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pychu [463]
2 years ago
12

A developer bought 78 trees at a total cost of $4050. The shade trees cost $45 each and the evergreens cost $60 each. How many o

f each type of tree were bought?
Mathematics
1 answer:
ANTONII [103]2 years ago
6 0

Answer:

Step-by-step explanation:

for 5 feet is $60

2 feet is $150.

sorry if this doesn't help!

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Solve for x. -5x + 13 = -17
Lana71 [14]

Subtract 13 from both sides

-5x = -17 - 13

Simplify -17 - 13 to -30

-5x = -30

Divide both sides by -5

x = -30/-5

Two negatives make a positive

x = 30/5

Simplify 30/5 to 6

<u>x = 6</u>

7 0
3 years ago
Read 2 more answers
Find the area of the surface the part of the plane y=x^2 y^2 cylinder x^2 z^2=16
Anestetic [448]

The area of the surface is 144.708

The equation of the given surface is,

z=g(x,y)=xy

Solving the partial derivatives,

∂g∂x=y,∂g∂y=x

Substituting to the formula

S=∬√1+( ∂g∂x)2+(∂g∂y)2dA

Thus,

S=∬√1+(y)2+(x)2dAS=∬√1+x2+y2dA

The region in the XY-plane is defined by the intervals  0≤θ≤2π,0≤r≤4

Converting the integral into polar coordinates,

S=∫2π0∫40√1+r2rdrdθ

Integrating with respect to r

S=∫2π0[13(1+r2)32]40dθ

S=∫2π0(17√173−13)dθ

Integrating with respect to θ

S=(17√173−13)[θ]2π0

S≈144.708

For more information about areas, visit

brainly.com/question/22972014

#SPJ4

8 0
2 years ago
How do you multiply mixed numbers with fractions?
Alex777 [14]

Answer:

First, you change each number to an improper fraction, simplify if possible. Then Multiply the numerators and then denominators, put your answer at lowest terms.

I really hope this helped.!

7 0
3 years ago
Express 0.0057 in scientific notation
andrew-mc [135]

Answer:

5.7 \times  {10}^{ - 3}

Step-by-step explanation:

0.0057

first number

5

then the rest

7

equal

5.7

There's <u>three</u> zeros <u>behind</u> the number 5 which mean it will be -3

\times  {10}^{ - 3}

final answer

5.7 \times {10}^{ - 3}

another example and it will be clear

0.0000403

first number

4

then the rest

03

equal

4.03

There's <u>five</u> zeros <u>behind</u> the number 4 which mean it will be -5

\times {10}^{ - 5}

final answer

4.03 \times {10}^{ - 5}

3 0
3 years ago
5th grade math. correct answer will be marked brainliest.
azamat

Answer:

3 1/3 is your answer.

Step-by-step explanation:

Rewriting equation:

4 + 5/6 - 1 - 1/2

4 - 1 = 3

5/6 - 1/2 = ?

Find the LCD of 5/6 and 1/2 and rewrite to solve.

5/6 - 3/6 = 2/6

2/6 = 1/3

3 + 1/3 = 3 1/3

Whole number: 3

numerator: 1

denominator: 3

7 0
3 years ago
Read 2 more answers
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