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ki77a [65]
3 years ago
15

Solve the system of equations by substitution method

Mathematics
1 answer:
mina [271]3 years ago
6 0

( - 0.625, - 1.75 )

so since the first equation is already simplified , just replace it in the second equation

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3 0
3 years ago
What is the area of this trapezoid enter your answer in the box
larisa86 [58]

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Answer:

  336 cm^2

Step-by-step explanation:

The area of a trapezoid is given by the formula ...

  A = 1/2(b1 +b2)h

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4 0
3 years ago
What is the discriminant of the quadratic equation 0 = 2x2 3x – 5?
a_sh-v [17]
If you would like to find the discriminant of the quadratic equation 0 = 2x^2 + 3x - 5, you can do this using the following steps:

<span>0 = 2x^2 + 3x - 5
0 = ax^2 + bx + c
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The correct result would be 49.
5 0
3 years ago
Read 2 more answers
The coordinates of the vertices of a polygon are shown below. D(–4, 5), E(–1, 5), F(1, 2), and G(–1, –1) What type of polygon is
astraxan [27]

Step-by-step explanation:

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6 0
3 years ago
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serg [7]

The correct option is: (E) It is plausible that the percent of all people living in the region who regularly use sunscreen is 18.5%.

<u>Step-by-step explanation:</u>

The margin of error is a statistic expressing the amount of random sampling error that occurred due to miscalculation and survey results. The margin error is usually a small amount of error.

Generally 5% of margin of error is common and acceptable. When the percentage of the margin of error increases, the confidence in the report result will be reduced.

The recent survey reveals that 19% of the people living in a certain region regularly use sunscreen when going outdoors. The permissible margin of error in this survey is 1%.

Probably the percentage of people using sunscreen in the particular region will be <u>18.5%. </u>

5 0
3 years ago
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