All categories

2 years ago

Can someone help me with this problem for a quiz tomorrow????

Mathematics

1 answer:

elena-14-01-66 [18.8K]2 years ago

4 0

Answer:

I hope it requires the picture I have drawn.

You might be interested in

Solve x2 − 7x = −13.

Ket [755]

Answer:

$\frac{7+\sqrt{-3} }{2} \\\\\frac{7-\sqrt{-3} }{2}$

Step-by-step explanation:

Step 1: Use the Quadratic formula to solve

$x^2 - 7x = -13$

$x^2 -7x+13 = -13 +13$

$x^2-7x+13=0\\$

$\frac{-b+\sqrt{b^2-4ac} }{2a} \\\frac{-b-\sqrt{b^2-4ac} }{2a}$

$\frac{-(-7)+\sqrt{(-7)^2-4(1)(13)} }{2(1)} \\\frac{-(-7)-\sqrt{(-7)^2-4(1)(13)} }{2(1)}$

$\frac{7+\sqrt{49-52} }{2} \\\\\frac{7-\sqrt{49-52} }{2}$

Answer: $\frac{7+\sqrt{-3} }{2} \\\\\frac{7-\sqrt{-3} }{2}$

6 0

2 years ago

24 Represent the real number rounded to three decimal places

puteri [66]

Answer:

you take the decimal which at this point it would be 24. and move it three places to the left so 0.024 would be the answer

3 0

2 years ago

Mathews usually makes the 100 km journey to visit his family. The trip involves three separate stages:

12345 [234]

Answer:

1 . Total time = 1 hr 55 minutes

2 Distance = 121 km

Step-by-step explanation:

Mattew journey

stage a

Distance = 20km

Speed = 30km/h

Time = distance/speed

Time = 20/30

Time = 2/3 h

Time = 40 minutes

Stage b

Distance = 50 I'm

Speed = 100 km/h

Time = distance/speed

Time = 50/100

Time = 0.5 h

Time = 30 minutes

Stage c

Distance = 30 km

Speed = 40 km/h

Time = distance/speed

Time = 30/40

Time = 3/4 h

Time = 45 minutes.

Total time taken =( 40 + 30 + 45 ) minutes

Total time = 115 minutes

Total time = 1 hr 55 minutes

Speed =60 km/h

Time= 6 minutes + x

And x = 1 hr 55 minutes

Time = 1 hr 55 minutes + 6 minutes

Time = 2 hr 1 minute

Time = 2.01666667 hr

Distance covered = speed * time

Distance = 60*2.016667

Distance = 121 km

3 0

3 years ago

1/3 ÷ 3/8 O 8/9 O 1 1/8 O 1/8

ZanzabumX [31]

Answer:

the answer is A. 8/9

Step-by-step explanation:

i did the math

4 0

2 years ago

Read 2 more answers

ILL MARK BRAINLIST IF ITS RIGHT.

erastovalidia [21]

Answer:

Step-by-step explanation:

The formula you should use is

b = 7 * h

You can try any value to see what happens

Let h = 3

b = 3*7

b = 21

3 0

2 years ago