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3 years ago

7

Solve for y: 1.7-(3+2.4y) = 4(3y-2.91)

1 answer:

frez [133]3 years ago

6 0

1.7-3-2.4y= 12y-11.64

-1.3-2.4y = 12y - 11.64

-2.4y = 12y - 11.64

-14.4y = -10.34

y= 10.34/14.4= 5.17/7.20 or 517/720

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If the function graphed is f(x), find f(1).<br> A) -4 <br> B) -1/4<br><br> C) 0 <br> D) 4

Sergeeva-Olga [200]

Answer: choice A) -4

-----------------------------------------------

Step 1) Draw a vertical line through 1 on the x axis

Step 2) Mark the point where the vertical line and the blue curve intersect (or cross each other)

Step 3) Draw a horizontal line through the point marked in step 2. Note how this horizontal line goes through -4 on the y axis.

So the point (1,-4) is on the blue curve. This means if x = 1 is the input then y = -4 is the output. Recall that y = f(x). So f(x) = -4 is the output as well when the input is x = 1.

In short, this is why f(1) = -4

4 0

4 years ago

Jimmy is trying to escape Jane.... He runs 12 km/hr for 5 minutes, 17 km/hr for 8 minutes, and finally 6 km/hr for 2 minutes. Wh

Nana76 [90]

we are given

Jimmy is trying to escape Jane

For finding total distance , we will find distances and then add them

He runs 12 km/hr for 5 minutes

First distance:

speed =12 kh/hr

time=5 minutes

we can change into hour

$t=\frac{5}{60}hr$

$d_1=s*t$

now, we can plug values

$d_1=12*\frac{5}{60}$

$d_1=1$

second distance:

speed =17 kh/hr

time=8 minutes

we can change into hour

$t=\frac{8}{60}hr$

$d_2=s*t$

now, we can plug values

$d_2=17*\frac{8}{60}$

$d_2=2.26667$

third distance:

speed =6 kh/hr

time=2 minutes

we can change into hour

$t=\frac{2}{60}hr$

$d_2=s*t$

now, we can plug values

$d_3=6*\frac{2}{60}$

$d_3=0.2$

now, we can find total distance

$d=d_1+d_2+d_3$

$d=1+2.26667+0.2$

$d=3.46667$

so,

total distance is 3.46667 km...........Answer

7 0

3 years ago

Simplify square root of five times square root of eight.

kipiarov [429]

Answer:

1. two square root of ten

Step-by-step explanation:

Given expression is:

$\sqrt{5}* \sqrt{8}$

Simplifying the expression:

$\sqrt{5}* \sqrt{4 \ast 2}$

= $\sqrt{5}* \sqrt{4}*\sqrt{2}$

= $\sqrt{5}* 2*\sqrt{2}$

= $2 * \sqrt{5} * \sqrt{2}$

= $2 * \sqrt{10}$

So among the given options, option 1 is the correct one,namely, two square root of ten.

5 0

4 years ago

Read 2 more answers

AleksandrR [38]

Answer:

684 ft^2

Step-by-step explanation:

You can find the area of the middle rectangle by using:

$A=LW$

$A=18*20$

$A=360$

You can find the area of a triangle by using:

$A=\frac{BH}{2}$

Triangle 1: A=90

Triangle 2: A=72

2(72+90)+360

324+360

684

3 0

4 years ago

Write the equation: If 6 is subtracted from the product of 3 and a number, the result is 8 more than the number.

Bogdan [553]

<span>Write the equation
</span>
3n - 6 = n + 8

hope it helps

5 0

3 years ago

Read 2 more answers