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3 years ago

How can you use multiplication to check division ?

Mathematics

2 answers:

AnnyKZ [126]3 years ago

7 0

u use ur answer and u multiply it

Step-by-step explanation:

I know

kiruha [24]3 years ago

4 0

You use answer times the smallest number

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a factory makes parts for toys in different quantities,as shown in the table. how much would 11 part cost?

Paraphin [41]

Answer can you show use the graph then i would be able to answer it

5 0

3 years ago

What is the solution to the equation

Dafna11 [192]

$\sqrt{4t+5}=3-\sqrt{t+5}\\\\D:4t+5\geq0\ \wedge\ t+5\geq0\ \wedge\ \sqrt{t+5}\leq3\\\\t\geq-\dfrac{5}{4}\ \wedge\ t\geq-5\ \wedge\ t\leq6$

therefore
$D:x\in\left< -\dfrac{5}{4};\ 6\right>$

$\sqrt{4t+5}=3-\sqrt{t+5}\ \ \ |^2\\\\(\sqrt{4t+5})^2=(3-\sqrt{t+5})^2\ \ \ |use:(a-b)^2=a^2-2ab+b^2\\\\4t+5=3^2-2\cdot3\cdot\sqrt{t+5}+(\sqrt{t+5})^2\\\\4t+5=9-6\sqrt{t+5}+t+5\ \ \ \ |-t\\\\3t+5=14-6\sqrt{t+5}\ \ \ \ |-14\\\\3t-9=-6\sqrt{t+5}\ \ \ \ |change\ signs$
$9-3t=6\sqrt{t+5}\ \ \ \ |:3\\\\3-t=2\sqrt{t+5}\ \ \ \ |^2\\\\(3-t)^2=(2\sqrt{t+5})^2\\\\3^2-2\cdot3\cdot t+t^2=4(t+5)\\\\9-6t+t^2=4t+20\ \ \ |-4t-20\\\\t^2-10t-11=0\\\\t^2+t-11t-11=0\\\\t(t+1)-11(t+1)=0\\\\(t+1)(t-11)=0\iff t+1=0\ \vee\ t-11=0\\\\t=-1\in D\ \vee\ t=11\notin D$
Answer: t = -1.

7 0

3 years ago

Read 2 more answers

Help please and thank you

rjkz [21]

All you need to do is that Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

The sum of four multiples of 4 is 72. Find these numbers.

snow_tiger [21]

Answer:

x=5

Step-by-step explanation:

4(x+x+1+x+2)=72

3x+3=72/4

3x+3=18

3x=18-3

3x=15

x=15/3

x=5

7 0

3 years ago

Find the equation of the line shown

Mamont248 [21]

Answer:

y = x + 6

Step-by-step explanation:

3 0

3 years ago