All categories

4 years ago

Can anyone help please

Mathematics

1 answer:

harina [27]4 years ago

6 0

The question mark is 5. 8-5=3 and 12-5=7

You might be interested in

Yvonne builds a scale model of the gateway arch in st. louis. the actual height of the gateway arch is 630 feet. the height of t

earnstyle [38]

1 inch = 7 ft
90/90 = 1 inch 630ft/90 = 7ft

3 0

3 years ago

Which of the following statements are always true for any two sets A and B?

Ivanshal [37]

Answer:

If A ⊆ B, then A ⊂ B.

If A = B, then A ⊆ B.

If A = B, then A ⊂ B.

Step-by-step explanation:

In set theory '⊂' is the symbol of proper subset and '⊆' is the symbol of subset of a set.

In option (a),

If A ⊆ B

⇒ A ⊂ B or A = B

Thus, If A ⊆ B, then A ⊂ B.

Option a is true.

(b) If A ⊂ B

⇒ A is the subset of B

That is, all elements of A are also the element of B,

But we can not say A = B

Thus, option b is not true.

(c) If A = B

⇒ A ⊂ B and A ⊃ B or A ⊆ B and B ⊆ A ( Because every set is the subset of itself )

⇒ A ⊆ B.

Option c is true.

(d) If A = B,

⇒ A ⊂ B

Option d is true.

(e) If A ⊂ B,

Then we can not say that,

A = B or A ≠ B

Thus, option e is not correct.

4 0

4 years ago

Read 2 more answers

What is 0.00000387 in scientific notation? A. 0.387 × 10–7 B. 3.87 × 10–6 C. 3.87 × 106 D. 387 × 10–8]

REY [17]

Answer:

Step-by-step explanation:

8 0

3 years ago

Find the point-slope equation for

iris [78.8K]

Answer: y+9=-2(x-9)

Step-by-step explanation:

The point-slope equation is $y-y_{1} =m(x-x_{1} )$ . All we have to do is fill in all the values except for y and x.

To find m, you use $\frac{y_{2}-y_{1} }{x_{2} -x_{1} }$ . Since we are given 2 points, we cna plug them in.

$\frac{13-(-9)}{-2-9} =\frac{22}{-11} =-2$ . Now that we have our slope m, we can fill in the point slope equation.

$y-(-9)=-2(x-9)$

$y+9=-2(x-9)$

4 0

4 years ago

the length of a rectangle is five feet less than its width. If the area of the rectangle is 84 square feet, find its dimensions

KIM [24]

Let
x---------> the length of the rectangle
y--------> the width of the rectangle

we know that
A=84 ft²
[area of rectangle]=x*y-----> 84=x*y-----> equation 1
x=y-5------> equation 2
substitute 2 in 1
84=[y-5]*y-----> 84=y²-5y---------> y²-5y-84=0

using a graph tool-----> to resolve the second order equation
see the attached figure

the solution is
y=12
x=y-5-----> x=12-5-----> x=7

the answer is
the length of the rectangle is 7 ft
the width of the rectangle is 12 ft

6 0

3 years ago