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3 years ago

6

Subtract

x - (9 + 4x)" align="absmiddle" class="latex-formula">
thanks

1 answer:

KATRIN_1 [288]3 years ago

8 0

I suggest Photomath it works really well

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g100num [7]

5 7/12 because 2 1/3 + 3 1/4 = 67/12 (or 5 7/12) This can be shown as: 2 4/12 + 3 3/12 = 5 7/12

8 0

3 years ago

An automobile traveling at a rate of 30 ft/sec is approaching an intersection. When the automobile is 120 ft from the intersecti

pav-90 [236]

Answer:

14ft/sec

Step-by-step explanation:

GIVEN: An automobile traveling at a rate of 30 ft/sec is approaching an intersection. When the automobile is 120 ft from the intersection, a truck traveling at the rate of 40 ft/sec crosses the intersection.

IN SKETCH BELOW............. IN THE ATTACHMENT

A IS AUTOMOBILE AND V IS TRUCK AT TIME T= 0

TRUCK IS AT M AFTER T SECONDS...AUTOMOBILE IS AT L AFTER T SECS.

AT=120 '

After T seconds

AL= 30T

LV= 120-30T

VM= 40T

LM = $\sqrt{(120-30T)^2+40T^2}$ ( let this be s)

now , ds/dt = $\sqrt{\frac{2(-30)(120-30T)+3200T}{2\sqrt{(120-30T)^2+1600T^2} } }$

$\frac{ds}{dt} = \frac{2500T-3600}{\sqrt{(120-30T)^2+1600T^2} }$

now in this equation put T=2 we get

$\frac{5000-3600}{\sqrt{3600+6400} }$

ds/dt= 1400/100= 14 FPS

hence the two vehicles are separating at 14 ft/sec at T=2 seconds

7 0

3 years ago

Katie made a 1/2 gallon of lemonade. Each glass holds 1/2 a pint, how many glasses can she fill?

uranmaximum [27]

In one gallon, there are four quarts. Each quart holds two pints. Therefore, there are eight pints in a gallon. Because you are only talking about half a gallon, we only need half of eight pints, or four pints. If each glass holds half a pint, and there are four pints, she can fill eight glasses.

Hope this helped!! :))

8 0

4 years ago

Let f(x) = 2x + 5. Simplify: f^-1(f(4))<br><br> 1/13<br> -13<br> 13<br> 31<br> 4

GREYUIT [131]

F(x) = 2x + 5

x = 4

f(4) = 2(4) + 5
f(4) = 8 + 5
f(4) = 13

f^-1(f(4)) = 1 / 2(4) + 5 = 1 / 8 + 5 = 1/13

8 0

3 years ago

Pls i have 20 of these to do

Kobotan [32]

Answer:

1. 12

2. 27

3. 27

Step-by-step explanation:

I think these are correct

7 0

3 years ago