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Anton [14]
3 years ago
5

How do you solve this? ASAP please help me. a^2+2.1^2=2.9

Mathematics
1 answer:
ss7ja [257]3 years ago
3 0
Convert decimal to fraction
a^2+(21/10)^2=2.9
Use exponent rules
a^2+441/100=2.9
Move constant to the right
a^2=2.9-441/100
Calculate
a^2=-151/100
This equation has no solution.
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to start to solve the system of equations below, which number would you multiply in the equation -2x-5y=-1? The two equations ar
Rashid [163]

Answer:

You would multiply the x component by -2

Step-by-step explanation:

(-2) (-2x-5y)=-2(-1)

4x+10y=2

4x+2y=8

set both equal to 4x

4x=2-10y

4x=8-2y

2-10y=8-2y

-6=8y

y=-6/8

y=-3/4

4x + 2(-3/4) = 8

4x=38/4

x=38/16

x=19/8


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3 years ago
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3 years ago
I don’t know how to answer this
oee [108]

Answer:

m∠1=66

m∠3=66

m∠4=114

Step-by-step explanation:

m∠1+m∠2=180

m∠1+114=180

m∠1=66

m∠1=m∠3

66=m∠3

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5 0
3 years ago
I need help with this
baherus [9]

Answer:

0.4

Step-by-step explanation:

drawing a triangle with each side correspondent to each of its measurements all you are doing is dividing the side that you would want to find its scale factor of, which in this case you would take AB and DE and have AB/DE dividing that and getting 0.4 as its scale factor.

6 0
3 years ago
What is the value of the unknown number in the verbal description five times the sum of 12 and a number is 80
sweet-ann [11.9K]
5 × (x + 12) = 80

5x + 60 = 80

5x = 20

x= 4
3 0
4 years ago
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