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m_a_m_a [10]
2 years ago
13

Help please !! Solve -1.6r+5= -7.8

Mathematics
2 answers:
Nikolay [14]2 years ago
5 0

subtract 5 from both sides. -1.6r=-5 divide both sides by-1.6. r=-5/-1.6 simp;ify-5/1.6 to 3.125. r =3.125

jonny [76]2 years ago
3 0

Answer: r=8

Step-by-step explanation: -1.6r+5=-7.8

-16/10r+5=-78/10

-2^4/2.5r+5= -2X3X13/5

-2^3/5r+5= - 3X13/5

(-8r)+25/5=-3X13/5

=8 so r=8

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Step-by-step explanation + Answer:

x = 1st job

y = 2nd job

x + y = 22......x = 22 - y

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154 - 7y + 8.25y = 171.50

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1.25y = 17.50

y = 17.50 / 1.25

y = 14 <== 14 hrs at the 8.25 per hr job

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x + 14 = 22

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5 0
1 year ago
Find the Prime Factorization of -165
Ghella [55]

Answer:

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Step-by-step explanation:

First off:  -165 separates into the factors (-1) and (165).  Next, we divide 165 by 15, obtaining 15(11).

So far, we have (-1)(11)(15).

15 is still factorable.  We get:

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6 0
3 years ago
Marla did 65 sit-ups each day for one week. Write an expression using the Distributive Property to find the total number of sit-
n200080 [17]
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3 0
3 years ago
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Taya2010 [7]

Answer: -11y - 35x

Step-by-step explanation:

This problem utilizes the Distributive Property of Multiplication.  It states that: a(x + y) = ax + ay.

Thus, utilizing this property (distributing -7), change the equation into:

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Hope it helps :) and let me know if you want me to elaborate.

8 0
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adoni [48]

Answer:

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Step-by-step explanation:

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6 0
2 years ago
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