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2 years ago

Which one of the following is a true

Mathematics

1 answer:

Marina86 [1]2 years ago

4 0

Answer:

X5, m d5£t4#it8#k,osp5*9y6£, you_, I_, I &, I 5"I 5"6'7'6”7'6'6"6"I 5*95*95*59*I 5,5*5*I 5*I 5•5the area of a trapezium is 240 con 2 97 the parallel side is gucm and 26 cm long Feng

the distance between them.the area of a trapezium is 240 con 2 97 the parallel side is gucm and 26 cm long Feng

the distance between them.

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Is 5 a solution of the equation? 13 - d = 8

crimeas [40]

Yes because 13-5=8. not any other single number can be identified in the missing number

3 0

2 years ago

Read 2 more answers

I need help pls!!what type of acute triangle is this?? I have two math exams due at 3:30!!!!

poizon [28]

Answer:

scalene

Step-by-step explanation:

there are no sides that are equal in size nor angles that are equal is size

8 0

2 years ago

The base of an open rectangular box is of length (2x+5) cm and width x cm. The area of this base is 58cm^2. The height of the op

andreev551 [17]

B) $x =4.28$

C) volume = $135.25cm^3$ .

Step-by-step explanation:

Here we have , The base of an open rectangular box is of length (2x+5) cm and width x cm. The area of this base is 58cm^2. The height of the open box is (x-2) cm. We need to find the following :

a) show that 2x^2+5x-58=0

We know that area of rectangle = $length(width)$

⇒ $Area = length(width)$

Putting values according to question we get :

⇒ $58 = (2x+5)(x)$

⇒ $58 = (2x^2+5x)$

⇒ $2x^2+5x - 58 = 0$

b) solve the equation in the question above, giving your answer to 2 decimal places

Solving this equation :

⇒ $2x^2+5x - 58 = 0$

By quadratic formula

⇒ $x = \frac{-b \pm \sqrt{b^2-4ac} }{2a}$

⇒ $x = \frac{-5 \pm \sqrt{5^2-4(2)(-58)} }{2(2)}$

⇒ $x = \frac{-5 \pm 22.11}{4}$

⇒ $x = \frac{-5 + 22.11}{4} , x = \frac{-5 - 22.11}{4}$ { Since side can't be negative ! }

⇒ $x =4.28$

c) calculate the volume of the box, stating units of you answer

Since x = 4.28 , other sides are

$2x+5=2(4.28)+5=13.56\\x-2=4.28-2=2.28$

We know that volume is given by :

⇒ $length(width)(height)$

⇒ $13.86(4.28)(2.28)$

⇒ $135.25cm^3$

Therefore , volume = $135.25cm^3$ .

7 0

3 years ago

Find the value of the sine for

EleoNora [17]

Answer:

3/5

Step-by-step explanation:

Use Pythagorean to figure out that the is 100. Then do 60/100 and simplify

theoremhypotenuse

7 0

3 years ago

0.29x-0.25=0.43x+0.03

Tamiku [17]

Add both sides by 0.25:

$0.29x = 0.43x + 0.28$

Subtract both sides by 0.43x:

$-0.14x = 0.28$

Divide both sides by -0.14 to get x by itself:

$0.28 \div -0.14 = 2$

$x = -2$

The value of x is -2.

7 0

2 years ago