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8_murik_8 [283]
3 years ago
15

-7.9.-1= -3.-5.-3= 4.8.-2=

Mathematics
2 answers:
madam [21]3 years ago
7 0
I’m going to assume the periods represent multiplication signs.
-7x9x-1= 63

-3x-5x-3= -45

4x8x-2= -64

hope this helps!
Nookie1986 [14]3 years ago
7 0
The answers

-7.9.-1= 63

-3.-5.-3= -45

4.8.-2=-64


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The value of n you plug into your equation will be 6. Then the correct option is C.

<h3>What is compound interest?</h3>

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When calculating a loan’s effective rate.

If the interest compounds every two months.

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2 years ago
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What is a congruence statement? PLEASE ANSWER HURRY
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Step-by-step explanation:

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6 0
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} A rectangle has an area of 25 square feet. A similar rectangle has an area of 200 square feet. What is ratio of the areas of t
ValentinkaMS [17]

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Find the value of "a" if you knew the perimeter was 47 meters long. Here is the experssion 7a-2
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8 0
3 years ago
Nancy and Mark commute to work, traveling in opposite directions. Nancy leaves the house at 7:00 A.M. And average 20 miles per h
vladimir2022 [97]

Answer:

They will be 170 miles apart at 10 AM

Step-by-step explanation:

Nancy has 15´ of  head start which is 1/4 hr.

NHD = 20*(1/4) = 5 miles is her head start

Mark leaves at 7.15hs = starting point

Marks stop at when they are 170 miles apart = t

------------------------------

t = the time they are 170 miles apart

d= distance in miles Nancy travels in time t

170 - (d+5) = distance in miles Mark travels in time t

------------------------------

Nancy's equation:

(1) d = 20t

Mark's equation:

(2) 170 - (d+5) = 40t

---------------------------

(2) 170-d-5=40t

(2) d+40t=165

Substitute (1) into (2)

(2) 20t+40t=165

(2) 60t=165

(2) t=2.75

7:15 AM + 2.75 hrs (2:45hs) = 10 AM

They are 170 miles apart at 10 AM

check:

(1) d=20t

(1) d=20*2.75

(1) d= 55

---------------

(2) 170 - (d+5) = 40t

(2) 170 - (d+5) = 40*2.75

(2) 170 - d-5 = 110

(2) d=55

4 0
3 years ago
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