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3 years ago

How do you know that 35×5=5×35 without finding products

Mathematics

2 answers:

Natali [406]3 years ago

8 0

Multiplication (like addition) has the same answer whatever the order. 2 X 3 = 6. 3 X 2 = 6.

Aleks [24]3 years ago

8 0

You know it because they are the same thing. 35x5 is something you can do both ways. You can check on a calculator. Do the question both ways and you will get the same product.

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Pamela’s age is three times jiri’s age the sum their ages is 40.what is jiri age

Lina20 [59]

Answer:

<h2>Jiri is 10 years old.</h2>

Step-by-step explanation:

$J-\text{Jiri's a}\text{ge}\\3J-\text{Pamela's a}\text{ge}\\40-\text{the sum their ages}\\\\\bold{EQUATION:}\\\\J+3J=40\\4J=40\qquad\text{divide both sides by 4}\\J=10$

5 0

3 years ago

The 555 points plotted below are on the graph of y=\log_b{x}y=log

adell [148]

Answer:

See attachment for graph

Step-by-step explanation:

<em>See comment for correct question</em>

Given

$y = \log_bx$

Required

The corresponding points on $y =b^x$

On the graph, we have:

$(x_1,y_1) \to (1,0)$

$(x_2,y_2) \to (2,1)$

$(x_3,y_3) \to (4,2)$

$(x_4,y_4) \to (8,3)$

$(x_5,y_5) \to (16,4)$

First, we solve for b in $y = \log_bx$

Using laws of logarithm, the equivalent of the above is:

$x = b^y$

$(x_2,y_2) \to (2,1)$ implies that:

$2 = b^1$

$2 = b$

Rewrite as:

$b =2$

So, the equation $y =b^x$ becomes:

$y = 2^x$

Using the same values of x, we have:

$(x_1,y_1) = (1,2)$

$(x_2,y_2) = (2,4)$

$(x_3,y_3) = (4,16)$

$(x_4,y_4) = (8,256)$

$(x_5,y_5) = (16,65536)$

<em>See attachment for graph</em>

7 0

3 years ago

A diagonal cross section of a sphere produces which two-dimensional shape?

inessss [21]

No matter which way the sphere is slice the answer is always a circle. If you cut a sphere in half and looked at one half, it would have a circular inside, CIRCULAR = CIRCLE. Have a great day.

6 0

3 years ago

Read 2 more answers

Find constants a and b so that the minimum for the parabola f(x)=x^2+ax+b is at the point (6,7)

Blizzard [7]

To find the minimum, take the derivative of the function and equate to zero:

f(x) = y = x² + ax + b
dy/dx = 2x + a = 0
Substitute x =6:
a = -2x
a = -2(6)
a = -12

Then, substitute x = 6, y = 7 and a = -12 to find b.

7 = (6)² -12(6) + b
7 + 36 = b
b = 43

Thus, a = -12 and b = 43

4 0

3 years ago

2 positive integers have hcf of 12 and their product as 6336 number of pairs possible for the number is

dezoksy [38]

Answer:

Here, we are given two positive numbers having HCF as 12 and their product as 6336. ... Hence, we get two pairs of numbers, (12 and 528) and (48 and 132). Therefore, the correct answer is option A.

5 0

3 years ago