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3 years ago

I am stuck, please help

Mathematics

1 answer:

ASHA 777 [7]3 years ago

3 0

Answer:

2323

Step-by-step explanation:

Mental math means to find a way to do this problem in your head without using paper, pencil or a calculator.

The question says there are 23 classes and each class is to collect 101 items.

The equation would be 23 x 101.

To do this in your head real quick, make the numbers easier to multiply.

Make the 101 items 100. That means you are telling each class to collect 1 less item or 23 less items total.

You can do this in your head real quick. 23 classes collecting 100 items is 2300 items.

You had each class collect 100 items instead of 101. That mean you didn't collect 23 items. So if you add those back in, you will get

2323 items.

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PLeAsE i NeEd HeLp!!!!

olya-2409 [2.1K]

Answer:

DF = 10 units

$m\angle DFG = 28^\circ$

EG = 5.04

Step-by-step explanation:

Properties of Rhombus es

All Sides Of The Rhombus Are Equal.
The Opposite Sides Of A Rhombus Are Parallel.
Opposite Angles Of A Rhombus Are Equal.
In A Rhombus, Diagonals Bisect Each Other At Right Angles.
Diagonals Bisect The Angles Of A Rhombus.

The image contains a rhombus with the following data (assume the center as point O):

DO = 5 units

GF = 5.6 units

$m\angle FEO = 62^\circ$

4. Calculate DF

Applying property 4, diagonals bisect each other, thus the length of DF is double the length of DO, i.e. DF=2*5 = 10:

DF = 10 units

5. Calculate $m\angle DFG$

Applying property 4 in triangle EFO, the center angle is 90°, thus angle EFO has a measure of 90°-62°=28°.

Applying property 5, this angle is half of the measure of angle EFG and angle DFG has the same measure of 28°.

$m\angle DFG = 28^\circ$

6. FG is the hypotenuse of triangle OFG, thus:

$OG^2=FG^2-OF^2$

$OG^2=5.6^2-5^2$

$OG^2=6.36$

$OG=\sqrt{6.36}=2.52$

EG is double OG: OG=2*2.52=5.04

EG = 5.04

5 0

3 years ago

Let B be between A and C. If AB = 3x + 5, BC = 5x - 1, AC = 36, solve for x.

Elina [12.6K]

Answer:

The value of x is 4.

Step-by-step explanation:

Given:

Let B be between A and C.

$AB = 3x + 5$

$BC = 5x - 1$

$AC = 36$

To Find:

x=?

Solution:

B be between A and C as shown in Figure

A-B-C such that

$AC=AB+BC$ ...........Line Addition Property

Substituting the given values we get

$36=3x+5+5x-1=8x+4\\\\\therefore 8x=36-4=32\\\\\therefore x=\dfrac{32}{8}=4\\\\\therefore x=4$

The value of x is 4.

8 0

3 years ago

Indicate true or false as to weather the following equation is quadratic x(x^2+1)=0 true or false

beks73 [17]

$\bf x(x^2+1)=0\implies \stackrel{distributing}{x^3+x=0}\impliedby \textit{notice the }^3\textit{, is not quadratic, is \underline{cubic}}$

5 0

3 years ago

I’m struggling to answer this question on my test, can someone explain it to me?

Flauer [41]

Correct answer is Option A: 18/48 = 21/56

You’ll have to divide the numerator by the denominator of each fraction to see whether they have the same quotient:

18/48 = 0.375
21/56 = 0.375

The other options are not proportional.

B) 20/28 = 15/18:

20/28 = 0.714
15/18 = 0.833

Thus, 20/28 ≠ 15/18

C). 3/5 = 13/10
3/5 = 0.6
13/10 = 1.3

Hence, 3/5 ≠ 13/10

D) 7/10 = 10/7
7/10 = 0.7
10/7 = 1.43

Thus, 7/10 ≠ 10/7

These solutions prove that the correct answer is A) 18/48 = 21/56

Please mark my answers as the Briainliest if you find my explanations helpful :)

4 0

3 years ago

Does anyone know what 0.03 divided by 18 is and could you pls show the work?

Flauer [41]

The answer is 0.0016 or 0.0017

6 0

3 years ago