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3 years ago

9

Need help with Algerbra math

1 answer:

makkiz [27]3 years ago

4 0

Answer:

57.5

Step-by-step explanation:

divide 92 by 1.6. I hope this helps

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What is the slope of the line? 7x+2y=57x+2y=5

skad [1K]

Answer:

Step-by-step explanation:

6 0

3 years ago

If f(x) = 3x +9 x when f(x) = 30

den301095 [7]

Answer:

$x=5/2$

Step-by-step explanation:

When $f(x)=30$ , we have $3x+9x=30$ .

Combining like terms on the right side, we have $12x=30$ .

Finally, dividing by $12$ we get $x=30/12$ .

We note that $30=6*5$ and $12=6*2$ , so $30/12=5/2$ .

So, $\boxed{x=5/2}$ and we're done!

3 0

3 years ago

If a1=5 and an=nan-1-4 then find the value if a3

masya89 [10]

EXPLANATION

If a_1 = 5 and a_n = n*a_n-1 - 4 the value of a_3 is given by the following relationship:

$a_2=\text{ 2}\cdot5\text{ - 4 = 10-4=6}$ $a_3=2\cdot6-4=12-4=8$

The answer is 8

5 0

2 years ago

A bicyclist travels 32 kilometers for 2 hours and then and 13 kilometers for the next hour. Calculate the average speed.

GarryVolchara [31]

Answer:

15 km/h

Step-by-step explanation:

To find the speed, divide the total number of kilometers by the total number of hours:

Find the total number of hours:

32 + 13

= 45

Divide this by 3:

45/3

= 15

So, the average speed was 15 km/h

6 0

3 years ago

Algebra 1. Question 20. Thank you!

Genrish500 [490]

Look at the picture.

The formula of the area of a trapezoid is :

$A_T=\dfrac{base+base}{2}\cdot height$

We have:

$base=12m;\ base=5m;\ height=2\cdot3m=6m$

Substitute: $A_T=\dfrac{12+5}{2}\cdot6=17\cdot3=51\ m^2$

The formula of the area of a circle is :

$A_C=\pi r^2$

We have $r=3m$

Substitute: $A_C=\pi\cdot3^2=9\pi\ m^2$

The area of the shaded portion of trapezoid: $A=A_T-A_C$

Substitute: $A=(51-9\pi)\ m^2\approx(51-9\cdot3.14)\ m^2=22.74\ m^2$

7 0

4 years ago