All categories

3 years ago

5 (4z+6)-2(z-4)=2 (2w^2+7w-3)

Mathematics

1 answer:

love history [14]3 years ago

4 0

If you are solving for "z", the answer is
z=2w^2+7w/10 -2

You might be interested in

Fine line trucks rents an 18-ft truck for $42 plus 35 cents per mile. Judy needs a truck for one day to deliver a shipment of pl

r-ruslan [8.4K]

Set it up as an equation:
m=miles she can drive

42+.35m=70

Subtract the 42, so

.35m= 28
Divide by .35, so

m=80

She can drive 80 miles

8 0

2 years ago

Please help me with this question

aivan3 [116]

Step-by-step explanation:

the answer is

1) £30

2) £ 270

5 0

2 years ago

the expression 9a + 6s is the cost for a adults and s students to see a musical performance. Find the total cost for three adult

Arlecino [84]

A = # of adults = 3
s = # of students = 5

9(3) + 6(5) =
27 + 30 =
57

4 0

3 years ago

What are the maximum and minimum of the function f(x) = 0.9 I -(x - 5) I + 7 ? A. Maximum at (5,7) and minimum at (0,0) B. Minim

user100 [1]

Answer:

$Minimum = (5,7)$

No maximum

Step-by-step explanation:

Given

$f(x) = 0.9|-(x - 5)| + 7$

Solving (a): The minimum

The minimum is when the absolute parameter gives 0

i.e.

$0.9|-(x - 5)| =0$

Divide both sides by 0.9

$|-(x - 5)| =0$

Open bracket

$|-x + 5| =0$

Remove absolute sign

$-x + 5 =0$

Collect like terms

$x = 5$

Then the y value is:

$f(x) = 0.9|-(x - 5)| + 7$

Recall that: $0.9|-(x - 5)| =0$

So, we have:

$f(x) = 0 + 7$

$f(x) = 7$

Hence, the minimum is at: $(5,7)$

Since the minimum is at $(5,7)$ , then the graph will open upwards.

Hence. the function has no maximum; i.e.

$Maximum = (\infty,\infty)$

7 0

3 years ago

The circumference of a circle is 15n cm what is the area of the circle in terms of n

Mice21 [21]

Answer:

Area of circle is $\dfrac{225n^{2}}{4\pi} cm^{2}$

Step-by-step explanation:

Formula for circumference of circle is given as,

$C=2\pi r$

Given that C = 15 n cm,

Substituting the value,

$15n=2\pi r$

Solving above equation for r, divide both side by $2\pi$

$\dfrac{15n}{2\pi}=\dfrac{2\pi r}{2\pi}$

Simplifying,

$\dfrac{15n}{2\pi}=r$

Formula for area of circle is given as,

$A=\pi r^{2}$

Substituting the value of r,

$A=\pi \left(\dfrac{15n}{2\pi}\right)^{2}$

Squaring the parenthesis,

$A=\pi \left(\dfrac{225n^{2}}{4\pi^{2}}\right)$

Cancelling out the common term,

$A=\dfrac{225n^{2}}{4\pi}$

Therefore, area of circle in terms of n is $A=\dfrac{225n^{2}}{4\pi} cm^{2}$

5 0

3 years ago