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3 years ago

Pls pls help!! there's 3 images. I WILL MARK YOU BRAINLIEST IF U GET IT RIGHT

Mathematics

1 answer:

Damm [24]3 years ago

6 0

Answer:

im not sure about the 1st one but sec one is 162 i think and im i dont know the last eaither srry

Step-by-step explanation:

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Unit 5. 4) Please help. Marcie purchases a helium tank that contains 7.9 cubic feet of helium. Marcie is making a balloon displa

4vir4ik [10]

Answer:

The correct answer is option c.

7 0

3 years ago

Which equation has the components of 0 = x2 – 9x – 20 inserted into the quadratic formula correctly?

Aneli [31]

Answer:

The required equation is $x=\frac{-(-9)\pm \sqrt{(-9)^2-4(1)(-20)}}{2(1)}$ .

Step-by-step explanation:

If a quadratic equation is $ax^2+bx+c=0$ , then the quadratic formula is

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

The given quadratic equation is

$x^2-9x-20=0$

Here, a=1, b=-9 and c=-20.

Substitute a=1, b=-9 and c=-20 in the above quadratic formula.

$x=\frac{-(-9)\pm \sqrt{(-9)^2-4(1)(-20)}}{2(1)}$

Therefore the required equation is $x=\frac{-(-9)\pm \sqrt{(-9)^2-4(1)(-20)}}{2(1)}$ .

6 0

3 years ago

Read 3 more answers

Write a decimal that the model represents

anastassius [24]

Answer:

<em>number = 0.011</em>

Step-by-step explanation:

<u>Decimal Representation</u>

The model is shown in the figure. It has a form of a cube where each face is divided into 10 equal squares, forming a 10x10x10=1,000 smaller cubes piece.

Out of that 1,000 cubes, only 11 are shaded. This leaves us to think the decimal represented by the model is the division between the shaded cubes by the total cubes, thus:

$number= \frac{11}{1,000}$

Dividing:

number = 0.011

4 0

3 years ago

The Perimeter of a triangle is 50 cm. One side is 7cm longer than the another side and 5 cm shorter than the third side. Find al

Aleksandr-060686 [28]

Imagine to have three segment: 1 is x, another is x+7 and the last is x-5. You know that their sum is 50, so you can write:

x+(x+7)+(x-5)=50
simplify:
3x+7-5=50
3x=48
x=16

16+7=23
16-5=11

So the thee sides are 11, 16 and 23.

Hope this helped.

6 0

3 years ago

What is 2 thirds divided by one half?

erastovalidia [21]

Its 2/3 divided in half.
It's 1/3 Im pretty sure

3 0

3 years ago