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3 years ago

6th grade ch.2 Find 0.45% of 20

Mathematics

2 answers:

MissTica3 years ago

6 0

Answer:

0.09

Step-by-step explanation:

if you are talking about simplifying the expression

Gemiola [76]3 years ago

5 0

Answer:

the answer is 9 hope this helped.

Step-by-step explanation:

45% × 20 =

(45 ÷ 100) × 20 =

(45 × 20) ÷ 100 =

900 ÷ 100 =9

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Each lap around the track is 400 meters. How many meters does someone run if they runs if Noah ran 14 laps, how many meters did

sashaice [31]

Question 1: You just do 400 x 14, and the answer is 5,600.
Question 2: You divide 7,600 by 400, and the answer is 19.

7 0

2 years ago

Read 2 more answers

Which expression represents the volume, in cubic

muminat

Given:

The composite figure.

To find:

The volume of the given composite figure.

Solution:

Given composite figure contains a cuboid and a pyramid.

Length, breadth and height of the cuboid are 8, 6 and 4 respectively.

Volume of a cuboid is

$V_1=length\times breadth\times height$

$V_1=(8)(6)(4)$

Length and breadth of the pyramid is same as the cuboid, i.e., 8 and 6 respectively.

Height of pyramid = 10 - 4 = 6

Volume of a pyramid is

$V_2=\dfrac{1}{3}\times length\times breadth\times height$

$V_2=(\dfrac{1}{3})(8)(6)(6)$

The volume of composite figure is

$V=V_1+V_2$

$V=(8)(6)(4)+(\dfrac{1}{3})(8)(6)(6)$

It can be written as

$V=(\dfrac{1}{3})(8)(6)(6)+(8)(6)(4)$

Therefore, the correct option is A.

3 0

3 years ago

What expression can be used for estimating 868÷29?

Lelu [443]

One expression u can use is 900÷30
Round 868 up to 900
and round 29 up is 30

4 0

3 years ago

I need help with this<br>

Nataly [62]

Answer:

y=3/4x +7

Step-by-step explanation:

The equation for slope-intercept is y=mx+b, where m is the slope and b is the intercept.

To find b, we can plug in the x,y, and given slope.

$4 = \frac{3}{4} ( - 4) + b \\ 4 = - 3 + b \\ b = 7$

so now we can write b and m in the original equation.

which gives us, y =3/4x +7

8 0

3 years ago

Verify the identity<br> <img src="https://tex.z-dn.net/?f=csc%5E%7B2%7Dx-csc%5E%7B2%7Dxcos%5E%7B2%7Dx%3D1" id="TexFormula1" titl

Degger [83]

Answer:

The answer to your question is below

Step-by-step explanation:

csc²x - csc²x cos²x = 1

Process

1.- Convert the second term to sines

csc²x - cos²x/sin²x = 1

2.- Convert cos²x/sin²x to cot²x

csc²x - cot²x = 1

3.- Solve for csc²x

csc²x = 1 + cot²x

We have verified it, because there is a Pythagorean identity which sets that

csc²x = 1 + cot²x

3 0

3 years ago