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krok68 [10]
1 year ago
14

Determine whether y = -2x² - 3 is a function.

Mathematics
1 answer:
Alexus [3.1K]1 year ago
5 0

Answer:yes

Step-by-step explanation:

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22 is what percentage of 55%
Liula [17]

Answer:

12.1

Step-by-step explanation:

3 0
3 years ago
Find the dimensions of an American football field. The length is 200 ft more than the width, and the perimeter is 1,040 ft. Find
natka813 [3]

Answer:

The width of the football field is 160 feet.

The length of the football field is 360 feet.

Step-by-step explanation:

Let w represent width of the football field.

We have been given that the length is 200 ft more than the width, so the length of the field would be w+200.

We are also told that the perimeter is 1,040 ft. We know that football field is in form of rectangle, so perimeter of field would be 1 times the sum of length and width. We can represent this information in an equation as:

2(w+w+200)=1040

Let us solve for w.

2(2w+200)=1040

4w+400=1040

4w+400-400=1040-400

4w=640

\frac{4w}{4}=\frac{640}{4}

w=160

Therefore, the width of the football field is 160 feet.

Upon substituting w=160 in expression w+200, we will get length of field as:

w+200\Rightarrow 160+200=360

Therefore, the length of the football field is 360 feet.

7 0
3 years ago
Mrs. Davis brought 16 pencils to her classroom
DENIUS [597]

Answer:

4

Step-by-step explanation:

16

10×2 = 20

20-16=4

6 0
3 years ago
Someone would help me find the angle measure y
dsp73

Answer:

y = 65°

Step-by-step explanation:

z = 70° (corresponding angels are equal)

y + z = 135° (exterior angle theorem of a triangle)

y + 70 = 135 (substitution)

Subtract 70 from each side

y + 70 - 70 = 135 - 70

y = 65

4 0
3 years ago
Identify the inequality that describes this graph​
enyata [817]

Answer:

B

Step-by-step explanation:

The direction of the greater than/equal to signs dictates which direction the graph is shaded.

6 0
3 years ago
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