3 years ago

Help me! Need answers to questions ii and iii please. Thanks x

1 answer:

6 0

Ii.First ,expand: 5(x-2)=32
5x-10=32
bring 10 to the other side (add it to 32)
5x=42
divide both sides by 5 to get x
x=42/5
x=8.4

iii.Expand 5+2(x+3)=21
5+2x+6=21
bring 5 and 6 to the other side
2x=21-5-6
2x=10 divide both sides by 2
x=5

You might be interested in

A ball is thrown into the air with an upward velocity of 36 ft/s. Its height h in feet after t seconds is given by the function

Nitella [24]

Step-by-step explanation:

We have,

A ball is thrown into the air with an upward velocity of 36 ft/s. Its height h in feet after t seconds is given by the function :

$h=-16t^2 + 36t + 10$ ......(1)

Part (a) :

The maximum height reached by the ball is given by :

$\dfrac{dh}{dt}=0\\\\\dfrac{d(-16t^2 + 36t + 10)}{dt}=0\\\\-32t+36=0\\\\t=\dfrac{36}{32}\\\\t=1.125\ s$

Part (b) :

The maximum height of the ball is calculated by putting t = 1.125 in equation (1) such that :

$h=-16(1.125)^2 + 36(1.125)+ 10\\\\h=30.25\ m$

7 0

4 years ago

iq scores are measured with a test designed so that the mean is 83 and the standard deviation is 20. consider the group iq score

dsp73

Oh my sorry didn’t know the answer

5 0

3 years ago

When outliers are removed how does the mean change?

Juliette [100K]

The answer to this question is the mean increases by 3.

6 0

3 years ago

Read 2 more answers

Johnathan can jog 3 2/5 miles in 7/8 hour. Find his average speed in miles per hour???

Allisa [31]

Your speed is 3.9 miles per hour

8 0

3 years ago

A tree farming company is testing how many items customers purchase during their visits. Based on many results, the (partial) pr

kkurt [141]

Answer:

X probability = 0.02

Cumulative frequency at x ( 6 ) = 1

Step-by-step explanation:

X P ( X ) Cf ( X )

1 0.58 0.58

2 0.18 0.58 + 0.18 = 0.76

3 0.10 0.76 + 0.10 = 0.86

4 0.07 0.86 + 0.07 = 0.93

5 0.05 0.93 + 0.05 = 0.98

6 0.02 0.98 + 0.02 = 1

4 0

3 years ago