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3 years ago

Subtract the sum of the expressions (4x2 – 6x + 3) and (-5x2 + 5x + 2) from the sum of (7x2 – 8x + 2) and (6x2 – 3x + 8)

Mathematics

1 answer:

snow_lady [41]3 years ago

3 0

Answer: [6x]

Step-by-step explanation:

(8 - 9x) = [1x]

(-10 + 7x) = [17x]

(14 - 16x) = [2x]

(12 - 24x) = [12x]

12x - 2x - 17x - 1x =

10x - 16x = [6x]

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Two factory plants are making TV panels. Yesterday, Plant A produced 7000 fewer panels than Plant B did. Four percent of the pan

amid [387]

Step-by-step explanation:

17000

Let the number of panels Plant B produced be x.

$7000(0.04)+0.02x=620 \\ \\ 0.02x=340 \\ \\ x=17000$

8 0

2 years ago

Cecilia has $780 in an account earning 5.2% simple interest. How much more interest would her account earn in 6 years with annua

Makovka662 [10]

Answer:

$1057.3

Step-by-step explanation:

First we'll find the Interest no. 1, which is simple interest, assuming the time 1 year:

S.I= PRT/100

S.I= 780*5.2*1/100

S.I=$40.56

Now we'll find interest no.2, which is compound interest, time is 6 years, Principal amount (780) will remain the same as well as the rate thus (putting in the formula of compound interest- annual- $A=P(1+\frac{R}{100} )^t$ ):

$A= 780(1+\frac{5.2}{100})^6$

A= $1057.3

7 0

3 years ago

Andrew ran 20 miles last week (at the same pace) and spent a total of 150 minutes running. If he runs for 240 minutes this week,

swat32

Andrew will run 32 miles.

Explanation:
If you divide the time Andrew ran by the miles he ran, you’ll get 7.5 minutes per mile. Then, if you divide 240 minutes by 7.5, you get 32 miles.

5 0

3 years ago

Read 2 more answers

Horizontal stadia sights. Determine the error in distance if the uppermost portion of a 3. 0m long stadia rod is inclined 14 cm

jek_recluse [69]

The error in the distance if the uppermost portion of a 3. 0m long stadia rod is inclined 14 cm toward the observer and the rod intercept is 1. 75m on a horizontal sight is 8.167cm.

<h3>What is Tangent (Tanθ)?</h3>

The tangent or tanθ in a right angle triangle is the ratio of its perpendicular to its base. it is given as,

Tan(θ) = Perpendicular/Base

where,

θ is the angle,

Perpendicular is the side of the triangle opposite to the angle θ,

The base is the adjacent smaller side of the angle θ.

Given the uppermost portion of a that is 3.0m long stadia rod is inclined 14 cm toward the observer, therefore, the angle of inclination, θ can be written as

tan(θ)=0.14/3

θ = 2.672°

Also, the rod intercept is 1.75m, therefore, t the error in distance in the distance is,

tanθ=x/1.75

x = 1.75 tan(θ)

x = 1.75 × tan(2.672°)

x = 0.08167 m = 8.167 cm

Hence, the error in the distance if the uppermost portion of a 3. 0m long stadia rod is inclined 14 cm toward the observer and the rod intercept is 1. 75m on a horizontal sight is 8.167cm.

Learn more about Tangent (Tanθ):

brainly.com/question/10623976

#SPJ4

6 0

2 years ago

Can somebody help with numbers 19-24

Gemiola [76]

19-20 idk but ik the others
21.)0.785
22.)0
23.)-14.5
24.)7.838

5 0

3 years ago