3 years ago

Choose the two numbers from the box to complete

Mathematics

2 answers:

gogolik [260]3 years ago

8 0

Answer:

8 and 1

Step-by-step explanation:

8-1 =7

Furkat [3]3 years ago

8 0

Answer:8 and 1 have a difference of 7

Step-by-step explanation: 8 minus 1 equals 7

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In 28 years a man will be twice as old as he will be in 2 years. How old is he now?<br> +

andrew-mc [135]

Answer:

x+%2B+28+=+2x+%2B+4

x+=+28+-+4

x+=+24

He is 24 now

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

If the polynomials p(x)=2x³ +bx² +3x-5 and q(x)= x³+x² -4x-b leave the same remainder, when divided by x-2, prove that b = -13/5

Tju [1.3M]

Step-by-step explanation:

Lets first find the remainder when p(x) is divided by x-2

p(2)=2(2)³+b(2)²+3(2)-5

p(2)=16+4b+6-5

p(2)=4b+17

Now let's find the remainder when q(x) is divided by x-2

q(2)=(2)³+(2)²-4(2)-b

q(2)=8+4-8-b

q(2)=4-b

Now let's equate both of them

4b+17=4-b

4b+b=4-17

5b=-13

b=-13/5 as required

5 0

2 years ago

Which of the following figures has 90 rotation symmetry?

garik1379 [7]

It would be a rectangle

6 0

2 years ago

How far away is a star with a parallax of 2 arc sec in parsecs? In AU?

Vesna [10]

Answer:

ear

Step-by-step explanation:

8 0

2 years ago

Find the equation of the inverse.<img src="https://tex.z-dn.net/?f=y%20%3D%20%20%7B2%7D%5E%7Bx%20%2B%205%7D%20%20-%206" id="TexF

Contact [7]

Find the equation of the inverse.

$y = {2}^{x + 5} - 6$

we have

$y=\mleft\{2\mright\}^{\mleft\{x+5\mright\}}-6$

step 1

Exchange the variables

x for y and y for x

$x=\{2\}^{\{y+5\}}-6$

step 2

Isolate the variable y

$(x+6)=2^{(y+5)}$

apply log both sides

$\begin{gathered} \log (x+6)=(y+5)\cdot\log (2) \\ y+5=\frac{\log (x+6)}{\log (2)} \\ \\ y=\frac{\log(x+6)}{\log(2)}-5 \end{gathered}$

step 3

Let

$f^{(-1)}(x)=y$

therefore

the inverse function is

$f^{(-1)}(x)=\frac{\log(x+6)}{\log(2)}-5$

7 0

1 year ago