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3 years ago

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Mathematics

1 answer:

Arte-miy333 [17]3 years ago

8 0

Answer:

10 9/14

Step-by-step explanation:

(3 2/7) + (7 5/14) = (3 +7) + (2/7 + 5/14)

= 10 + (4/14 + 5/14)

= 10 9/14

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In triangle ABC,the measure of angle A is 78° and the measure of angle B is 35° What is the measure of angle C

Nookie1986 [14]

Answer:

č= 67°

Step-by-step explanation:

x + 78+35=180

x + 113=180

x= 180-113

x= 67 degrees

7 0

3 years ago

Find the measure of angle C of a triangle ABC, if: d m∠A = 60°+α, m∠B = 60°−α

snow_lady [41]

Answer:

m∠C = 60°

Step-by-step explanation:

we know that sum of angles of a traingle is 18 degrees.

given

m∠A = 60°+α,

m∠B = 60°−α

we have to find m∠C

m∠A + m∠B + m∠C = 180

60°+α + 60° - α +m∠C = 180

+α and -α gets cancelled

120°+m∠C = 180

=> m∠C = 180° - 120° = 60°

Thus, measure of angle c is 60°.

8 0

3 years ago

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alekssr [168]

Answer:

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6 0

3 years ago

Read 2 more answers

The area of a rectangular garden is given by the trinomial x2 + x – 42. What are the possible dimensions of the rectangle? Use f

Murrr4er [49]

Answer:

Step-by-step explanation:

Hello, please consider the following.

$x^2+x-42\\\\\text{The sum of the zeroes is -1=-7+6 and the product is -42=-7*6.}\\\\\text{So, we can factorise.}\\\\x^2+x-42\\\\=x^2+7x-6x-42\\\\=x(x+7)-6(x+7)\\\\=(x+7)(x-6)$

So, the possible dimensions of the rectangle are (x+7) and (x-6).

Thank you.

3 0

4 years ago

Read 2 more answers

If ( 43.65 ) ( 8.79 ) / x = ( 0.4365 ) ( 87.9 ) then value of x is:

strojnjashka [21]

Answer:

(d) 10

Step-by-step explanation:

Multiply by x and divide by its coefficient:

(43.65)(8.79) = (0.4365)(87.9)x

(43.65)(8.79)/((0.4365)(87.9)) = x

At this point, any calculator can give you the answer. It is, perhaps, more satisfying to work out the answer without a calculator.

x = (43.65)/(0.4365) × (8.79)/(87.9)

In the first quotient, the numerator is 100 times the denominator; in the second, the denominator is 10 times the numerator.

x = (100) × (1/10) = 100/10

x = 10

_____

Moving the decimal point to the right 1 place multiplies the numerical value by 10.

5 0

3 years ago