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3 years ago

3.6x+4.5y when x=3 and y=7

Mathematics

2 answers:

zzz [600]3 years ago

8 0

You plug in the x and y in the equation and that will give you 42.3

balu736 [363]3 years ago

4 0

Answer:

42.3

Explanation:

(3.6)(3) + (4.5)(7)

(3.6)(3) = 10.8

(4.5)(7) = 31.5

10.8 + 31.5 = 42.3

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Solve the equation on the interval 0 less than or equals theta less than 2 pi .0≤θ<2π. secant StartFraction 5 theta Over 4 En

qaws [65]

Answer: 4π/15, 4π/3 and 28π/15 (in radians)

Step-by-step explanation:

$sec 5\theta/4 =2$

Recall that $sec \theta = 1/cos \theta$

$1/cos (5\theta/4) =2$

$cos (5\theta/4) =1/2$

$Cos^{-1}$ $\frac{1}{2}$ = $5\theta/4$

This implies that

$\mp60+360n=5\theta/4$

$\theta=4/5(\mp60+360n)= \mp48+288n$

$When n=0, \theta=48$

$When n=1, \theta=240, 336$

Therefore the values of $\theta$ between 0 and 2π are 48, 240 and 336. (All in degrees)

48 degrees= 4π/15 rad

240 degrees =4π/3 rad

336 degrees = 28π/15 rad

5 0

3 years ago

According to the line of best fit, about how many times would the coin land heads up in 100 flips

UkoKoshka [18]

Probably 50. because there are two sides to the coin. 100/2=50.

7 0

3 years ago

Read 2 more answers

My brain do be dead. I'm trying to catch up in my math class before Christmas. Any help I can get would be SO APPREICTATED AAA

soldier1979 [14.2K]

Answer:

x=3

Step-by-step explanation:

for 17.

we have that x=8 as one solution

then we have

x-8=0

so we know that

$f(x)=(x-8)(something)$

$\frac{f(x)}{x-8}=something$

so we divide and get that

$something = x^{2} -6x+9x$

and we can factor it as

$(x-3)(x-3)$

so the other solutions are

x-3 =0

x = 3

this is a normal division

3 0

3 years ago

Read 2 more answers

I NEED HELP ASAP Which equation is equivalent to: −10r−6=115

Sever21 [200]

You answer is B

-10r=-115+6

3 0

4 years ago

Which account option is more convenient for frequent check or debit card withdrawals and purchases but gains no interest?

olya-2409 [2.1K]

The best account if one plans to make frequent withdrawals via check or debit card is A. Checking account

Checking accounts:

Are the least interest bearing accounts
Allow for frequent withdrawals using a check or debt card
Charge lower fees

Checking accounts are best when a person wants easy access to their money because they can get to it via checks or debit cards. The drawback however, is that interest on these accounts are low.

In conclusion, option A is correct.

Find out more about checking accounts at brainly.com/question/21714367.

7 0

3 years ago