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mamaluj [8]
3 years ago
12

Help please 12 points :>

Mathematics
2 answers:
Volgvan3 years ago
4 0
2x+5-0.75x+2= 1.25x+7; Equivalent

x-7+.25x+14= 1.25x+7; Equivalent

x+.25+5+2= x+7.25; Not Equivalent

hope this helps! :)
daser333 [38]3 years ago
4 0
<h2>Answer:</h2>

1)x+.25+5+2=[x= - \frac{28}{5}]=[x=-5.6] EQUIVALENT

2)x-7+.25x+14=[x=-\frac{28}{5}]=[x=-5.6] EQUIVALENT

3)2x+5-0.75x=2=[x=-\frac{29}{4}]=[x=-7.25] IS NOT EQUIVALENT

1.25x+7=[x=-\frac{28}{5}]=[x=-5.6]

<h2>Answer: </h2><h3>1 and 2 are equivalent, 3 is not equivalent!</h3>
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The recursive rule for a sequence is a^n=a^(n-1)+7,where a^1=-15. What is the explicit rule for this sequence?
FinnZ [79.3K]

ANSWER

a_n=7n - 22

EXPLANATION

The recursive rule for the sequence is

a_n=a_{n-1}+7

In general the recursive rule is written as:

a_n=a_{n-1}+d

This implies that, d=7

The first term of the sequence is

a_1= - 15

The explicit rule is given by:

a_n=a_1 + d(n - 1)

We substitute to get;

a_n= - 15 +  7(n - 1)

a_n= - 15 +  7n - 7

a_n=7n - 22

7 0
3 years ago
the area of a right triangle is 336 square centimeters. The base of the right triangle is 48 centimeters. What is the length of
Alex73 [517]

Answer:

50 cm

Step-by-step explanation:

So the first step is to find the height, and to do that you know that the area of a triangle is height * base / 2 =  area. Plugging in the numbers you have, you get:

height*48/2=336

Then, this becomes

height * 24 = 336

Divide both sides by 24

height = 14

Now you can use the base and the height to find the hypotenuse using the Pythagorean Theorem: a^{2} +b^{2} =c^{2}

48^{2} +14^{2} =c^{2} \\2304 + 196 = c^{2}\\2500 = c^2\\50 = c\\c = 50

Therefore the length of the hypotenuse is 50 cm

8 0
3 years ago
Two-step equations with decimals and fractions<br><br> Solve for p.<br><br> −5(p+ 3/5 )=−4
GrogVix [38]

Answer:

1/5 or 0.2

Step-by-step explanation:

-5(p+3/5)=-4

Let's convert 3/5 to decimal form:

-5(p+0.6)=-4

Expand parentheses:

-5p-3=-4

Add -3 to both sides:

-5p=-1

Divide both sides by -5:

p=1/5 or 0.2

Hope this helps!

4 0
3 years ago
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Any one please need help
fiasKO [112]
The answer to the question is right
6 0
4 years ago
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