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OlgaM077 [116]
3 years ago
11

Jerry is customizing shirts for the debate team. He can choose from 4 colors and 5 fonts. How many different shirts is it possib

le for Jerry to customize?
Answer: _______ different shirts
Mathematics
1 answer:
AleksandrR [38]3 years ago
4 0

Answer:

20 different shirts

Step-by-step explanation:

Assuming that he can choose 1 color and 1 font for each shirt, there are 5*4 = 20 possible options.

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Without solving determine the number of real solutions for each quadratic equation
snow_lady [41]

Step-by-step explanation:

b^2-4b+3=0

b²-3x-b+3=0

b(b-3)-1(b-3)=0

(b-3)(b-1)=0

either

b=3 or b=1

.

2n^2 + 7 = -4n + 5

2n²+4n+7-5=0

2n²+4n+2=0

2(n²+2n+1)=0

(n+1)²=0/2

:.n=-1

.

x - 3x^2 = 5+ 2x - x^2

0=5+ 2x - x^2-x +3x^2

0=5+x+2x²

2x²+x+5=0

comparing above equation with ax²+bx +c we get

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b=1

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x={-b±√(b²-4ac)}/2a ={-1±√(1²-4×2×5)}/2×1

={-1±√-39}/2

8 0
2 years ago
Please solve the question and give correct answer with explanation so that i can understand it​
denis-greek [22]

Answer:

  • Yes

Step-by-step explanation:

Let the speed of the car is c and speed of the plane is p.

<h3>We are given:</h3>

The speed of the plane is 7 times the speed of the car

  • p = 7c

The distance traveled is

  • d = 315 km

The time difference to travel this same distance is 3 hours.

<h3>We know that:</h3>
  • d = ts, where d- distance, t- time, s - speed

Find the time for car and plane and their difference.

<h3>Car</h3>
  • t = d/s = 315/c
<h3 /><h3>Plane</h3>
  • t = d/s = 315/p = 315/(7c) = 35/c
<h3 /><h3>The difference</h3>
  • 315/c - 45/c = 3

<u>Solve it for c:</u>

  • (315 - 45)/c = 3
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  • c = 270/3
  • c = 90 km/h

Now find the speed of plane:

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As we see, Jenny is right

6 0
2 years ago
Cho tam giác ABC vuông tại C, biết : Góc A = 50 độ. Tính góc B
chubhunter [2.5K]

Answer:

Tổng 3 góc trong 1 tam giác là 180 độ

Vậy góc B = 180 - A - C = 180 - 90 - 50 = 40 độ

8 0
2 years ago
Read 2 more answers
This purse is roughly a trapezoid. The bottom base is 16 inches long. The top base is 10. It stands 13 inches tall. The latch is
balandron [24]
To find the amount of fabric for one side of the purse you will find the area of the trapezoidal space that is created.  The latch is on the top, so the 2 in is not necessary information.

A = 1/2 h(b1 + b2)
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A = 169 square inches of fabric will be needed.
3 0
2 years ago
in a survey of eight graders, 4/5 of the students preferred using pens over pencils. what percent of the students preferred?
Natali5045456 [20]

Answer:

80% (you divide 4 by 5 to get 0.8, then you move the decimal 2 spaces to the right

6 0
3 years ago
Read 2 more answers
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