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gtnhenbr [62]
3 years ago
15

Please help me with this problem

Mathematics
1 answer:
victus00 [196]3 years ago
5 0

Answer:

r= 8

Step-by-step explanation:

Devide both sides by -4

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Please help with this question
larisa [96]

Answer:

c=17 ft

Step-by-step explanation:

Base=b=8 ft

Hyp=c=?

Perp=a=15 ft

Applying Pythagoras theorem

c=\sqrt{a^{2} + b^{2} }

c=\sqrt{15^{2} + 8^{2} }

c=\sqrt{289 }\\c=17

4 0
3 years ago
What is equavilent to (10x+7r-r^(2))+(-6r^(2)-18+5r)
mote1985 [20]

Answer:

−7r^(2)+12r+10x−18

Step-by-step explanation:

Grab the original equation: 10x+7r−r^(2)−6r^(2)−18+5r

For subtraction bits, treat them as negatives: 10x+7r+−r^(2)+−6r^(2)+−18+5r

Combine like terms: (−r^2+−6r^2)+(7r+5r)+(10x)+(−18)

Simplify that, and you get your final answer: −7r^(2)+12r+10x+−18

6 0
3 years ago
God, somebody help me!!!
cestrela7 [59]

Answer:

Step-by-step explanation:

When solving proportions like these, you can set them up using fractions

#1:

\frac{3}{9} = \frac{2}{x}\\\frac{1}{3} = \frac{2}{x}\\cross \: multiply\\x = 6\\3:9 = 2:6

#2:

\frac{57}{x} = \frac{19}{38}\\\frac{57}{x} = \frac{1}{2}   \\x = 114\\57 : 114 = 19 : 38

#3:

\frac{7}{x} = \frac{2}{3}  \\21 = 2x\\x = \frac{21}{2} = 10.5\\7:10.5 = 2:3

#4

\frac{15}{2} = \frac{x}{8}\\x = \frac{15*8}{2} = 60\\15:2 = 60:8

#5

\frac{0.3}{4} = \frac{9}{x}\\0.3x = 36\\x = \frac{36}{0.3} = 120  \\0.3:4 = 9:120

5 0
3 years ago
Which of the following is an arithmetic sequence?
harkovskaia [24]
[ -6,1,8,15,22....] ithink it correct option
4 0
4 years ago
If a dozen eggs cost $3.50 now, they’ll cost how much in 25 years based on inflation
amm1812
Based on the average inflation rate of 3.22%, the new price of a dozen eggs after 25 years follows the equation: F = P(1+r)^t, where F = future value, P = present value, r = rate of inflation, and t = time in years
F = ($3.50)(1.0322)^25 = $7.73

8 0
3 years ago
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