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Nadya [2.5K]
3 years ago
5

∀ set A:(A⊆A)Select one:TrueFalse​

Mathematics
1 answer:
SashulF [63]3 years ago
4 0

Answer:

True

Step-by-step explanation:

You're claiming that every set is a subset of itself.

That's trivially true, because

A\subseteq A

requires that every element of A is also an element of A, which is tautologically true.

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Please help me with trigonometry
NeX [460]

Answer:

cos R = .38

Step-by-step explanation:

First you need to find the length of the hypotenuse.

Use a squared + b squared = c squared

100 + 576 = c squared

square root of 676 is 26

CosR is adjacent over hypotenuse.

Adjacent is 10

Hypotenuse is 26

10/26 = .38

3 0
3 years ago
A company produces and sells widgets and gizmos. In January the company sold 350 items for a total of $9,000. If each widget sol
iren [92.7K]

Answer:

The company sold 100 widgets and 250 gizmos.

Step-by-step explanation:

Let x_1 be the number of widgets sold and x_2 be the number of gizmos sold.

We are told that the company sold 350 items. We can represent this information in an equation as:

x_1+x_2=350...(1)

We have been given that a each widget sold for $35 and each gizmo sold for $22. The company sold 350 items for a total of $9,000.

We can represent this information in an equation as:

35x_1+22x_2=9,000...(2)

From equation (1), we will get:

x_2=350-x_1

Substitute this value in equation (2):

35x_1+22(350-x_1)=9,000

35x_1+7,700-22x_1=9,000

13x_1+7,700=9,000

13x_1+7,700-7,700=9,000-7,700

13x_1=1,300

\frac{13x_1}{13}=\frac{1,300}{13}

x_1=100

Therefore, the company sold 100 widgets.

Substitute x_1=100 in equation (1):

100+x_2=350

100-100+x_2=350-100

x_2=250

Therefore, the company sold 250 gizmos.

3 0
2 years ago
Read 2 more answers
What is 3 ÷ 2\5 pls answer dis<br>​
Anna35 [415]

Answer:

15/2

Step-by-step explanation:

when dividing by fractions, we "flip and multiply"-- therefore:

3 ÷ 2\5 = 3 x 5/2

3 x 5/2 = 15/2

7 0
2 years ago
Write the slope-intercept form of the equation of the line.<br> 5x - 2y = 2
FinnZ [79.3K]
The answer is y= 5/2x-1

6 0
3 years ago
Does anyone know this?
monitta
The answer should be 101.
8 0
2 years ago
Read 2 more answers
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