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Arte-miy333 [17]
3 years ago
14

You have $25 in your bank account. You make $7 per hour babysitting. How many hours must you babysit to have a total of $165 in

your account?
Mathematics
2 answers:
wlad13 [49]3 years ago
6 0
Let’s set up an equation:

You start with 25 dollars, you make 7 an hour:

7x + 25

Set this to 165:

7x + 25 = 165

Now subtract 25 from both sides:

7x = 140

Divide both sides by 7:

x = 20

So, you must babysit 20 hours.

Hope this helps!
telo118 [61]3 years ago
5 0
Make an equation:
25 + 7h = 165

h is the total number of hours you spend babysitting.

Solve for h to find how many hours you need to babysit to have a total of $165 in your bank account.

25 + 7h = 165
Subtract 25 from both sides.

7h = 140
Divide both sides by 7.

h = 20

You must spend 20 hours babysitting to have $165 in your bank account.
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Area of paralellogram with base 15cm and height12cm
azamat

Answer:

180 cm2

Area of a polyhedron:

15(=base)x12(=height)

=180cm2

btw parallelogram is a 2D pic how you can come out a ''base'' and ''height''? It should be called a polyhedron. Your question is weird.

If so, your ''area of parallelogram'' is 15cm2 since your question is hecking  weird.

Btw it's 15cm2 not 15

Please check ur question b4 u ask

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2 years ago
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From a point 50m from the base of the Skylon Tower in Niagara Falls, the angle of elevation to the top of
VladimirAG [237]

Answer:

The tower is about 235 m.

Step-by-step explanation:

Let x be the height of the tower

tan θ = opp / adj

tan 78 °= x / 50

x = 50 tan 78 °

x = 235

∴ The tower is about 235 m.

Hope this answer helps you :)

Have a great day

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8 0
3 years ago
What is the surface area of this right rectangular prism glass slab with dimensions of 20 inches by 3 inches by 12 inches?
Nata [24]
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6 0
3 years ago
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Let L be the line parametrized by x = 2 + 2t, y = 3t, z = −1 − t. (a) Find a linear equation for the plane that is perpendicular
Elden [556K]

Answer:

Step-by-step explanation:

Given that L is a line parametrized by

x = 2 + 2t, y = 3t, z = −1 − t

The plane perpendicular to the line will have normal as this line and hence direction ratios of normal would be coefficient of t in x,y,z

i.e. (2,3,-1)

So equation of the plane would be of the form

2x+3y-z =K

Use the fact that the plane passes through (2,0,-1) and hence this point will satisfy this equation.

2(2)+3(0)-(-1) =K\\K =5

So equation is

2x+3y-z =5

b) Substitute general point of L in the plane to find the intersecting point

2(2+2t)+3t-(-1-t) =5\\4+8t+1=5\\8t=0\\t=0\\(x,y,z) = (2,0,-1)

i.e. same point given.

3 0
3 years ago
What is the factored form of the expression 9x2 + 6x + 1?
DanielleElmas [232]

Answer:

(3x + 1)²

Step-by-step explanation:

Given

9x² + 6x + 1 ← is a perfect square of the form

(ax + b)² = a²x² + 2abx +  b²

Compare like terms to find a and b

a²x² = 9x² ⇒ a² = 9 ⇒ a = \sqrt{9} = 3

b² = 1 ⇒ b = \sqrt{1} = 1

and 2ab = 2 × 3 × 1 = 6

Thus

9x² + 6x + 1 = (3x + 1)²

4 0
3 years ago
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