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Stels [109]
3 years ago
10

Solve x^2 - (7 -1)x + (18 - i) =0

Mathematics
1 answer:
Mazyrski [523]3 years ago
6 0

Step-by-step explanation:

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WILL GIVE BRAINLIEST FOR BEST ANSWER I NEED THIS NOW! THANK YOU!
Neporo4naja [7]
What we know:
Football field is 100 yards in length
End zones are 10 yards each in length
Perimeter between pylons is 306 2/3 yards

What we need to find:
a. Perimeter and area of one end zone
b. Perimeter and area of without end zones
c. Perimeter and area of playing field with end zones

First we need to find the measurements of the field between pylons using the perimeter of 306 2/3 yards. We already know the length is 100 yards so we need to find width (w).

P=2l + 2w
306 2/3=2 (100) + 2w
306 2/3= 200 + 2w
300 2/3-200=200-200+2w
106 2/3=2w
106 2/3/2=2/2w
53 1/3=w

a. Perimeter=2 (10)+2 (53 1/3)=126 2/3 yards
Area=10×53 1/3=533 1/3 yd²
b. Perimeter=2 (100)+2 (53 1/3)=306 2/3 yards
Area=100×53 1/3=5333 1/3 yd²
c. Perimeter=2 (120) + 2 (53 1/3)=346 2/3 yards
Area=120×53 1/3=6400 yd²
6 0
3 years ago
What is six less than seven times a number is equal to -20​
Naya [18.7K]

Answer:

7n-6=-20

Step-by-step explanation:

six less than seven times a number

we'll use n as "the number"

six less meaning -6

7 times a number n = 7n

7n-6=-20

7 0
3 years ago
Help me with this pls
EastWind [94]

Answer:

the diameter is 6 units

Step-by-step explanation:

3×2=6

8 0
3 years ago
Read 2 more answers
Annika pays 2/25 of her weekly income into a retirement fund. If she pays £42 into the retirement fund, what is her weekly incom
skad [1K]

Answer:

Below.

Step-by-step explanation:

Let x be the Annika's weekly income.

2/25 of x  =  42

2x/25  =  42

x  =  42(25/2)

x  =  525

Her weekly income is $525.

6 0
2 years ago
Damarcus says the number 24/6 belongs only to the set of rational numbers. Explain the error
Lelu [443]
24/6 is 4 which is also a whole number and an integer
4 0
3 years ago
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