All categories

3 years ago

Use mental math to solve 3x1,607

Mathematics

2 answers:

oksian1 [2.3K]3 years ago

6 0

Answer:

The product is 4,821

Step-by-step explanation:

We are given the following information in the question:

We have to multiply an expression using mental maths.

We can expand the numbers and use the distributive property to do so.

The distributive property lets you multiply a sum by multiplying each addend separately and then add the products.
It help us to perform complex multiplication problem easily.
$a\times(b+c) = (a\times b) + (a\times c)$

The solving is shown below:

$3\times (1607)\\=3\times (1000 + 600 + 7)\\=(3\times 1000) + (3\times 600) + (3\times 7)\\=3000 + 1800 + 21\\=4821$

The product is 4,821

Alja [10]3 years ago

5 0

Answer:

4821

Step-by-step explanation:

You might be interested in

BRAINLIESTTT ASAP! PLEASE HELP ME :)<br><br> please check answer..

SCORPION-xisa [38]

Answer:

B. False, they could be vertical angles

Step-by-step explanation:

Supplementary just mean when two angles form 180° (a straight line).

So ∠F and ∠G must form a straight line, and ∠G and ∠H must form a a straight line.

I drew the image out below and as you can see, angle F and H forms a vertical angle. A vertical angles is when two lines cross, the opposite angles from each others are called vertical angles.

6 0

3 years ago

If each of the following represents the slope of a line (or line segment), give the slope a line that is perpendicular to it. (a

Crank

Answer:

$m_2 = -\frac{3}{4}$ -- (a)

$m_2 = -\frac{7}{3}$ -- (b)

$m_2 = -\frac{1}{4}$ --- (c)

$m_2 = -3$ -- (d)

Step-by-step explanation:

Given

$a.\ m = \frac{4}{3}$

$b.\ m = \frac{3}{7}$

$c.\ m = 4$

$d.\ m = \frac{1}{3}$

Required

Determine the slope of a perpendicular line

In geometry, the condition for perpendicularity is:

$m_2 = -\frac{1}{m}$

This formula will be applied in solving these questions.

$a.\ m = \frac{4}{3}$

$m_2 = -\frac{1}{m}$

Substitute 4/3 for m

$m_2 = -\frac{1}{4/3}$

Express as a proper division

$m_2 = -1/ \frac{4}{3}$

Convert to *

$m_2 = -1* \frac{3}{4}$

$m_2 = -\frac{3}{4}$

$b.\ m = \frac{3}{7}$

$m_2 = -\frac{1}{m}$

Substitute 3/7 for m

$m_2 = -\frac{1}{3/7}$

Express as a proper division

$m_2 = -1/ \frac{3}{7}$

Convert to *

$m_2 = -1* \frac{7}{3}$

$m_2 = -\frac{7}{3}$

$c.\ m = 4$

$m_2 = -\frac{1}{m}$

Substitute 4 for m

$m_2 = -\frac{1}{4}$

$d.\ m = \frac{1}{3}$

$m_2 = -\frac{1}{m}$

Substitute 1/3 for m

$m_2 = -\frac{1}{1/3}$

Express as a proper division

$m_2 = -1/ \frac{1}{3}$

Convert to *

$m_2 = -1* \frac{3}{1}$

$m_2 = -\frac{3}{1}$

$m_2 = -3$

4 0

3 years ago

Please help me! it’s urgent

Verizon [17]

Answer: 85

Step-by-step explanation:

360degree for quad

thus

95+85+95 = 275

360-275 = 85

6 0

3 years ago

Read 2 more answers

What does this symbol mean

77julia77 [94]

Answer:

false contradiction

Step-by-step explanation:

The '⊥' symbol stand for false contradiction. The up tack or falsum ('⊥') is a constant symbol used to represent: The bottom element in lattice theory. ... A logical constant denoting "false" in logic.

5 0

3 years ago

Read 2 more answers

I'm not sure how to answer this question. Could someone please help explain it?

qaws [65]

Consider the parent function, $\displaystyle{ f(x)= \sqrt{x}$ .

The function f, takes a number x, and produces the square root of it, for example we have the points:

(1, 1), (4, 2), (25, 5), (100, 10).

The function $\displaystyle{ g(x)= \sqrt{x-5}$ , takes a value x, subtracts it 5, and then produces the square root of this difference.

So to produce the values 1, 2, 5, 10 given in the previous function, we need to

plug in the function not 1, 4, 25, and 100, but 6, 9, 30, 105.

Comparing : (1, 1), (4, 2), (25, 5), (100, 10) of (x, f(x)) with

(6, 1), (9, 2), (30, 5), (105, 10) of (x, g(x)),

we see that the graph of g is the same as the graph of f shifted 5 units right.

In general, the graph of y=f(x-a), where a is a positive number, is the graph of y=f(x) shifted a units right.

Answer: C

3 0

4 years ago