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3 years ago

How many students chose tiktok? Please give explanation

Mathematics

1 answer:

Mashutka [201]3 years ago

3 0

35%
I know this because it is between 30 and 40%

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Lucas had 18 markers. He lent 1/6 of them to Isaac and 1/9 of them to Abby. In total, how many markers did he lend?

Sergeeva-Olga [200]

1/6 of 18 is 3
1/9 of 18 is 2
3+2= 5

He lent 5 markets in total

6 0

4 years ago

Please help me with this math question asap. I will mark brainliest. Thank you so much! Question 4/5

77julia77 [94]

Answer:

list the givens

line SU ≅line UT⇒def of a midpoint

ΔSVU≅ΔTWU⇒SSS

∠SVU≅∠TWU ⇒CPCTC

Step-by-step explanation:

3 0

3 years ago

Mai is filling her fish tank. Water flows into the tank at a constant rate. Complete the table and answer the question below.

kvasek [131]

Answer:

$r = 1.6$

Step-by-step explanation:

Given

x ----- y

0.5. --- 0.8

1. --- 1.6

3.--- 4.8

25. --- 40

Required

Determine the constant of proportionality

This can be calculated using the following formula:

$y = rx$ ; Where r is the constant of proportionality;

Solve for r

$r = \frac{y}{x}$

When x = 0.5; y = 0.8

$r = \frac{0.8}{0.5}$

$r = 1.6$

When x = 1; y =1.6

$r = \frac{1.6}{1}$

$r = 1.6$

When x = 3; y = 4.8

$r = \frac{4.8}{3}$

$r = 1.6$

When x = 25; y = 40

$r = \frac{40}{25}$

$r = 1.6$

Notice that the value of r is constant throughout;

Hence:

$r = 1.6$

5 0

3 years ago

If 12x=4(x+3) then x equals

Delvig [45]

3x=x+3 2x=3 x=3/2 Move x terms to one side, then solve

8 0

3 years ago

Read 2 more answers

Use f(x) = 1)2 and f^-1(x) = 2x to solve the problems. a) f(2) b)f^-1(1) c)f^-1(f(2))

Luden [163]

a) f (2) = 1

b) $f^{-1}(1)=2$

c) $f^{-1}(f(2))=2$

<u>Step-by-step explanation:</u>

$f^{-1}$ - Indicates that we have to find the inverse of the function

Given data:

$f(x)=\left(\frac{1}{2}\right) x$ --------> eq.1

$f^{-1}(x)=2 x$ ---------> eq.2

To find $f(2), f^{-1}(1), f^{-1}(f(2))$

Case a)

Now, substitute x = 2 in the equation 1 to find f (2)

$f(2)=\left(\frac{1}{2}\right) \times 2=1$

Case b)

Now, substitute x = 1 in the equation 2 to find $f^{-1}(1)$

$f^{-1}(1)=2(1)=2$

Case c)

In general,

$f^{-1}(f(x))=f\left(f^{-1}(x)\right)=x$

Thereby,

$f^{-1}(f(2))=2 \text { where } x=2$

5 0

3 years ago