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Katena32 [7]
3 years ago
5

Helppp me please i’m going to fail

Mathematics
1 answer:
Debora [2.8K]3 years ago
4 0
Multiple the top equation by 2 and rearrange so that -7 is equal to the others.
-10x+2y=-14
-3x-2y=-12
——————-
-13x=-26
Divide both by -13
x=2
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Complete the explanation of the error.
uysha [10]

Answer:

-2

Step-by-step explanation:

cause if you multiply a negative twice it becomes a positive

8 0
2 years ago
TV has a listed price of 623.98 if the sales tax rate is 8.5 find the total cost of the TV with the sales tax included​
Anastasy [175]

Answer:

$677.02

Step-by-step explanation:

623.98 increase 8.5% =

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4 0
3 years ago
A company sells cookies in 250-gram packs. When a particular batch of 1,000 packs was weighed, the mean weight per pack was 255
AURORKA [14]
Let X be a random variable representing the weight of a pack of cookies.
P(X < 250) = P(z < (250 - 255)/2.5) = P(z < -5/2.5) = P(z < -2) = 1 - P(z < 2) = 1 - 0.97725 = 0.02275 = 2.3%

Therefore, we conclude that about 2.3% of the packs weighed less than 250 grams.
7 0
2 years ago
What's the estimate of 1925 × 7​
Reil [10]

Answer:

13,500

Step-by-step explanation:

1925 x 7 = 13,475

13,475

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13,500

Hopefully this helps you :)

pls mark brainlest ;)

5 0
2 years ago
From measurements in a microscope, you determine that a certain bacterium covers an area of 1.50 μm2. Convert the area into squa
NemiM [27]
So the problem ask to find and convert the area into square meters. So to convert is you must do the cross multiplication process that could cancel out unit and made the answer into a square meter, so the answer would be 1. x10^-12m^2. I hope you are satisfied with my answer and feel free to ask for more 
4 0
2 years ago
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