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2 years ago

Solve for x. assume that lines which appear to be tangent are tangent

Mathematics

1 answer:

Setler [38]2 years ago

7 0

Answer: 9

Step-by-step explanation:

2X+5=3X-4

-2X. -2X

5= X-4

9=X

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a dvd player remote control costs 266 a college student has 813 in her savings account how much will she have left in her saving

defon

Answer:

547

Step-by-step explanation:

Just subtract 813 - 266.

pls mark me as brainiest

5 0

2 years ago

A biker traveled 24 miles in 6 hours. A unit rate to describe this would be 4 miles per hour. What is another unit rate in this

padilas [110]

Answer:

(1/4) hr/mile

Step-by-step explanation:

4 mph can be rewritten using other units of measurement:

Suppose we convert 'miles' to 'feet:'

Then:

4 miles 5280 ft

---------- * ------------- = 21120 ft/hr

1 hr 1 mile

Note that we could invert 4 mph and obtain

1 hr

-------- or (1/4) hr/mile

4 mi

4 0

2 years ago

Read 2 more answers

Find a polynomial function of degree 3 with 2, i, -i as zeros.

sergiy2304 [10]

Answer:

$p(x)= x^3-2x^2+x-2$

Step-by-step explanation:

Here we are given that a polynomial has zeros as 2 , i and -i . We need to find out the cubic polynomial . In general we know that if $\alpha , \ \beta \ \& \ \gamma$ are the zeros of the cubic polynomial , then ,

$\sf \longrightarrow p(x)= (x -\alpha )(x-\beta)(x-\gamma)$

Here in place of the Greek letters , substitute 2,i and -i , we get ,

$\sf\longrightarrow p(x)= (x -2 )(x-i)(x+i)$

Now multiply (x-i) and (x+i ) using the identity (a+b)(a-b)=a² - b² , we have ,

$\sf \longrightarrow p(x)= (x-2)\{ x^2 - (i)^2\}$

Simplify using i = √-1 ,

$\sf \longrightarrow p(x)= (x-2)( x^2 + 1 )$

Multiply by distribution ,

$\sf \longrightarrow p(x)= x(x^2+1) -2(x^2+1)$

Simplify by opening the brackets ,

$\sf\longrightarrow p(x)= x^3+x-2x^2-2$

Rearrange ,

$\sf\longrightarrow \underline{\boxed{\blue{\sf p(x)= x^3-2x^2+x-2}}}$

4 0

2 years ago

Airplane descended 375 m in 10 seconds. What was the airplane’s rate of change in elevation (how many meters does the airplane d

34kurt

Answer:

37.5 m/s

Step-by-step explanation:

$\text{Rate of descent } = \dfrac{\text{descent}}{\text{time}} = \dfrac{\text{375 m}}{\text{10 s}}= \textbf{37.5 m/s}$

3 0

3 years ago

How do I find the closet length

Sophie [7]

Add the vertical distance between VU and the horizontal distance between UT and get the square root of what you added. That should be the answer.

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2 years ago