I need help with this answer can you plz help

Mathematics

1 answer:

Ivenika [448]3 years ago

8 0

The answer is 22. You add 90 degrees and 68 degrees together.

All triangles are 180 degrees so you’ll subtract 158 from 180.

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Thea and Eleanor are reading the same book. The graph shows the number of words Thea reads over time. Eleanor reads 225 words pe

Lapatulllka [165]

The slope is the rate
words per minute
we can do
540 words in 3 minutes
divide by 3
180 words in 1 minute

thea=180wpm
elanor=225wpm

elanor>thea

and 225*2=450

answers are
Thea reads 180 words per minute.

Eleanor reads 450 words every 2 minutes.

After 1 hour of reading, Eleanor reads more words than Thea.

6 0

3 years ago

Read 2 more answers

Average speed of Car 1 = 35 mph. Average speed of Car 2 = 55 mph. Time elapsed between start of Car 1 and start of Car 2 = 18 mi

gizmo_the_mogwai [7]

It is 0.53 hope this helps you.

7 0

3 years ago

Read 2 more answers

Glenn Andrews recently bought a new motorbike for $3,950. If he had to pay 6 percent sales tax on the bike, what was the total c

Lorico [155]

FIND TAX
=$3950 * 6%
=3950 * 0.06
=$237 tax

FIND TOTAL
add tax above to bike price
=$3950 + $237
=$4187 total

ANSWER: The cost of the motorbike with tax is $4187.

Hope this helps! :)

3 0

4 years ago

Need help with the steps for 15 and 17

Julli [10]

15. 2x+4y=5
Since you want to put it into y-intercept format (y=mx+b) first you want to minus 2x on both sides making it 4y= -2x+5, following you will divide by 4 on both sides making it y= -1/2x+ 5/4(1.25). The slope being -1/2x and the y-intercept hitting 1.25 on the y-axis.
17. 3x-3y=5. Like question 15 you will have to put it into y=mx+b format. So first you would minus 3x on both sides becoming -3y = -3x+5 then do the following: divide by -3 on both sides making the answer Y= x-5/3(-1.66666667) you can round it up to -1.67. Overall the answer should be y=x-1.67. 1.67 being the y-int meaning the line meets the y-axis at 1.67 and the slope being 1/1 to help you form the line.

6 0

3 years ago

X dy/dx +2y =x^2logx by using Bernoulli's Equation

inna [77]

This ODE isn't of Bernoulli type, but it is linear, so we should be able to find an integrating factor to solve it.

$x\dfrac{\mathrm dy}{\mathrm dx}+2y=x^2\log x\implies\dfrac{\mathrm dy}{\mathrm dx}+\dfrac2xy=x\log x$

The integrating factor will be

$\mu(x)=\exp\left(\displaystyle\int\frac2x\,\mathrm dx\right)=x^2$

Multiplying both sides of the ODE by the IF gives

$x^2\dfrac{\mathrm dy}{\mathrm dx}+2xy=x^3\log x$
$\dfrac{\mathrm d}{\mathrm dx}[x^2y]=x^3\log x$
$x^2y=\displaystyle\int x^3\log x\,\mathrm dx$

Integrate the right hand side by parts to get

$x^2y=\dfrac14x^4\log x-\dfrac1{16}x^4+C$
$y=\dfrac14x^2\log x-\dfrac1{16}x^2+\dfrac C{x^2}$

3 0

3 years ago