 = 20t + 160 to find the number of trees, t, he can buy.

How many trees can Troy buy?

8

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5 0
3 years ago
Distribute to simplify <br><br> 1. 4(c-2) <br><br> 2. 8(x-1)​
hjlf

Answer:

1. 4c-8

2. 8x-8

Step-by-step explanation:

multiply the number on the outside of the brackets by the numbers on th inside

4*c=4c

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so 1. 4c-8

and for question 2:

8*x=8x

8*-1=-8

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2 years ago
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S_A_V [24]

Step-by-step explanation:

Given that,

The height of the cone, h = 24 cm

The radius of the cone, r = 10 cm

The slant height of the cone is :

l=\sqrt{h^2+r^2} \\\\l=\sqrt{24^2+10^2} \\\\l=26\ cm

The lateral area of the cone is given by :

A=\pi rl\\\\=3.14\times 10\times 26\\\\=816.4\ cm^2\approx 816\ cm^2

The surface area of the cone is given by :

A=2\pi rh\\\\=2\times 3.14\times 10\times 24\\\\=1507.2 \approx 1507\ cm^2

5 0
3 years ago
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For table # 1:

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x = 2*3.5 = 7

x = 3*3.5 = 10.5

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For table #2

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x =2 * 3 = 6

x = 3*3 = 9

x = 4* 3 = 12

Hence, the data sets show multiplicative relationships:

For data set 1 is 3.5 times x, and in data set 2 y is 3 times x.

8 0
1 year ago
fiona has to plot a histogram of the given data , what frequency table should she use for the histogram?
fomenos
Fiona is not very smart so should know herself what frequency table she should use for her histogram
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